Update CHANGES and configure.ac for 1.9a release

Balazs Kezes.

.gitignore

@@ -0,0 +1,19 @@
+*.o
+*~
+*.diff
+*.patch
+*.core
+core
+tags
+.deps/
+compat/.dirstamp
+aclocal.m4
+autom4te.cache/
+config.log
+config.status
+etc/
+tmux
+Makefile
+Makefile.in
+configure
+tmux.1.*

.mailmap

@@ -0,0 +1,24 @@
+Bob Beck 		<beck@openbsd.org> beck <beck>
+Igor Sobrado 		<sobrado@openbsd.org> sobrado <sobrado>
+Jacek Masiulaniec 	<jacekm@openbsd.org> jacekm <jacekm>
+Jason McIntyre 		<jmc@openbsd.org> jcm <jcm>
+Joel Sing		<jsing@openbsd.org> jsing <jsing>
+Marc Espie 		<espie@openbsd.org> espie <espie>
+Matthew Dempsky 	<matthew@openbsd.org> matthew <matthew>
+Matthias Kilian 	<kili@openbsd.org> kili <kili>
+Matthieu Herrb 		<matthieu@openbsd.org> matthieu <matthieu>
+Miod Vallat 		<miod@openbsd.org> miod <miod>
+Nicholas Marriott 	<nicm@openbsd.org> nicm <nicm>
+Nicholas Marriott 	<nicm@openbsd.org> no_author <no_author@example.org>
+<nicm@openbsd.org>	<nicholas.marriott@gmail.com>
+Okan Demirmen 		<okan@openbsd.org> okan <okan>
+Philip Guenther		<guenther@openbsd.org> guenther <guenther>
+Pierre-Yves Ritschard 	<pyr@openbsd.org> pyr <pyr>
+Ray Lai 		<ray@openbsd.org> ray <ray>
+Ryan McBride		<mcbride@openbsd.org> mcbride <mcbride>
+Stefan Sperling 	<stsp@openbsd.org> stsp <stsp>
+Stuart Henderson 	<sthen@openbsd.org> sthen <sthen>
+Ted Unangst 		<tedu@openbsd.org> tedu <tedu>
+Theo Deraadt 		<deraadt@openbsd.org> deraadt <deraadt>
+Thomas Adam		<thomas@xteddy.org> Thomas <thomas@xteddy.org>
+William Yodlowsky 	<william@openbsd.org> william <william>

CHANGES

@@ -1,3 +1,180 @@
+CHANGES FROM 1.9 to 1.9a 22 February 2014
+
+NOTE:  This is a bug-fix release to address some important bugs which just
+missed the 1.9 deadline, but were found afterwards.
+
+Normal Changes
+==============
+
+* Fix crash due to uninitialized lastwp member of layout_cell
+* Fix -fg/-bg/-style with 256 colour terminals.  
+
+CHANGES FROM 1.8 to 1.9, 20 February 2014
+
+NOTE:  This release has bumped the tmux protocol version.  It is therefore
+advised that the prior tmux server is restarted when this version of tmux is
+installed, to avoid protocol mismatch errors for newer clients trying to
+talk to an older running tmux server.
+
+Incompatible Changes
+====================
+
+* 88 colour support has been removed.
+* 'default-path' has been removed.  The new-window command accepts '-c' to
+  cater for this.  The previous value of "." can be replaced with: 'neww -c
+  $PWD', the previous value of '' which meant current path of the pane can
+  be specified as:  'neww -c "#{pane_current_path}"'
+
+Deprecated Changes
+==================
+
+* The single format specifiers:  #A -> #Z (where defined) have been
+  deprecated and replaced with longer-named equivalents, as listed in the
+  FORMATS section of the tmux manpage.
+* The various foo-{fg,bg,attr} commands have been deprecated and replaced
+  with equivalent foo-style option instead.  Currently this is still
+  backwards-compatible, but will be removed over time.
+
+Normal Changes
+==============
+
+* A new environment variable TMUX_TMPDIR is now honoured, allowing the
+  socket directory to be set outside of TMPDIR (/tmp/ if not set).
+* If -s not given to swap-pane the current pane is assumed.
+* A #{pane_syncronized} format specifier has been added to be a conditional
+  format if a pane is in a syncronised mode (c.f. syncronize-panes)
+* Tmux now runs under Cygwin natively.
+* Formats can now be nested within each other and expanded accordingly.
+* Added 'automatic-rename-format' option to allow the automatic rename
+  mechanism to use something other than the default of
+  #{pane_current_command}.
+* new-session learnt '-c' to specify the starting directory for that session
+  and all subsequent windows therein.
+* The session name is now shown in the message printed to the terminal when
+  a session is detached.
+* Lots more format specifiers have been added.
+* Server race conditions have been fixed; in particular commands are not run
+  until after the configuration file is read completely.
+* Case insensitive searching in tmux's copy-mode is now possible.
+* attach-session and switch-client learnt the '-t' option to accept a window
+  and/or a pane to use.
+* Copy-mode is only exited if no selection is in progress.
+* Paste key in copy-mode is now possible to enter text from the clipboard.
+* status-interval set to '0' now works as intended.
+* tmux now supports 256 colours running under fbterm.
+* Many bug fixes!
+
+CHANGES FROM 1.7 to 1.8, 26 March 2013
+
+Incompatible Changes
+====================
+
+* layout redo/undo has been removed.
+
+Normal Changes
+==============
+
+* Add halfpage up/down bindings to copy mode.
+* Session choosing fixed to work with unattached sessions.
+* New window options window-status-last-{attr,bg,fg} to denote the last
+  window which was active.
+* Scrolling in copy-mode now scrolls the region without moving the mouse
+  cursor.
+* run-shell learnt '-t' to specify the pane to use when displaying output.
+* Support for middle-click pasting.
+* choose-tree learns '-u' to start uncollapsed.
+* select-window learnt '-T' to toggle to the last window if it's already
+  current.
+* New session option 'assume-paste-time' for pasting text versus key-binding
+  actions.
+* choose-* commands now work outside of an attached client.
+* Aliases are now shown for list-commands command.
+* Status learns about formats.
+* Free-form options can be set with set-option if prepended with an '@'
+  sign.
+* capture-pane learnt '-p' to send to stdout, and '-e' for capturing escape
+  sequences, and '-a' to capture the alternate screen, and '-P' to dump
+  pending output.
+* Many new formats added (client_session, client_last_session, etc.)
+* Control mode, which is a way for a client to send tmux commands.
+  Currently more useful to users of iterm2.
+* resize-pane learnt '-x' and '-y' for absolute pane sizing.
+* Config file loading now reports errors from all files which are loaded via
+  the 'source-file' command.
+* 'copy-pipe' mode command to copy selection and pipe the selection to a
+  command.
+* Panes can now emit focus notifications for certain applications
+  which use those.
+* run-shell and if-shell now accept formats.
+* resize-pane learnt '-Z' for zooming a pane temporarily.
+* new-session learnt '-A' to make it behave like attach-session.
+* set-option learnt '-o' to prevent setting an option which is already set.
+* capture-pane and show-options learns '-q' to silence errors.
+* New command 'wait-for' which blocks a client until woken up again.
+* Resizing panes will now reflow the text inside them.
+* Lots and lots of bug fixes, fixing memory-leaks, etc.
+* Various manpage improvements.
+
+CHANGES FROM 1.6 to 1.7, 13 October 2012
+
+* tmux configuration files now support line-continuation with a "\" at the
+  end of a line.
+* New option status-position to move the status line to the top or bottom of
+  the screen.
+* Enforce history-limit option when clearing the screen.
+* Give each window a unique id, like panes but prefixed with @.
+* Add pane id to each pane in layout description (while still accepting
+  the old form).
+* Provide defined ways to set the various default-path possibilities: ~
+  for home directory, . for server start directory, - for session start
+  directory and empty for the pane's working directory (the default). All
+  can also be used as part of a relative path (eg -/foo). Also provide -c
+  flags to neww and splitw to override default-path setting.
+* Add -l flag to send-keys to send input literally (without translating
+  key names).
+* Allow a single option to be specified to show-options to show just that
+  option.
+* New command "move-pane" (like join-pane but allows the same window).
+* join-pane and move-pane commands learn "-b" option to place the pane to
+  the left or above.
+* Support for bracketed-paste mode.
+* Allow send-keys command to accept hex values.
+* Add locking around "start-server" to avoid race-conditions.
+* break-pane learns -P/-F arguments for display formatting.
+* set-option learns "-q" to make it quiet, and not print out anything.
+* copy mode learns "wrap-search" option.
+* Add a simple form of output rate limiting by counting the number of
+  certain C0 sequences (linefeeds, backspaces, carriage returns) and if it
+  exceeds a threshold (current default 250/millisecond), start to redraw
+  the pane every 100 milliseconds instead of making each change as it
+  comes. Two configuration options - c0-change-trigger and
+  c0-change-interval.
+* find-window learns new flags:  "-C", "-N", "-T" to match against either or
+  all of a window's content, name, or title.  Defaults to all three options
+  if none specified.
+* find-window automatically selects the appropriate pane for the found
+  matches.
+* show-environment can now accept one option to show that environment value.
+* Exit mouse mode when end-of-screen reached when scrolling with the mouse
+  wheel.
+* select-layout learns -u and -U for layout history stacks.
+* kill-window, detach-client, kill-session all  learn "-a" option for
+  killing all but the current thing specified.
+* move-window learns "-r" option to renumber window sequentially in a
+  session.
+* New session option "renumber-windows" to automatically renumber windows in
+  a session when a window is closed.  (see "move-window -r").
+* Only enter copy-mode on scroll up.
+* choose-* and list-* commands all use "-F" for format specifiers.
+* When spawning external commands, the value from the "default-shell" option
+  is now used, rather than assuming /bin/sh.
+* New choose-tree command to render window/sessions as a tree for selection.
+* display-message learns new format options.
+* For linked-windows across sessions, all flags for that window are now
+  cleared across sessions.
+* Lots and lots of bug fixes, fixing memory-leaks, etc.
+* Various manpage improvements.
+
 CHANGES FROM 1.5 TO 1.6, 23 January 2012
 
 * Extend the mode-mouse option to add a third choice which means the mouse

COPYING

@@ -0,0 +1,21 @@
+THIS IS FOR INFORMATION ONLY, CODE IS UNDER THE LICENCE AT THE TOP OF ITS FILE.
+
+The README, CHANGES, FAQ and TODO files are licensed under the ISC
+license. Files under examples/ remain copyright their authors unless otherwise
+stated in the file but permission has been received to distribute them with
+tmux. All other files have a license and copyright notice at their start,
+typically:
+
+Copyright (c) <author>
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

FAQ

@@ -238,6 +238,31 @@ would be welcome.
 
 vim users may also want to set the "ttyfast" option inside tmux.
 
+* How do I make ctrl and shift arrow keys work in emacs?
+
+The terminal-init-screen function in term/screen.el is called for new frames,
+but it doesn't configure any function keys.
+
+If the tmux xterm-keys option is on, it is enough to define the same keys as
+xterm. Add the following to init.el or .emacs to do this:
+
+(defadvice terminal-init-screen
+  ;; The advice is named `tmux', and is run before `terminal-init-screen' runs.
+  (before tmux activate)
+  ;; Docstring.  This describes the advice and is made available inside emacs;
+  ;; for example when doing C-h f terminal-init-screen RET
+  "Apply xterm keymap, allowing use of keys passed through tmux."
+  ;; This is the elisp code that is run before `terminal-init-screen'.
+  (if (getenv "TMUX")
+    (let ((map (copy-keymap xterm-function-map)))
+    (set-keymap-parent map (keymap-parent input-decode-map))
+    (set-keymap-parent input-decode-map map))))
+
+And ensure .tmux.conf contains "set -g xterm-keys on".
+
+Alternatively, the screen.el file can be copied to the load path and
+customized.
+
 * Why doesn't elinks set the window title inside tmux?
 
 There isn't a way to detect if a terminal supports setting the window title, so
@@ -326,51 +351,6 @@ lock(1) or vlock(1)) by using the following:
 
 bind x set lock-command '/usr/bin/vlock' \; lock-client \; set lock-command 'tput civis && read -s -n1'
 
-* How can I open a new window in the same directory as the current window?
-
-One option is to just run "TMUX= tmux" in the window. However, this only works if no
-command is running, so that you can input the command.
-
-A workaround is to let tmux know about the current path through an environment
-variable. To do so, use the following command:
-
-    [ -n "$TMUX" ] && tmux setenv TMUXPWD_$(tmux display -p "#I") $PWD
-
-Which sets TMUXPWD_i (where i is the number of the current window) to the path
-of the current directory. This command can be added to PS1, for example:
-
-    PS1='$([ -n "$TMUX" ] && tmux setenv TMUXPWD_$(tmux display -p "#I") $PWD)\h$ '
-
-When a new window is created, the shell should be asked to change
-directory. You can define a new binding (for example, if using GNU bash):
-
-    bind-key C-c run-shell 'tmux neww "cd $(tmux display -p "\$TMUXPWD_#I"); exec bash"'
-
-This solution will work even if a command is currently running in the terminal,
-but it will not work from a window that has just been swapped with another
-because TMUXPWD_i will not be updated after a swap. However, once a new prompt
-is displayed, TMUXPWD_i is updated properly.
-
-* tmux doesn't start with "daemon failed"
-
-tmux shows something similar to this when started:
-
-    fatal: server_start: daemon failed: No such file or directory
-    fatal: main_dispatch: imsg_read failed
-
-A possible reason is that /dev/null is not a character device or is otherwise
-inaccessible.
-
-Check with:
-
-    file /dev/null
-    ls -l /dev/null
-
-If it is not a character device or has incorrect permissions, it can typically
-be recreated with:
-
-    cd /dev && rm null && ./MAKEDEV null
-
 * vim displays reverse video instead of italics, while less displays italics
   (or just regular text) instead of reverse. What's wrong?
 
@@ -409,5 +389,76 @@ If your urxvt cannot display italics at all, make sure you have an italics
 capable font enabled, for example, add to ~/.Xdefaults:
 
 	urxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
+
+* How can I make tmux use my terminal's scrollback buffer?
+
+Normally, tmux enables the terminal's "alternate screen". Most terminals (such
+as xterm) do not save scrollback for the alternate screen. You might prefer
+tmux to use the normal screen, so it uses your terminal's scrollback
+buffer. This way, you can access the scrollback buffer as usual, for example
+using the mouse wheel - although there is no guarantee output inside tmux will
+always (or ever) be added to the scrollback.
+
+You can make tmux use the normal screen by telling it that your terminal does
+not have an alternate screen. Put the following in ~/.tmux.conf:
+
+        set -g terminal-overrides 'xterm*:smcup@:rmcup@'
+
+Adjust if your $TERM does not start with xterm.
+
+tmux will still emulate the alternate screen for applications run under tmux,
+so you don't really lose anything with this setting. The only disadvantage is
+that when you exit tmux, it will not restore whatever was there before you
+started.
+
+* How do I see the default configuration?
+
+Show the default session options by starting a new tmux server with no
+configuration file:
+
+        $ tmux -Lfoo -f/dev/null start\; show -g
+
+Or the default window options:
+
+        $ tmux -Lfoo -f/dev/null start\; show -gw
+
+* How do I copy a selection from tmux to the system's clipboard?
+
+When running in xterm(1), tmux can automatically send copied text to the
+clipboard. This is controlled by the set-clipboard option and also needs this
+X resource to be set:
+
+	XTerm*disallowedWindowOps: 20,21,SetXprop
+
+For rxvt-unicode (urxvt), there is an unofficial Perl extension here:
+
+        http://anti.teamidiot.de/static/nei/*/Code/urxvt/
+
+Otherwise a key binding for copy mode using xclip (or xsel) works:
+
+	bind -temacs-copy C-y copy-pipe "xclip -i >/dev/null"
+
+Or for inside and outside copy mode with the prefix key:
+
+        bind C-y run -b "tmux save-buffer - | xclip -i"
+
+On OS X, reattach-to-usernamespace lets pbcopy/pbpaste work:
+
+        https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
  
+* Why do I see dots around a session when I attach to it?
+
+tmux limits the size of the window to the smallest attached session. If
+it didn't do this then it would be impossible to see the entire window.
+The dots mark the size of the window tmux can display.
+
+To avoid this, detach all other clients when attaching:
+
+	$ tmux attach -d
+
+Or from inside tmux by detaching individual clients with C-b D or all
+using:
+
+	C-b : attach -d
+
 $Id$

Makefile.am

@@ -2,18 +2,19 @@
 
 # Obvious program stuff.
 bin_PROGRAMS = tmux
-dist_man1_MANS = tmux.1
+CLEANFILES = tmux.1.mdoc tmux.1.man
 
 # Distribution tarball options.
 EXTRA_DIST = \
-	CHANGES FAQ NOTES TODO examples compat \
-	array.h compat.h tmux.h osdep-*.c
+	CHANGES FAQ README TODO COPYING examples compat \
+	array.h compat.h tmux.h osdep-*.c mdoc2man.awk tmux.1
 dist-hook:
+	make clean
 	grep "^#found_debug=" configure
 	find $(distdir) -name .svn -type d|xargs rm -Rf
 
 # Preprocessor flags.
-CPPFLAGS += @XOPEN_DEFINES@
+CPPFLAGS += @XOPEN_DEFINES@ -DTMUX_CONF="\"$(sysconfdir)/tmux.conf\""
 
 # glibc as usual does things ass-backwards and hides useful things by default,
 # so everyone has to add this.
@@ -24,14 +25,17 @@ endif
 # Set flags for gcc. gcc4 whines abouts silly stuff so it needs slightly
 # different flags.
 if IS_GCC
-CFLAGS += -std=c99
+CFLAGS += -std=gnu99
 if IS_DEBUG
-CFLAGS += -g -ggdb -O0
+CFLAGS += -O0 -g
 CFLAGS += -Wno-long-long -Wall -W -Wnested-externs -Wformat=2
 CFLAGS += -Wmissing-prototypes -Wstrict-prototypes -Wmissing-declarations
 CFLAGS += -Wwrite-strings -Wshadow -Wpointer-arith -Wsign-compare
 CFLAGS += -Wundef -Wbad-function-cast -Winline -Wcast-align
+CFLAGS += -Wdeclaration-after-statement
 CPPFLAGS += -DDEBUG
+else
+CFLAGS += -O2
 endif
 if IS_GCC4
 CPPFLAGS += -iquote. -I/usr/local/include
@@ -45,8 +49,12 @@ endif
 
 # Set flags for Solaris.
 if IS_SUNOS
+if IS_GCC
+CPPFLAGS += -D_XPG6 -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS
+else
 CPPFLAGS += -D_XPG4_2 -D__EXTENSIONS__ -D_POSIX_PTHREAD_SEMANTICS
 endif
+endif
 
 # Set flags for Sun CC.
 if IS_SUNCC
@@ -66,8 +74,8 @@ dist_tmux_SOURCES = \
 	cmd-capture-pane.c \
 	cmd-choose-buffer.c \
 	cmd-choose-client.c \
-	cmd-choose-session.c \
-	cmd-choose-window.c \
+	cmd-choose-list.c \
+	cmd-choose-tree.c \
 	cmd-clear-history.c \
 	cmd-clock-mode.c \
 	cmd-command-prompt.c \
@@ -101,6 +109,7 @@ dist_tmux_SOURCES = \
 	cmd-new-window.c \
 	cmd-paste-buffer.c \
 	cmd-pipe-pane.c \
+	cmd-queue.c \
 	cmd-refresh-client.c \
 	cmd-rename-session.c \
 	cmd-rename-window.c \
@@ -114,18 +123,14 @@ dist_tmux_SOURCES = \
 	cmd-select-pane.c \
 	cmd-select-window.c \
 	cmd-send-keys.c \
-	cmd-send-prefix.c \
-	cmd-server-info.c \
 	cmd-set-buffer.c \
 	cmd-set-environment.c \
 	cmd-set-option.c \
-	cmd-show-buffer.c \
 	cmd-show-environment.c \
 	cmd-show-messages.c \
 	cmd-show-options.c \
 	cmd-source-file.c \
 	cmd-split-window.c \
-	cmd-start-server.c \
 	cmd-string.c \
 	cmd-suspend-client.c \
 	cmd-swap-pane.c \
@@ -133,11 +138,14 @@ dist_tmux_SOURCES = \
 	cmd-switch-client.c \
 	cmd-unbind-key.c \
 	cmd-unlink-window.c \
+	cmd-wait-for.c \
 	cmd.c \
 	colour.c \
+	control.c \
+	control-notify.c \
 	environ.c \
 	format.c \
-	grid-utf8.c \
+	grid-cell.c \
 	grid-view.c \
 	grid.c \
 	input-keys.c \
@@ -151,6 +159,7 @@ dist_tmux_SOURCES = \
 	log.c \
 	mode-key.c \
 	names.c \
+	notify.c \
 	options-table.c \
 	options.c \
 	paste.c \
@@ -165,6 +174,7 @@ dist_tmux_SOURCES = \
 	session.c \
 	signal.c \
 	status.c \
+	style.c \
 	tmux.c \
 	tty-acs.c \
 	tty-keys.c \
@@ -225,6 +235,25 @@ endif
 if NO_B64_NTOP
 nodist_tmux_SOURCES += compat/b64_ntop.c
 endif
+if NO_CFMAKERAW
+nodist_tmux_SOURCES += compat/cfmakeraw.c
+endif
+if NO_OPENAT
+nodist_tmux_SOURCES += compat/openat.c
+endif
+
+# Install tmux.1 in the right format.
+install-exec-hook:
+	if test x@MANFORMAT@ = xmdoc; then \
+		sed -e "s|@SYSCONFDIR@|$(sysconfdir)|g" $(srcdir)/tmux.1 \
+			>$(srcdir)/tmux.1.mdoc; \
+	else \
+		sed -e "s|@SYSCONFDIR@|$(sysconfdir)|g" $(srcdir)/tmux.1| \
+			$(AWK) -fmdoc2man.awk >$(srcdir)/tmux.1.man; \
+	fi
+	$(MKDIR_P) $(DESTDIR)$(mandir)/man1
+	$(INSTALL_DATA) $(srcdir)/tmux.1.@MANFORMAT@ \
+		$(DESTDIR)$(mandir)/man1/tmux.1
 
 # Update SF web site.
 upload-index.html: update-index.html

NOTES

@@ -1,82 +0,0 @@
-Welcome to tmux!
-
-tmux is a "terminal multiplexer", it enables a number of terminals (or windows)
-to be accessed and controlled from a single terminal. tmux is intended to be a
-simple, modern, BSD-licensed alternative to programs such as GNU screen.
-
-This release runs on OpenBSD, FreeBSD, NetBSD, Linux and OS X and may still
-run on Solaris and AIX (although they haven't been tested in a while). It is
-usable, although there remain a number of missing features and some remaining
-bugs are expected.
-
-If upgrading from 1.5, PLEASE NOTE:
-- The word-separators window option is now a session option.
-- The options used to change the window attributes when an alert occurs were
-  removed. Each kind of alert has its own individual set of options.
-- The ability to have a list of prefix keys was dropped in favour of two
-  separate options, prefix and prefix2.
-
-Since the 1.2 release that tmux depends on libevent. Download it from:
-
-	http://www.monkey.org/~provos/libevent/
-
-To build tmux from a release tarball, do:
-
-	$ ./configure && make
-	$ sudo make install
-
-To build from a version control checkout, the configure script must be
-generated by running:
-
-	$ sh autogen.sh
-
-tmux consists of a server part and multiple clients. The server is created when
-required and runs continuously unless killed by the user. Clients access the
-server through a socket in /tmp. Multiple sessions may be created on a single
-server and attached to a number of clients. Each session may then have a number
-of windows and windows may be linked to a number of sessions. Commands are
-available to create, rename and destroy windows and sessions; to attach and
-detach sessions from client terminals; to set configuration options; to split
-windows into several simultaneously displayed panes; and to bind and unbind
-command keys (invoked preceded by a prefix key, by default ctrl-b). Please see
-the tmux(1) man page for further information.
-
-A more extensive, but rough, todo list is included in the TODO file.
-
-tmux also depends on several features of the client terminal (TERM), if these
-are missing it may refuse to run, or not behave correctly.
-
-A Vim syntax file is available in the examples directory. To install it:
-
-- Drop the file in the syntax directory in your runtimepath (such as
-  ~/.vim/syntax/tmux.vim).
-- Make the filetype recognisable by adding the following to filetype.vim
-  in your runtimepath (~/.vim/filetype.vim):
-
-	augroup filetypedetect
-		au BufNewFile,BufRead .tmux.conf*,tmux.conf* setf tmux
-	augroup END
-
-- Switch on syntax highlighting by adding "syntax enable" to your vimrc file.
-
-For debugging, running tmux with -v or -vv will generate server and client log
-files in the current directory.
-
-tmux mailing lists are available; visit:
-
-	https://sourceforge.net/mail/?group_id=200378
-
-Bug reports, feature suggestions and especially code contributions are most
-welcome. Please send by email to:
-
-	nicm@users.sf.net
-
-This file and the CHANGES, FAQ and TODO files are licensed under the ISC
-license. Files under examples/ remain copyright their authors unless otherwise
-stated in the file but permission has been received to distribute them with
-tmux. All other files have a license and copyright notice at their
-start. Please contact me with any queries.
-
--- Nicholas Marriott <nicm@users.sf.net>
-
-$Id$

README

@@ -0,0 +1,60 @@
+Welcome to tmux!
+
+tmux is a "terminal multiplexer", it enables a number of terminals (or windows)
+to be accessed and controlled from a single terminal. tmux is intended to be a
+simple, modern, BSD-licensed alternative to programs such as GNU screen.
+
+This release runs on OpenBSD, FreeBSD, NetBSD, Linux and OS X and may still
+run on Solaris and AIX (although they haven't been tested in a while).
+
+tmux depends on libevent 2.x. Download it from:
+
+	http://www.monkey.org/~provos/libevent/
+
+To build tmux from a release tarball, do:
+
+	$ ./configure && make
+	$ sudo make install
+
+To get and build the latest from version control:
+
+	$ git clone git://git.code.sf.net/p/tmux/tmux-code tmux
+	$ cd tmux
+	$ sh autogen.sh
+	$ ./configure && make
+
+For more information see https://sourceforge.net/scm/?type=git&group_id=200378
+and http://git-scm.com. Patches should be sent by email to the mailing list at
+tmux-users@lists.sourceforge.net.
+
+For documentation on using tmux, see the tmux.1 manpage. It can be viewed from
+the source tree with:
+
+	$ nroff -mdoc tmux.1|less
+
+Some common questions are answered in the FAQ file and a more extensive (but
+slightly out of date) guide is available in the OpenBSD FAQ at
+http://www.openbsd.org/faq/faq7.html#tmux. A rough todo list is in the TODO
+file and some example configurations and a Vim syntax file are in the examples
+directory.
+
+For debugging, running tmux with -v or -vv will generate server and client log
+files in the current directory.
+
+tmux mailing lists are available. Visit:
+
+	https://sourceforge.net/mail/?group_id=200378
+
+Bug reports, feature suggestions and especially code contributions are most
+welcome. Please send by email to:
+
+	tmux-users@lists.sourceforge.net
+
+This file and the CHANGES, FAQ and TODO files are licensed under the ISC
+license. Files under examples/ remain copyright their authors unless otherwise
+stated in the file but permission has been received to distribute them with
+tmux. All other files have a license and copyright notice at their start.
+
+-- Nicholas Marriott <nicm@users.sf.net>
+
+$Id$

SYNCING

@@ -0,0 +1,174 @@
+Preamble
+========
+
+Tmux on SourceForge has two git repositories [1] "tmux-code" and "tmux-openbsd".
+Here's a description of them:
+
+* "tmux-code" is the portable version, the one which contains code for other
+  operating systems, and autotools, etc., which isn't found or needed in the
+  OpenBSD base system.
+
+* "tmux-openbsd" is the version of tmux in OpenBSD base system which provides
+  the basis of the portable tmux version.
+
+Note:  The "tmux-openbsd" repository is actually handled by "git cvsimport"
+running at 15 minute intervals, so a commit made to OpenBSD's tmux CVS
+repository will take at least that long to appear in this git repository.
+(It might take longer, depending on the CVS mirror used to import the
+OpenBSD code).
+
+It is assumed that the person doing the sync has read/write access to the
+tmux-code repository on SourceForge already.
+
+If you've never used git before, git tracks meta-data about the committer
+and the author, as part of a commit, hence:
+
+% git config [--global] user.name "Your name"
+% git config [--global] user.email "you@yourdomain.com"
+
+Note that, if you already have this in the global ~/.gitconfig option, then
+this will be used.  Setting this per-repository would involve not using the
+"--global" flag above.   If you wish to use the same credentials always,
+pass the "--global" option, as shown.
+
+This is a one-off operation once the repository has been cloned, assuming
+this information has ever been set before.
+
+Cloning repositories
+====================
+
+This involves having both tmux-code and tmux-openbsd cloned, as in:
+
+% cd /some/where/useful
+% git clone ssh://${USER}@git.code.sf.net/p/tmux/tmux
+% git clone ssh://${USER}@git.code.sf.net/p/tmux/tmux-openbsd
+
+Note that you do not need additional checkouts to manage the sync -- an
+existing clone of either repositories will suffice.  So if you already have
+these checkouts existing, skip that.
+
+Adding in git-remotes
+=====================
+
+Because the portable "tmux-code" git repository and the "tmux-openbsd"
+repository do not inherently share any history between each other, the
+history has been faked between them.  This "faking of history" is something
+which has to be told to git for the purposes of comparing the "tmux" and
+"tmux-openbsd" repositories for syncing.  To do this, we must reference the
+clone of the "tmux-openbsd" repository from the "tmux-code" repository, as
+shown by the following command:
+
+% cd /path/to/tmux-code
+% git remote add obsd-tmux file:///path/to/tmux-openbsd
+
+So that now, the remote "obsd-tmux" can be used to reference branches and
+commits from the "tmux-openbsd" repository, but from the context of the
+portable "tmux-code" repository, which makes sense because it's the "tmux"
+repository which will have the updates applied to them.
+
+Fetching updates
+================
+
+To ensure the latest commits from "tmux-openbsd" can be found from within
+"tmux-code", we have to ensure the "master" branch from "tmux-openbsd" is
+up-to-date first, and then reference that update in "tmux-code", as in:
+
+% cd /path/to/tmux-openbsd
+% git checkout master
+% git pull
+
+Then back in "tmux-code":
+
+% cd /path/to/tmux-code
+% git fetch obsd-tmux-code
+
+Creating the necessary branches
+===============================
+
+Now that "tmux-code" can see commits and branches from "tmux-openbsd" by way
+of the remote name "obsd-tmux", we can now create the master branch from
+"tmux-openbsd" in the "tmux-code" repository:
+
+% git checkout -b obsd-master obsd-tmux/master
+
+Adding in the fake history points
+================================= 
+
+To tie both the "master" branch from "tmux-code" and the "obsd-master"
+branch from "tmux-openbsd" together, the fake history points added to the
+"tmux-code" repository need to be added.  To do this, we must add an
+additional refspec line, as in:
+
+% cd /path/to/tmux-code
+% git config --add remote.origin.fetch '+refs/replace/*:refs/replace/*'
+% git fetch origin
+
+Performing the Sync
+===================
+
+Make sure the "master" branch is checked out:
+
+% git checkout master
+
+The following will show commits on OpenBSD not yet synched with "tmux-code":
+
+% git log master..obsd-master
+
+From there, merge the result in, fixing up any conflicts which might arise.
+
+% git merge obsd-master
+
+Then ensure things look correct by BULDING the result of that sync:
+
+% make clean && ./autogen.sh && ./configure && make
+
+Compare the git merge result with what's on origin/master -- that is, check
+which commits you're about to push:
+
+% git log origin/master..master
+
+And if happy:
+
+% git push origin master
+
+Release tmux for next version
+=============================
+
+1. Comment the "found_debug=yes" line in configure.ac, since releases
+   don't have debugging enabled, otherwise make(1) aborts when
+   preparing the distribution.
+
+2. Update and commit README and CHANGES.  The former should be checked for
+   anything outdated and updated with a list of things that might break
+   upgrades and the latter should mention all the major changes since
+   the last version.
+
+3. Tag with:
+
+   % git tag -a 1.X
+
+   Where "1.X" is the next version.
+
+   Push the tag out with:
+
+   % git push 1.X
+
+4. Build the tarball with make dist.  Now that it's using autoconf there
+   shouldn't be any weird files (such as the original and rejection files
+   from patch(1)) but it doesn't hurt taking a quick look at it.
+
+5. Split the release changes into a new file.  This should be named
+   tmux-$VERSION-readme to make sourceforge show it automagically in specific
+   parts of the project page.
+
+6. Upload the tarball and the above file. Make the tarball the default
+   download by selecting all operating systems under the file details.
+
+7. Run make update-index.html upload-index.html to replace %%VERSION%%.
+
+8. Bump version in configure.ac and uncomment "found_debug=yes" to create
+   a debug build by default.
+
+9. Update freshmeat.
+
+[1] https://sourceforge.net/p/tmux/_list/git

TODO

@@ -1,144 +1,133 @@
-- implicitly add exec to the commands for new windows (switch to disable it)?
-- bring back detach-session to detach all clients on a session?
-- allow fnmatch for -c, so that you can, eg, detach all clients
-- garbage collect window history (100 lines at a time?) if it hasn't been used
-  in $x time
-- flags to centre screen in window
-- activity/bell should be per-window not per-link? what if it is cur win in
-  session not being watched?
-- use a better termcap internally instead of screen, perhaps xterm
-- should be able to move to a hidden pane and it would be moved into view. pane
-  number in status line/top-right would be cool for this
-- support other mouse modes (highlight etc) and use it in copy mode
-- set-remain-on-exit is a bit of a hack, some way to do it generically?
-- clear window title on exit
-- would be nice to be able to use "--" to mark start of command w/ neww etc
-  to avoid quoting
-- make command sequences more usable: don't require space after ;, handle
-  errors better
-- attach should have a flag to create session if it doesn't exist
-- choice and more mode would be better per client than per window?
-- hooks to which commands may be attached, for example: tmux add-hook
-  "new-session" if-shell "[ -e $HOME/.tmux-session.conf ]" source-file
-  $HOME/.tmux-session.conf
-- get it passing all the vttest tests that don't require resizing the terminal
-- way to set socket path from config file
-- what about utmp etc? can tmux update it like screen? setgid?
+- command bits and pieces:
+	* use "--" to mark start of command w/ neww etc to avoid quoting
+	* why doesn't command-prompt work if made read-only?
+	* allow multiple targets: fnmatch for -t/-c, for example detach all
+	  clients with -t*
+	* add -c for new-session like new-window
+	* attach should take a pane and select it as well as attaching
+	* ' and " should be parsed the same (eg "\e" vs '\e') in config
+	  and command prompt
+	* last-pane across sessions
+	* exact match operator for targets (or break the substring match
+	  and require eg x* instead of just x)
+
+- make command sequences more usable
+	* don't require space after ;
+	* options for error handling: && and ||?
+
+- options bits and pieces:
+	* set-remain-on-exit is a complete hack
+	* way to set socket path from config file
+
+- format improvements:
+	* option to quote format (#{session_name:quoted})
+	* formats need conditions for >0 (for #P)
+	* some way to pad # stuff with spaces, #!2T maybe
+	* status stuff is redundant with formats
+	* last window update time and format for it
+	* formats to show if a window is linked into multiple sessions, into
+	  multiple attached sessions, and is the active window in multiple
+	  attached sessions?
+
+- choose mode improvements:
+	* choose-pane command (augment choose-tree to do this?)
+	* choose-mode and copy-mode are very similar, make choose-mode a subset?
+	* flag to choose-* for sort order
+	* choose mode would be better per client than per window
+	* two choices (first one then second, for swap-pane and join-pane)
+
+- improve monitor-*:
+	* straighten out rules for multiple clients
+	* think about what happens across sessions
+	* monitor changes within a region
+	* perhaps monitor /all/ panes in the window not just one
+
+- improve mouse support:
+	* bind commands to mouse in different areas? 
+	* more fine-grained options
+	* commands executed when clicking on a pattern (URL)
+	* send arrow key sequences for mouse scroll wheel in alternate screen
+	* mouse-select-pane will screw up with !MODE_MOUSE_STANDARD (it sets
+	  the flag on w/o checking the others before calling tty_update_mode)
+
+- hooks!
+
 - warts on current naming:
-  	- display-time but message-fg/bg/attr
-	- list-* vs show-*
-	- server-info
-	- up-pane/down-pane/swap-pane -U/swap-pane -D vs next-*/previous-*
-	- split-window -> split-pane??
-- a way for force-width/height to apply to only one pane (how?)
-- command to list what is actually running in each window with command line,
-  pid (need some adaption of the osdep code)
-- support for bce
-- some way to force a screen to use the entire terminal even if it is forced
-  to be smaller by other clients. pan smaller terminal? (like screen F)
-	-- idea of a "view" onto a window, need base x/y offsets for redraw
-- handle resize better in copy mode
-- way to copy stuff that is off screen due to resize
-- commands should be able to succeed or fail and have || or && for command
-  lists
-- some way to KEEP a command running continually and just use its LAST line of
-  output
-- UTF-8 to a non-UTF-8 terminal should not be able to balls up
-  the terminal - www/ruby-addressable; make regress
-- support esc-esc to quit in modes
-- fix ctrl+F1-F4 output. to what?
-- better utf8 support: window names, prompt input, message display
-- session history for client and last-session command
-- option to change status line colour when current window is in a mode?
-- option to move copy mode indicator into status line
-- list-buffer/show-buffer should display UTF-8
-- selection behaviour closer to vi in vi mode
-- live update: server started with -U connects to server, requests sessions and
-  windows, receives fds
-- command to show a tree of sessions-windows-panes (active marked with *)
-- sort out inheriting config from shell on new sessions/windows:
-        should pick up default-path/termios/etc from client if possible,
-	else leave empty/default
-- link panes into multiple windows
-- bells should be passed between sessions with visual-bell etc
-- use screen-256color when started on 256 colour terminal??
-- if-shell/run-shell should block further command execution in the same command
-  sequence until its shell exits, to allow them to be used from the config file
-- better session sharing: create-socket command to create socket somewhere (-r
-  flag for readonly)
-- multiline status line (no?)
-- flag for absolute pane size to resize-pane
-- sanity check input to socket
-- support title stack, both internally and externally
-	http://docs.freebsd.org/cgi/getmsg.cgi?fetch=1149299+0+archive/2010/freebsd-questions/20100207.freebsd-questions
-- command to show status line information briefly when it is off
-- some way to pad # stuff with spaces, #!2T maybe
-- a binding to "scroll down and exit at bottom" copy mode
-- some way to pass keystrokes in copy mode through to underlying window
-- last window update time and # replacement for it for display-message
-- find-window across sessions - other ways to make session handling easier?
-- ' and " should be parsed the same (eg "\e" vs '\e') in config and command
-  prompt?
-- command to toggle selection not to move it in copy-mode
-- why are alerts per-winlink? try per window?
-- audit of escape sequence support vs xterm
-- support binding keys to mouse (mouse-select-pane -> mouse-keys or something,
-  mouse click == select-pane -t %%, mouse scroll up == copy-mode)
-- something for -t "last window in session" so a session can be used as a stack
-- synchronous commands - client sends cmd and blocks, neww/splitw saves client
-  ptr then when program inside died, sends MSG_SOMETHING with wait status to
-  client
-- documentation improvements - rlpowell's tutorial - build instructions
-- bind commands to key sequences? -- make it so ALL keys go through a table,
-  first an implicit table in which C-b is the only default binding to a
-  command that says "next key from $othertable" and so on. means -n can
-  go away as well
-- monitor, bell etc should monitor /all/ panes in the window not just one
-- a history of commands that can be reversed (reverse member of each command,
-  and a buffer) info() when changing to same window
-- way to add dest for break-pane; maybe some easier way to unbreak-pane
-- case insensitive searching
-- option to move status line to top
-- configurable borders and empty space filler for when panes < window?
-- mouse-select-pane will screw up with !MODE_MOUSE_STANDARD (it sets the
-  flag on w/o checking the others before calling tty_update_mode)
-- multiple keys could be done with tables, ie have prefixes go and instead
-	bind -n ^A prefix-table "default"
-  where prefix-table sets command lookup table and sets prefix flag, then next
-  key is looked up in that table
-- pass shell commands as argv rather than strings, allow them to be specified
-  in commands without quotes
-- a command to choose from a generic list, so you can do eg
-  choose-list -l Abc,Moo,Blah "run-shell 'sh /my/choose/script %%'"
-- numeric prefix in copy mode should be paste buffer for C-w
-- named buffers and allow gaps in the stack
-- get rid of separate UTF-8 cell stuff: add 1 byte to cell and store BMP as
-  uint16_t+3 bits of flags. anything <=0xffff is Unicode, higher are used to
-  build tree of combined characters/non-BMP (LRU dropped when full)
-- entry in FAQ about what to do when someone does mkdir /tmp/tmux-1000
-- show size under pane number in display-panes mode
-- monitor-activity is broken in several ways with multiple clients
-- monitor-activity should be more powerful (eg set a region)
-- maybe a way to put pane names instead of window names in status line
-- support for borderless panes
-- run-shell/if-shell should support status_replace stuff
-- wait-pane command or another way to make it synchronous/wait for command to
-  finish
-- last-pane across sessions
-- attach should take a pane and select it as well as attaching
-- should default-path be a window option?
-- option to put status line at top (why?)
-- panes should have names like windows
-- command-prompt doesn't work if made read-only. why?
-- option to quote format eg #{session_name:quoted}
-- formats need to be used for much much more stuff!
-- formats need conditions for >0 (for #P)
-- flags to find-window to select what is searched (title, name, content, history)
-- fetch full command line on !Linux, and add option to strip prefixes
-  such as "sh " "/bin/sh " etc etc
-- synchronize-windows option
-- possibly support rxvt-unicode extended mouse input (1015)
-- append to buffer in copy mode
-* We need a tmux terminfo entry to document the extensions we are using in
-  upstream terminfo. Must NOT change (only add or remove) anything from
-  TERM=screen so we can fallback!
+	* display-time but message-fg/bg/attr
+	* list-* vs show-*
+	* split-window -> split-pane??
+
+- better UTF-8 support:
+	* #22T can split in the middle of UTF-8 characters!
+	* window names and titles
+	* message display
+	* prompt input
+	* multibyte key input
+	* buffer_sample and the choose-* could show UTF-8 properly
+
+- copy/paste improvements:
+	* incremental searching
+	* append to buffer
+	* paste w/o trailing whitespace
+	* named buffers and allow gaps in the stack
+	* command to toggle selection not to move it in copy-mode
+
+- layout stuff
+	* way to tag a layout as a number/name
+	* maybe keep last layout + size around and if size reverts just put it
+          back
+	* revamp layouts: they are too complicated, should be more closely
+	  integrated, should support hints, layout sets should just be a
+	  special case of custom layouts, and we should support panes that are
+	  not attached to a cell at all. this could be the time to introduce
+	  panelink to replace layout_cell
+	* way to set hints/limits about pane size for resizing
+	* panning over window (window larger than visible)
+
+- terminfo bits
+	* use a better termcap internally instead of screen, perhaps xterm
+	* use screen-256color when started on 256 colour terminal?
+	* need a tmux terminfo entry to document the extensions we are using in
+	  upstream terminfo
+	* support title stack, both internally and externally (restore on
+	  detach) http://docs.freebsd.org/cgi/getmsg.cgi?fetch=1149299+0+archive/2010/freebsd-questions/20100207.freebsd-questions
+
+- code cleanup
+	* instead of separate window and session options, just one master
+	  options list with each option having a type (window or session), then
+	  options on window, on session, and global. for window options we look
+	  window->session->global, and for session we look session->global
+	* the way pane, window, session destroy is handled is too complicated
+	  and the distinction between session.c, window.c and server-fn.c
+	  functions is not clear. could we just have kill_pane(),
+	  kill_window(), unlink_window(), kill_session() that fix up all data
+	  structures (flagging sessions as dead) and return a value to say
+	  whether clients need to be checked for dead sessions? sort of like
+	  session_detach now but more so. or some other scheme to make it
+	  simpler and clearer? also would be nice to remove/rename server-fn.c
+	* more readable way to work out the various things commands need to
+	  know about the client, notably:
+		- is this the config file? (cmdq->c == NULL)
+		- is this a command client? (cmdq->c != NULL &&
+                  cmdq->c->session == NULL)
+		- is this a control client?
+		- can i do stdin or stdout to this client?
+	  or even guarantee that cmdq->c != NULL and provide a better way to
+	  tell when in the config file - then we use cmdq->c if we need a
+	  client w/o a session else cmd_current_client
+	* optimize pane redraws, 20120318184853.GK10965@yelena.nicm.ath.cx
+
+- miscellaneous
+	* way to keep a job running just read its last line of output for #()
+	* link panes into multiple windows
+	* live update: server started with -U connects to server, requests
+	  sessions and windows, receives file descriptors
+	* there are inconsistencies in what we get from old shell and what
+	  comes from config for new sessions and windows
+	* multiline status line?
+	* bind commands to key sequences -- make it so ALL keys go through a
+	  table, first an implicit table in which C-b is the only default
+	  binding to a command that says "next key from $othertable" and so
+	  on. means -n can go away as well
+
+

arguments.c

@@ -20,9 +20,25 @@
 
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "tmux.h"
 
+/*
+ * Manipulate command arguments.
+ */
+
+struct args_entry	*args_find(struct args *, u_char);
+
+RB_GENERATE(args_tree, args_entry, entry, args_cmp);
+
+/* Arguments tree comparison function. */
+int
+args_cmp(struct args_entry *a1, struct args_entry *a2)
+{
+	return (a1->flag - a2->flag);
+}
+
 /* Create an arguments set with no flags. */
 struct args *
 args_create(int argc, ...)
@@ -32,8 +48,6 @@ args_create(int argc, ...)
 	int		 i;
 
 	args = xcalloc(1, sizeof *args);
-	if ((args->flags = bit_alloc(SCHAR_MAX)) == NULL)
-		fatal("bit_alloc failed");
 
 	args->argc = argc;
 	if (argc == 0)
@@ -49,36 +63,36 @@ args_create(int argc, ...)
 	return (args);
 }
 
+/* Find a flag in the arguments tree. */
+struct args_entry *
+args_find(struct args *args, u_char ch)
+{
+	struct args_entry	entry;
+
+	entry.flag = ch;
+	return (RB_FIND(args_tree, &args->tree, &entry));
+}
+
 /* Parse an argv and argc into a new argument set. */
 struct args *
 args_parse(const char *template, int argc, char **argv)
 {
 	struct args	*args;
-	char		*ptr;
 	int		 opt;
 
 	args = xcalloc(1, sizeof *args);
-	if ((args->flags = bit_alloc(SCHAR_MAX)) == NULL)
-		fatal("bit_alloc failed");
 
 	optreset = 1;
 	optind = 1;
 
 	while ((opt = getopt(argc, argv, template)) != -1) {
-		if (opt < 0 || opt >= SCHAR_MAX)
+		if (opt < 0)
 			continue;
-		if (opt == '?' || (ptr = strchr(template, opt)) == NULL) {
-			xfree(args->flags);
-			xfree(args);
+		if (opt == '?' || strchr(template, opt) == NULL) {
+			args_free(args);
 			return (NULL);
 		}
-
-		bit_set(args->flags, opt);
-		if (ptr[1] == ':') {
-			if (args->values[opt] != NULL)
-				xfree(args->values[opt]);
-			args->values[opt] = xstrdup(optarg);
-		}
+		args_set(args, opt, optarg);
 	}
 	argc -= optind;
 	argv += optind;
@@ -93,26 +107,28 @@ args_parse(const char *template, int argc, char **argv)
 void
 args_free(struct args *args)
 {
-	u_int	i;
+	struct args_entry	*entry;
+	struct args_entry	*entry1;
 
 	cmd_free_argv(args->argc, args->argv);
 
-	for (i = 0; i < SCHAR_MAX; i++) {
-		if (args->values[i] != NULL)
-			xfree(args->values[i]);
+	RB_FOREACH_SAFE(entry, args_tree, &args->tree, entry1) {
+		RB_REMOVE(args_tree, &args->tree, entry);
+		free(entry->value);
+		free(entry);
 	}
 
-	xfree(args->flags);
-	xfree(args);
+	free(args);
 }
 
 /* Print a set of arguments. */
 size_t
 args_print(struct args *args, char *buf, size_t len)
 {
-	size_t		 off;
-	int		 i;
-	const char	*quotes;
+	size_t		 	 off;
+	int			 i;
+	const char		*quotes;
+	struct args_entry	*entry;
 
 	/* There must be at least one byte at the start. */
 	if (len == 0)
@@ -121,23 +137,23 @@ args_print(struct args *args, char *buf, size_t len)
 
 	/* Process the flags first. */
 	buf[off++] = '-';
-	for (i = 0; i < SCHAR_MAX; i++) {
-		if (!bit_test(args->flags, i) || args->values[i] != NULL)
+	RB_FOREACH(entry, args_tree, &args->tree) {
+		if (entry->value != NULL)
 			continue;
 
 		if (off == len - 1) {
 			buf[off] = '\0';
 			return (len);
 		}
-		buf[off++] = i;
+		buf[off++] = entry->flag;
 		buf[off] = '\0';
 	}
 	if (off == 1)
 		buf[--off] = '\0';
 
 	/* Then the flags with arguments. */
-	for (i = 0; i < SCHAR_MAX; i++) {
-		if (!bit_test(args->flags, i) || args->values[i] == NULL)
+	RB_FOREACH(entry, args_tree, &args->tree) {
+		if (entry->value == NULL)
 			continue;
 
 		if (off >= len) {
@@ -145,12 +161,13 @@ args_print(struct args *args, char *buf, size_t len)
 			return (len);
 		}
 
-		if (strchr(args->values[i], ' ') != NULL)
+		if (strchr(entry->value, ' ') != NULL)
 			quotes = "\"";
 		else
 			quotes = "";
 		off += xsnprintf(buf + off, len - off, "%s-%c %s%s%s",
-		    off != 0 ? " " : "", i, quotes, args->values[i], quotes);
+		    off != 0 ? " " : "", entry->flag, quotes, entry->value,
+		    quotes);
 	}
 
 	/* And finally the argument vector. */
@@ -175,43 +192,55 @@ args_print(struct args *args, char *buf, size_t len)
 int
 args_has(struct args *args, u_char ch)
 {
-	return (bit_test(args->flags, ch));
+	return (args_find(args, ch) == NULL ? 0 : 1);
 }
 
-/* Set argument value. */
+/* Set argument value in the arguments tree. */
 void
 args_set(struct args *args, u_char ch, const char *value)
 {
-	if (args->values[ch] != NULL)
-		xfree(args->values[ch]);
+	struct args_entry	*entry;
+
+	/* Replace existing argument. */
+	if ((entry = args_find(args, ch)) != NULL) {
+		free(entry->value);
+		entry->value = NULL;
+	} else {
+		entry = xcalloc(1, sizeof *entry);
+		entry->flag = ch;
+		RB_INSERT(args_tree, &args->tree, entry);
+	}
+
 	if (value != NULL)
-		args->values[ch] = xstrdup(value);
-	else
-		args->values[ch] = NULL;
-	bit_set(args->flags, ch);
+		entry->value = xstrdup(value);
 }
 
 /* Get argument value. Will be NULL if it isn't present. */
 const char *
 args_get(struct args *args, u_char ch)
 {
-	return (args->values[ch]);
+	struct args_entry	*entry;
+
+	if ((entry = args_find(args, ch)) == NULL)
+		return (NULL);
+	return (entry->value);
 }
 
 /* Convert an argument value to a number. */
 long long
-args_strtonum(struct args *args,
-    u_char ch, long long minval, long long maxval, char **cause)
+args_strtonum(struct args *args, u_char ch, long long minval, long long maxval,
+    char **cause)
 {
-	const char	*errstr;
-	long long 	 ll;
+	const char		*errstr;
+	long long 	 	 ll;
+	struct args_entry	*entry;
 
-	if (!args_has(args, ch)) {
+	if ((entry = args_find(args, ch)) == NULL) {
 		*cause = xstrdup("missing");
 		return (0);
 	}
 
-	ll = strtonum(args->values[ch], minval, maxval, &errstr);
+	ll = strtonum(entry->value, minval, maxval, &errstr);
 	if (errstr != NULL) {
 		*cause = xstrdup(errstr);
 		return (0);

array.h

@@ -109,13 +109,12 @@
 } while (0)
 
 #define ARRAY_FREE(a) do {						\
-	if ((a)->list != NULL)						\
-		xfree((a)->list);					\
+	free((a)->list);						\
 	ARRAY_INIT(a);							\
 } while (0)
 #define ARRAY_FREEALL(a) do {						\
 	ARRAY_FREE(a);							\
-	xfree(a);							\
+	free(a);							\
 } while (0)
 
 #endif

attributes.c

@@ -26,27 +26,21 @@ const char *
 attributes_tostring(u_char attr)
 {
 	static char	buf[128];
+	size_t		len;
 
 	if (attr == 0)
 		return ("none");
 
-	buf[0] = '\0';
-	if (attr & GRID_ATTR_BRIGHT)
-		strlcat(buf, "bright,", sizeof (buf));
-	if (attr & GRID_ATTR_DIM)
-		strlcat(buf, "dim,", sizeof (buf));
-	if (attr & GRID_ATTR_UNDERSCORE)
-		strlcat(buf, "underscore,", sizeof (buf));
-	if (attr & GRID_ATTR_BLINK)
-		strlcat(buf, "blink,", sizeof (buf));
-	if (attr & GRID_ATTR_REVERSE)
-		strlcat(buf, "reverse,", sizeof (buf));
-	if (attr & GRID_ATTR_HIDDEN)
-		strlcat(buf, "hidden,", sizeof (buf));
-	if (attr & GRID_ATTR_ITALICS)
-		strlcat(buf, "italics,", sizeof (buf));
-	if (*buf != '\0')
-		*(strrchr(buf, ',')) = '\0';
+	len = xsnprintf(buf, sizeof buf, "%s%s%s%s%s%s%s",
+		attr & GRID_ATTR_BRIGHT ? "bright," : "",
+		attr & GRID_ATTR_DIM ? "dim," : "",
+		attr & GRID_ATTR_UNDERSCORE ? "underscore," : "",
+		attr & GRID_ATTR_BLINK ? "blink," : "",
+		attr & GRID_ATTR_REVERSE ? "reverse," : "",
+		attr & GRID_ATTR_HIDDEN ? "hidden," : "",
+		attr & GRID_ATTR_ITALICS ? "italics," : "");
+	if (len > 0)
+		buf[len - 1] = '\0';
 
 	return (buf);
 }

autogen.sh

@@ -1,8 +1,10 @@
 #!/bin/sh
 # $Id$
 
-[ -z "$AUTOMAKE_VERSION" ] && export AUTOMAKE_VERSION=1.10
-[ -z "$AUTOCONF_VERSION" ] && export AUTOCONF_VERSION=2.65
+if [ "x$(uname)" = "xOpenBSD" ]; then
+	[ -z "$AUTOMAKE_VERSION" ] && export AUTOMAKE_VERSION=1.10
+	[ -z "$AUTOCONF_VERSION" ] && export AUTOCONF_VERSION=2.65
+fi
 
 die()
 {

cfg.c

@@ -19,144 +19,148 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#include <ctype.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
 
-/*
- * Config file parser. Pretty quick and simple, each line is parsed into a
- * argv array and executed as a command.
- */
+struct cmd_q		*cfg_cmd_q;
+int			 cfg_finished;
+int			 cfg_references;
+struct causelist	 cfg_causes;
+struct client		*cfg_client;
 
-void printflike2 cfg_print(struct cmd_ctx *, const char *, ...);
-void printflike2 cfg_error(struct cmd_ctx *, const char *, ...);
-
-char	 	       *cfg_cause;
-int     	 	cfg_finished;
-struct causelist	cfg_causes = ARRAY_INITIALIZER;
-
-/* ARGSUSED */
-void printflike2
-cfg_print(unused struct cmd_ctx *ctx, unused const char *fmt, ...)
-{
-}
-
-/* ARGSUSED */
-void printflike2
-cfg_error(unused struct cmd_ctx *ctx, const char *fmt, ...)
-{
-	va_list	ap;
-
-	va_start(ap, fmt);
-	xvasprintf(&cfg_cause, fmt, ap);
-	va_end(ap);
-}
-
-void printflike2
-cfg_add_cause(struct causelist *causes, const char *fmt, ...)
-{
-	char	*cause;
-	va_list	 ap;
-
-	va_start(ap, fmt);
-	xvasprintf(&cause, fmt, ap);
-	va_end(ap);
-
-	ARRAY_ADD(causes, cause);
-}
-
-/*
- * Load configuration file. Returns -1 for an error with a list of messages in
- * causes. Note that causes must be initialised by the caller!
- */
 int
-load_cfg(const char *path, struct cmd_ctx *ctxin, struct causelist *causes)
+load_cfg(const char *path, struct cmd_q *cmdq, char **cause)
 {
 	FILE		*f;
-	u_int		 n;
-	char		*buf, *line, *cause;
-	size_t		 len;
+	u_int		 n, found;
+	char		*buf, *copy, *line, *cause1, *msg;
+	size_t		 len, oldlen;
 	struct cmd_list	*cmdlist;
-	struct cmd_ctx	 ctx;
-	int		 retval;
 
+	log_debug("loading %s", path);
 	if ((f = fopen(path, "rb")) == NULL) {
-		cfg_add_cause(causes, "%s: %s", path, strerror(errno));
+		xasprintf(cause, "%s: %s", path, strerror(errno));
 		return (-1);
 	}
-	n = 0;
 
+	n = found = 0;
 	line = NULL;
-	retval = 0;
 	while ((buf = fgetln(f, &len))) {
+		/* Trim \n. */
 		if (buf[len - 1] == '\n')
 			len--;
+		log_debug("%s: %.*s", path, (int)len, buf);
 
-		if (line != NULL)
-			line = xrealloc(line, 1, strlen(line) + len + 1);
-		else {
+		/* Current line is the continuation of the previous one. */
+		if (line != NULL) {
+			oldlen = strlen(line);
+			line = xrealloc(line, 1, oldlen + len + 1);
+		} else {
+			oldlen = 0;
 			line = xmalloc(len + 1);
-			*line = '\0';
 		}
 
-		/* Append buffer to line. strncat will terminate. */
-		strncat(line, buf, len);
+		/* Append current line to the previous. */
+		memcpy(line + oldlen, buf, len);
+		line[oldlen + len] = '\0';
 		n++;
 
 		/* Continuation: get next line? */
 		len = strlen(line);
 		if (len > 0 && line[len - 1] == '\\') {
 			line[len - 1] = '\0';
-			continue;
+
+			/* Ignore escaped backslash at EOL. */
+			if (len > 1 && line[len - 2] != '\\')
+				continue;
 		}
-		buf = line;
+		copy = line;
 		line = NULL;
 
-		if (cmd_string_parse(buf, &cmdlist, &cause) != 0) {
-			xfree(buf);
-			if (cause == NULL)
-				continue;
-			cfg_add_cause(causes, "%s: %u: %s", path, n, cause);
-			xfree(cause);
+		/* Skip empty lines. */
+		buf = copy;
+		while (isspace((u_char)*buf))
+			buf++;
+		if (*buf == '\0') {
+			free(copy);
 			continue;
-		} else
-			xfree(buf);
+		}
+
+		/* Parse and run the command. */
+		if (cmd_string_parse(buf, &cmdlist, path, n, &cause1) != 0) {
+			free(copy);
+			if (cause1 == NULL)
+				continue;
+			xasprintf(&msg, "%s:%u: %s", path, n, cause1);
+			ARRAY_ADD(&cfg_causes, msg);
+			free(cause1);
+			continue;
+		}
+		free(copy);
+
 		if (cmdlist == NULL)
 			continue;
-		cfg_cause = NULL;
-
-		if (ctxin == NULL) {
-			ctx.msgdata = NULL;
-			ctx.curclient = NULL;
-			ctx.cmdclient = NULL;
-		} else {
-			ctx.msgdata = ctxin->msgdata;
-			ctx.curclient = ctxin->curclient;
-			ctx.cmdclient = ctxin->cmdclient;
-		}
-
-		ctx.error = cfg_error;
-		ctx.print = cfg_print;
-		ctx.info = cfg_print;
-
-		cfg_cause = NULL;
-		if (cmd_list_exec(cmdlist, &ctx) == 1)
-			retval = 1;
+		cmdq_append(cmdq, cmdlist);
 		cmd_list_free(cmdlist);
-		if (cfg_cause != NULL) {
-			cfg_add_cause(
-			    causes, "%s: %d: %s", path, n, cfg_cause);
-			xfree(cfg_cause);
-		}
-	}
-	if (line != NULL) {
-		cfg_add_cause(causes,
-		    "%s: %d: line continuation at end of file", path, n);
-		xfree(line);
+		found++;
 	}
+	if (line != NULL)
+		free(line);
 	fclose(f);
 
-	return (retval);
+	return (found);
+}
+
+void
+cfg_default_done(unused struct cmd_q *cmdq)
+{
+	if (--cfg_references != 0)
+		return;
+	cfg_finished = 1;
+
+	if (!RB_EMPTY(&sessions))
+		cfg_show_causes(RB_MIN(sessions, &sessions));
+
+	cmdq_free(cfg_cmd_q);
+	cfg_cmd_q = NULL;
+
+	if (cfg_client != NULL) {
+		/*
+		 * The client command queue starts with client_exit set to 1 so
+		 * only continue if not empty (that is, we have been delayed
+		 * during configuration parsing for long enough that the
+		 * MSG_COMMAND has arrived), else the client will exit before
+		 * the MSG_COMMAND which might tell it not to.
+		 */
+		if (!TAILQ_EMPTY(&cfg_client->cmdq->queue))
+			cmdq_continue(cfg_client->cmdq);
+		cfg_client->references--;
+		cfg_client = NULL;
+	}
+}
+
+void
+cfg_show_causes(struct session *s)
+{
+	struct window_pane	*wp;
+	char			*cause;
+	u_int			 i;
+
+	if (s == NULL || ARRAY_EMPTY(&cfg_causes))
+		return;
+	wp = s->curw->window->active;
+
+	window_pane_set_mode(wp, &window_copy_mode);
+	window_copy_init_for_output(wp);
+	for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
+		cause = ARRAY_ITEM(&cfg_causes, i);
+		window_copy_add(wp, "%s", cause);
+		free(cause);
+	}
+	ARRAY_FREE(&cfg_causes);
 }

client.c

@@ -17,6 +17,7 @@
  */
 
 #include <sys/types.h>
+#include <sys/file.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/un.h>
@@ -34,20 +35,59 @@
 
 struct imsgbuf	client_ibuf;
 struct event	client_event;
-const char     *client_exitmsg;
+struct event	client_stdin;
+enum {
+	CLIENT_EXIT_NONE,
+	CLIENT_EXIT_DETACHED,
+	CLIENT_EXIT_DETACHED_HUP,
+	CLIENT_EXIT_LOST_TTY,
+	CLIENT_EXIT_TERMINATED,
+	CLIENT_EXIT_LOST_SERVER,
+	CLIENT_EXIT_EXITED,
+	CLIENT_EXIT_SERVER_EXITED,
+} client_exitreason = CLIENT_EXIT_NONE;
 int		client_exitval;
 enum msgtype	client_exittype;
+const char     *client_exitsession;
 int		client_attached;
 
+int		client_get_lock(char *);
 int		client_connect(char *, int);
 void		client_send_identify(int);
-void		client_send_environ(void);
-void		client_write_server(enum msgtype, void *, size_t);
+int		client_write_one(enum msgtype, int, const void *, size_t);
+int		client_write_server(enum msgtype, const void *, size_t);
 void		client_update_event(void);
 void		client_signal(int, short, void *);
+void		client_stdin_callback(int, short, void *);
+void		client_write(int, const char *, size_t);
 void		client_callback(int, short, void *);
 int		client_dispatch_attached(void);
 int		client_dispatch_wait(void *);
+const char     *client_exit_message(void);
+
+/*
+ * Get server create lock. If already held then server start is happening in
+ * another client, so block until the lock is released and return -1 to
+ * retry. Ignore other errors - just continue and start the server without the
+ * lock.
+ */
+int
+client_get_lock(char *lockfile)
+{
+	int lockfd;
+
+	if ((lockfd = open(lockfile, O_WRONLY|O_CREAT, 0600)) == -1)
+		fatal("open failed");
+
+	if (lockf(lockfd, F_TLOCK, 0) == -1 && errno == EAGAIN) {
+		while (lockf(lockfd, F_LOCK, 0) == -1 && errno == EINTR)
+			/* nothing */;
+		close(lockfd);
+		return (-1);
+	}
+
+	return (lockfd);
+}
 
 /* Connect client to server. */
 int
@@ -55,7 +95,8 @@ client_connect(char *path, int start_server)
 {
 	struct sockaddr_un	sa;
 	size_t			size;
-	int			fd;
+	int			fd, lockfd;
+	char		       *lockfile;
 
 	memset(&sa, 0, sizeof sa);
 	sa.sun_family = AF_UNIX;
@@ -65,24 +106,30 @@ client_connect(char *path, int start_server)
 		return (-1);
 	}
 
+retry:
 	if ((fd = socket(AF_UNIX, SOCK_STREAM, 0)) == -1)
 		fatal("socket failed");
 
 	if (connect(fd, (struct sockaddr *) &sa, SUN_LEN(&sa)) == -1) {
+		if (errno != ECONNREFUSED && errno != ENOENT)
+			goto failed;
 		if (!start_server)
 			goto failed;
-		switch (errno) {
-		case ECONNREFUSED:
-			if (unlink(path) != 0)
-				goto failed;
-			/* FALLTHROUGH */
-		case ENOENT:
-			if ((fd = server_start()) == -1)
-				goto failed;
-			break;
-		default:
-			goto failed;
+		close(fd);
+
+		xasprintf(&lockfile, "%s.lock", path);
+		if ((lockfd = client_get_lock(lockfile)) == -1) {
+			free(lockfile);
+			goto retry;
 		}
+		if (unlink(path) != 0 && errno != ENOENT) {
+			free(lockfile);
+			close(lockfd);
+			return (-1);
+		}
+		fd = server_start(lockfd, lockfile);
+		free(lockfile);
+		close(lockfd);
 	}
 
 	setblocking(fd, 0);
@@ -93,17 +140,56 @@ failed:
 	return (-1);
 }
 
+/* Get exit string from reason number. */
+const char *
+client_exit_message(void)
+{
+	static char msg[256];
+
+	switch (client_exitreason) {
+	case CLIENT_EXIT_NONE:
+		break;
+	case CLIENT_EXIT_DETACHED:
+		if (client_exitsession != NULL) {
+			xsnprintf(msg, sizeof msg, "detached "
+			    "(from session %s)", client_exitsession);
+			return (msg);
+		}
+		return ("detached");
+	case CLIENT_EXIT_DETACHED_HUP:
+		if (client_exitsession != NULL) {
+			xsnprintf(msg, sizeof msg, "detached and SIGHUP "
+			    "(from session %s)", client_exitsession);
+			return (msg);
+		}
+		return ("detached and SIGHUP");
+	case CLIENT_EXIT_LOST_TTY:
+		return ("lost tty");
+	case CLIENT_EXIT_TERMINATED:
+		return ("terminated");
+	case CLIENT_EXIT_LOST_SERVER:
+		return ("lost server");
+	case CLIENT_EXIT_EXITED:
+		return ("exited");
+	case CLIENT_EXIT_SERVER_EXITED:
+		return ("server exited");
+	}
+	return ("unknown reason");
+}
+
 /* Client main loop. */
 int
 client_main(int argc, char **argv, int flags)
 {
 	struct cmd		*cmd;
 	struct cmd_list		*cmdlist;
-	struct msg_command_data	 cmddata;
-	int			 cmdflags, fd;
+	struct msg_command_data	*data;
+	int			 cmdflags, fd, i;
 	pid_t			 ppid;
 	enum msgtype		 msg;
 	char			*cause;
+	struct termios		 tio, saved_tio;
+	size_t			 size;
 
 	/* Set up the initial command. */
 	cmdflags = 0;
@@ -112,7 +198,7 @@ client_main(int argc, char **argv, int flags)
 		cmdflags = CMD_STARTSERVER;
 	} else if (argc == 0) {
 		msg = MSG_COMMAND;
-		cmdflags = CMD_STARTSERVER|CMD_SENDENVIRON|CMD_CANTNEST;
+		cmdflags = CMD_STARTSERVER|CMD_CANTNEST;
 	} else {
 		msg = MSG_COMMAND;
 
@@ -121,16 +207,15 @@ client_main(int argc, char **argv, int flags)
 		 * later in server) but it is necessary to get the start server
 		 * flag.
 		 */
-		if ((cmdlist = cmd_list_parse(argc, argv, &cause)) == NULL) {
-			log_warnx("%s", cause);
+		cmdlist = cmd_list_parse(argc, argv, NULL, 0, &cause);
+		if (cmdlist == NULL) {
+			fprintf(stderr, "%s\n", cause);
 			return (1);
 		}
 		cmdflags &= ~CMD_STARTSERVER;
 		TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
 			if (cmd->entry->flags & CMD_STARTSERVER)
 				cmdflags |= CMD_STARTSERVER;
-			if (cmd->entry->flags & CMD_SENDENVIRON)
-				cmdflags |= CMD_SENDENVIRON;
 			if (cmd->entry->flags & CMD_CANTNEST)
 				cmdflags |= CMD_CANTNEST;
 		}
@@ -142,16 +227,18 @@ client_main(int argc, char **argv, int flags)
 	 * if the socket path matches $TMUX, this is probably the same server.
 	 */
 	if (shell_cmd == NULL && environ_path != NULL &&
-	    cmdflags & CMD_CANTNEST && strcmp(socket_path, environ_path) == 0) {
-		log_warnx("sessions should be nested with care. "
-		    "unset $TMUX to force.");
+	    (cmdflags & CMD_CANTNEST) &&
+	    strcmp(socket_path, environ_path) == 0) {
+		fprintf(stderr, "sessions should be nested with care, "
+		    "unset $TMUX to force\n");
 		return (1);
 	}
 
 	/* Initialise the client socket and start the server. */
 	fd = client_connect(socket_path, cmdflags & CMD_STARTSERVER);
 	if (fd == -1) {
-		log_warn("failed to connect to server");
+		fprintf(stderr, "failed to connect to server: %s\n",
+		    strerror(errno));
 		return (1);
 	}
 
@@ -165,29 +252,60 @@ client_main(int argc, char **argv, int flags)
 	imsg_init(&client_ibuf, fd);
 	event_set(&client_event, fd, EV_READ, client_callback, shell_cmd);
 
+	/* Create stdin handler. */
+	setblocking(STDIN_FILENO, 0);
+	event_set(&client_stdin, STDIN_FILENO, EV_READ|EV_PERSIST,
+	    client_stdin_callback, NULL);
+	if (flags & CLIENT_CONTROLCONTROL) {
+		if (tcgetattr(STDIN_FILENO, &saved_tio) != 0) {
+			fprintf(stderr, "tcgetattr failed: %s\n",
+			    strerror(errno));
+			return (1);
+		}
+		cfmakeraw(&tio);
+		tio.c_iflag = ICRNL|IXANY;
+		tio.c_oflag = OPOST|ONLCR;
+#ifdef NOKERNINFO
+		tio.c_lflag = NOKERNINFO;
+#endif
+		tio.c_cflag = CREAD|CS8|HUPCL;
+		tio.c_cc[VMIN] = 1;
+		tio.c_cc[VTIME] = 0;
+		cfsetispeed(&tio, cfgetispeed(&saved_tio));
+		cfsetospeed(&tio, cfgetospeed(&saved_tio));
+		tcsetattr(STDIN_FILENO, TCSANOW, &tio);
+	}
+
 	/* Establish signal handlers. */
 	set_signals(client_signal);
 
-	/* Send initial environment. */
-	if (cmdflags & CMD_SENDENVIRON)
-		client_send_environ();
+	/* Send identify messages. */
 	client_send_identify(flags);
 
 	/* Send first command. */
 	if (msg == MSG_COMMAND) {
-		/* Fill in command line arguments. */
-		cmddata.pid = environ_pid;
-		cmddata.idx = environ_idx;
+		/* How big is the command? */
+		size = 0;
+		for (i = 0; i < argc; i++)
+			size += strlen(argv[i]) + 1;
+		data = xmalloc((sizeof *data) + size);
 
 		/* Prepare command for server. */
-		cmddata.argc = argc;
-		if (cmd_pack_argv(
-		    argc, argv, cmddata.argv, sizeof cmddata.argv) != 0) {
-			log_warnx("command too long");
+		data->argc = argc;
+		if (cmd_pack_argv(argc, argv, (char*)(data + 1), size) != 0) {
+			fprintf(stderr, "command too long\n");
+			free(data);
 			return (1);
 		}
+		size += sizeof *data;
 
-		client_write_server(msg, &cmddata, sizeof cmddata);
+		/* Send the command. */
+		if (client_write_server(msg, data, size) != 0) {
+			fprintf(stderr, "failed to send command\n");
+			free(data);
+			return (1);
+		}
+		free(data);
 	} else if (msg == MSG_SHELL)
 		client_write_server(msg, NULL, 0);
 
@@ -197,69 +315,81 @@ client_main(int argc, char **argv, int flags)
 
 	/* Print the exit message, if any, and exit. */
 	if (client_attached) {
-		if (client_exitmsg != NULL && !login_shell)
-			printf("[%s]\n", client_exitmsg);
+		if (client_exitreason != CLIENT_EXIT_NONE && !login_shell)
+			printf("[%s]\n", client_exit_message());
 
 		ppid = getppid();
 		if (client_exittype == MSG_DETACHKILL && ppid > 1)
 			kill(ppid, SIGHUP);
+	} else if (flags & CLIENT_CONTROLCONTROL) {
+		if (client_exitreason != CLIENT_EXIT_NONE)
+			printf("%%exit %s\n", client_exit_message());
+		else
+			printf("%%exit\n");
+		printf("\033\\");
+		tcsetattr(STDOUT_FILENO, TCSAFLUSH, &saved_tio);
 	}
+	setblocking(STDIN_FILENO, 1);
 	return (client_exitval);
 }
 
-/* Send identify message to server with the file descriptors. */
+/* Send identify messages to server. */
 void
 client_send_identify(int flags)
 {
-	struct msg_identify_data	data;
-	char			       *term;
-	int				fd;
+	const char	*s;
+	char		**ss;
+	int		 fd;
 
-	data.flags = flags;
+	client_write_one(MSG_IDENTIFY_FLAGS, -1, &flags, sizeof flags);
 
-	if (getcwd(data.cwd, sizeof data.cwd) == NULL)
-		*data.cwd = '\0';
+	if ((s = getenv("TERM")) == NULL)
+		s = "";
+	client_write_one(MSG_IDENTIFY_TERM, -1, s, strlen(s) + 1);
 
-	term = getenv("TERM");
-	if (term == NULL ||
-	    strlcpy(data.term, term, sizeof data.term) >= sizeof data.term)
-		*data.term = '\0';
+	if ((s = ttyname(STDIN_FILENO)) == NULL)
+		s = "";
+	client_write_one(MSG_IDENTIFY_TTYNAME, -1, s, strlen(s) + 1);
+
+	if ((fd = open(".", O_RDONLY)) == -1)
+		fd = open("/", O_RDONLY);
+	client_write_one(MSG_IDENTIFY_CWD, fd, NULL, 0);
 
 	if ((fd = dup(STDIN_FILENO)) == -1)
 		fatal("dup failed");
-	imsg_compose(&client_ibuf,
-	    MSG_IDENTIFY, PROTOCOL_VERSION, -1, fd, &data, sizeof data);
+	client_write_one(MSG_IDENTIFY_STDIN, fd, NULL, 0);
 
-	if ((fd = dup(STDOUT_FILENO)) == -1)
-		fatal("dup failed");
-	imsg_compose(&client_ibuf,
-	    MSG_STDOUT, PROTOCOL_VERSION, -1, fd, NULL, 0);
+	for (ss = environ; *ss != NULL; ss++)
+		client_write_one(MSG_IDENTIFY_ENVIRON, -1, *ss, strlen(*ss) + 1);
 
-	if ((fd = dup(STDERR_FILENO)) == -1)
-		fatal("dup failed");
-	imsg_compose(&client_ibuf,
-	    MSG_STDERR, PROTOCOL_VERSION, -1, fd, NULL, 0);
+	client_write_one(MSG_IDENTIFY_DONE, -1, NULL, 0);
+
+	client_update_event();
 }
 
-/* Forward entire environment to server. */
-void
-client_send_environ(void)
+/* Helper to send one message. */
+int
+client_write_one(enum msgtype type, int fd, const void *buf, size_t len)
 {
-	struct msg_environ_data	data;
-	char		      **var;
+	int	retval;
 
-	for (var = environ; *var != NULL; var++) {
-		if (strlcpy(data.var, *var, sizeof data.var) >= sizeof data.var)
-			continue;
-		client_write_server(MSG_ENVIRON, &data, sizeof data);
-	}
+	retval = imsg_compose(&client_ibuf, type, PROTOCOL_VERSION, -1, fd,
+	    (void*)buf, len);
+	if (retval != 1)
+		return (-1);
+	return (0);
 }
 
 /* Write a message to the server without a file descriptor. */
-void
-client_write_server(enum msgtype type, void *buf, size_t len)
+int
+client_write_server(enum msgtype type, const void *buf, size_t len)
 {
-	imsg_compose(&client_ibuf, type, PROTOCOL_VERSION, -1, -1, buf, len);
+	int	retval;
+
+	retval = client_write_one(type, -1, buf, len);
+	if (retval == 0)
+		client_update_event();
+	return (retval);
 }
 
 /* Update client event based on whether it needs to read or read and write. */
@@ -278,7 +408,6 @@ client_update_event(void)
 }
 
 /* Callback to handle signals in the client. */
-/* ARGSUSED */
 void
 client_signal(int sig, unused short events, unused void *data)
 {
@@ -297,12 +426,12 @@ client_signal(int sig, unused short events, unused void *data)
 	} else {
 		switch (sig) {
 		case SIGHUP:
-			client_exitmsg = "lost tty";
+			client_exitreason = CLIENT_EXIT_LOST_TTY;
 			client_exitval = 1;
 			client_write_server(MSG_EXITING, NULL, 0);
 			break;
 		case SIGTERM:
-			client_exitmsg = "terminated";
+			client_exitreason = CLIENT_EXIT_TERMINATED;
 			client_exitval = 1;
 			client_write_server(MSG_EXITING, NULL, 0);
 			break;
@@ -325,7 +454,6 @@ client_signal(int sig, unused short events, unused void *data)
 }
 
 /* Callback for client imsg read events. */
-/* ARGSUSED */
 void
 client_callback(unused int fd, short events, void *data)
 {
@@ -346,7 +474,7 @@ client_callback(unused int fd, short events, void *data)
 	}
 
 	if (events & EV_WRITE) {
-		if (msgbuf_write(&client_ibuf.w) < 0)
+		if (msgbuf_write(&client_ibuf.w) < 0 && errno != EAGAIN)
 			goto lost_server;
 	}
 
@@ -354,40 +482,74 @@ client_callback(unused int fd, short events, void *data)
 	return;
 
 lost_server:
-	client_exitmsg = "lost server";
+	client_exitreason = CLIENT_EXIT_LOST_SERVER;
 	client_exitval = 1;
 	event_loopexit(NULL);
 }
 
+/* Callback for client stdin read events. */
+void
+client_stdin_callback(unused int fd, unused short events, unused void *data1)
+{
+	struct msg_stdin_data	data;
+
+	data.size = read(STDIN_FILENO, data.data, sizeof data.data);
+	if (data.size < 0 && (errno == EINTR || errno == EAGAIN))
+		return;
+
+	client_write_server(MSG_STDIN, &data, sizeof data);
+	if (data.size <= 0)
+		event_del(&client_stdin);
+	client_update_event();
+}
+
+/* Force write to file descriptor. */
+void
+client_write(int fd, const char *data, size_t size)
+{
+	ssize_t	used;
+
+	while (size != 0) {
+		used = write(fd, data, size);
+		if (used == -1) {
+			if (errno == EINTR || errno == EAGAIN)
+				continue;
+			break;
+		}
+		data += used;
+		size -= used;
+	}
+}
+
 /* Dispatch imsgs when in wait state (before MSG_READY). */
 int
-client_dispatch_wait(void *data)
+client_dispatch_wait(void *data0)
 {
-	struct imsg		imsg;
-	ssize_t			n, datalen;
-	struct msg_shell_data	shelldata;
-	struct msg_exit_data	exitdata;
-	const char             *shellcmd = data;
-
-	if ((n = imsg_read(&client_ibuf)) == -1 || n == 0)
-		fatalx("imsg_read failed");
+	struct imsg		 imsg;
+	char			*data;
+	ssize_t			 n, datalen;
+	struct msg_stdout_data	 stdoutdata;
+	struct msg_stderr_data	 stderrdata;
+	int			 retval;
 
 	for (;;) {
 		if ((n = imsg_get(&client_ibuf, &imsg)) == -1)
 			fatalx("imsg_get failed");
 		if (n == 0)
 			return (0);
+
+		data = imsg.data;
 		datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
 
+		log_debug("got %d from server", imsg.hdr.type);
 		switch (imsg.hdr.type) {
 		case MSG_EXIT:
 		case MSG_SHUTDOWN:
-			if (datalen != sizeof exitdata) {
-				if (datalen != 0)
-					fatalx("bad MSG_EXIT size");
-			} else {
-				memcpy(&exitdata, imsg.data, sizeof exitdata);
-				client_exitval = exitdata.retcode;
+			if (datalen != sizeof retval && datalen != 0)
+				fatalx("bad MSG_EXIT size");
+			if (datalen == sizeof retval) {
+				memcpy(&retval, data, sizeof retval);
+				client_exitval = retval;
 			}
 			imsg_free(&imsg);
 			return (-1);
@@ -395,30 +557,57 @@ client_dispatch_wait(void *data)
 			if (datalen != 0)
 				fatalx("bad MSG_READY size");
 
+			event_del(&client_stdin);
 			client_attached = 1;
+			client_write_server(MSG_RESIZE, NULL, 0);
+			break;
+		case MSG_STDIN:
+			if (datalen != 0)
+				fatalx("bad MSG_STDIN size");
+
+			event_add(&client_stdin, NULL);
+			break;
+		case MSG_STDOUT:
+			if (datalen != sizeof stdoutdata)
+				fatalx("bad MSG_STDOUT size");
+			memcpy(&stdoutdata, data, sizeof stdoutdata);
+
+			client_write(STDOUT_FILENO, stdoutdata.data,
+			    stdoutdata.size);
+			break;
+		case MSG_STDERR:
+			if (datalen != sizeof stderrdata)
+				fatalx("bad MSG_STDERR size");
+			memcpy(&stderrdata, data, sizeof stderrdata);
+
+			client_write(STDERR_FILENO, stderrdata.data,
+			    stderrdata.size);
 			break;
 		case MSG_VERSION:
 			if (datalen != 0)
 				fatalx("bad MSG_VERSION size");
 
-			log_warnx("protocol version mismatch (client %u, "
-			    "server %u)", PROTOCOL_VERSION, imsg.hdr.peerid);
+			fprintf(stderr, "protocol version mismatch "
+			    "(client %u, server %u)\n", PROTOCOL_VERSION,
+			    imsg.hdr.peerid);
 			client_exitval = 1;
 
 			imsg_free(&imsg);
 			return (-1);
 		case MSG_SHELL:
-			if (datalen != sizeof shelldata)
-				fatalx("bad MSG_SHELL size");
-			memcpy(&shelldata, imsg.data, sizeof shelldata);
-			shelldata.shell[(sizeof shelldata.shell) - 1] = '\0';
+			if (datalen == 0 || data[datalen - 1] != '\0')
+				fatalx("bad MSG_SHELL string");
 
 			clear_signals(0);
-
-			shell_exec(shelldata.shell, shellcmd);
+			shell_exec(data, data0);
 			/* NOTREACHED */
-		default:
-			fatalx("unexpected message");
+		case MSG_DETACH:
+		case MSG_DETACHKILL:
+			client_write_server(MSG_EXITING, NULL, 0);
+			break;
+		case MSG_EXITED:
+			imsg_free(&imsg);
+			return (-1);
 		}
 
 		imsg_free(&imsg);
@@ -426,43 +615,44 @@ client_dispatch_wait(void *data)
 }
 
 /* Dispatch imsgs in attached state (after MSG_READY). */
-/* ARGSUSED */
 int
 client_dispatch_attached(void)
 {
-	struct imsg		imsg;
-	struct msg_lock_data	lockdata;
-	struct sigaction	sigact;
-	ssize_t			n, datalen;
+	struct imsg		 imsg;
+	struct sigaction	 sigact;
+	char			*data;
+	ssize_t			 n, datalen;
 
 	for (;;) {
 		if ((n = imsg_get(&client_ibuf, &imsg)) == -1)
 			fatalx("imsg_get failed");
 		if (n == 0)
 			return (0);
+
+		data = imsg.data;
 		datalen = imsg.hdr.len - IMSG_HEADER_SIZE;
 
-		log_debug("client got %d", imsg.hdr.type);
+		log_debug("got %d from server", imsg.hdr.type);
 		switch (imsg.hdr.type) {
-		case MSG_DETACHKILL:
 		case MSG_DETACH:
-			if (datalen != 0)
-				fatalx("bad MSG_DETACH size");
+		case MSG_DETACHKILL:
+			if (datalen == 0 || data[datalen - 1] != '\0')
+				fatalx("bad MSG_DETACH string");
 
+			client_exitsession = xstrdup(data);
 			client_exittype = imsg.hdr.type;
 			if (imsg.hdr.type == MSG_DETACHKILL)
-				client_exitmsg = "detached and SIGHUP";
+				client_exitreason = CLIENT_EXIT_DETACHED_HUP;
 			else
-				client_exitmsg = "detached";
+				client_exitreason = CLIENT_EXIT_DETACHED;
 			client_write_server(MSG_EXITING, NULL, 0);
 			break;
 		case MSG_EXIT:
-			if (datalen != 0 &&
-			    datalen != sizeof (struct msg_exit_data))
+			if (datalen != 0 && datalen != sizeof (int))
 				fatalx("bad MSG_EXIT size");
 
 			client_write_server(MSG_EXITING, NULL, 0);
-			client_exitmsg = "exited";
+			client_exitreason = CLIENT_EXIT_EXITED;
 			break;
 		case MSG_EXITED:
 			if (datalen != 0)
@@ -475,7 +665,7 @@ client_dispatch_attached(void)
 				fatalx("bad MSG_SHUTDOWN size");
 
 			client_write_server(MSG_EXITING, NULL, 0);
-			client_exitmsg = "server exited";
+			client_exitreason = CLIENT_EXIT_SERVER_EXITED;
 			client_exitval = 1;
 			break;
 		case MSG_SUSPEND:
@@ -491,16 +681,12 @@ client_dispatch_attached(void)
 			kill(getpid(), SIGTSTP);
 			break;
 		case MSG_LOCK:
-			if (datalen != sizeof lockdata)
-				fatalx("bad MSG_LOCK size");
-			memcpy(&lockdata, imsg.data, sizeof lockdata);
+			if (datalen == 0 || data[datalen - 1] != '\0')
+				fatalx("bad MSG_LOCK string");
 
-			lockdata.cmd[(sizeof lockdata.cmd) - 1] = '\0';
-			system(lockdata.cmd);
+			system(data);
 			client_write_server(MSG_UNLOCK, NULL, 0);
 			break;
-		default:
-			fatalx("unexpected message");
 		}
 
 		imsg_free(&imsg);

clock.c

@@ -103,13 +103,20 @@ clock_draw(struct screen_write_ctx *ctx, int colour, int style)
 	struct grid_cell	 gc;
 	char			 tim[64], *ptr;
 	time_t			 t;
+	struct tm		*tm;
 	u_int			 i, j, x, y, idx;
 
 	t = time(NULL);
-	if (style == 0)
-		strftime(tim, sizeof tim, "%l:%M %p", localtime(&t));
-	else
-		strftime(tim, sizeof tim, "%H:%M", localtime(&t));
+	tm = localtime(&t);
+	if (style == 0) {
+		strftime(tim, sizeof tim, "%l:%M ", localtime(&t));
+		if (tm->tm_hour >= 12)
+			strlcat(tim, "PM", sizeof tim);
+		else
+			strlcat(tim, "AM", sizeof tim);
+	} else
+		strftime(tim, sizeof tim, "%H:%M", tm);
+
 
 	screen_write_clearscreen(ctx);
 

cmd-attach-session.c

@@ -18,47 +18,77 @@
 
 #include <sys/types.h>
 
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
 #include "tmux.h"
 
 /*
  * Attach existing session to the current terminal.
  */
 
-int	cmd_attach_session_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_attach_session_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_attach_session_entry = {
 	"attach-session", "attach",
-	"drt:", 0, 0,
-	"[-dr] " CMD_TARGET_SESSION_USAGE,
-	CMD_CANTNEST|CMD_STARTSERVER|CMD_SENDENVIRON,
-	NULL,
+	"c:drt:", 0, 0,
+	"[-dr] [-c working-directory] " CMD_TARGET_SESSION_USAGE,
+	CMD_CANTNEST|CMD_STARTSERVER,
 	NULL,
 	cmd_attach_session_exec
 };
 
-int
-cmd_attach_session_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_attach_session(struct cmd_q *cmdq, const char *tflag, int dflag, int rflag,
+    const char *cflag)
 {
-	struct args	*args = self->args;
-	struct session	*s;
-	struct client	*c;
-	const char	*update;
-	char		*overrides, *cause;
-	u_int		 i;
+	struct session		*s;
+	struct client		*c;
+	struct winlink		*wl = NULL;
+	struct window		*w = NULL;
+	struct window_pane	*wp = NULL;
+	const char		*update;
+	char			*cause;
+	u_int			 i;
+	int			 fd;
+	struct format_tree	*ft;
+	char			*cp;
 
 	if (RB_EMPTY(&sessions)) {
-		ctx->error(ctx, "no sessions");
-		return (-1);
+		cmdq_error(cmdq, "no sessions");
+		return (CMD_RETURN_ERROR);
 	}
 
-	if ((s = cmd_find_session(ctx, args_get(args, 't'), 1)) == NULL)
-		return (-1);
+	if (tflag == NULL) {
+		if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
+			return (CMD_RETURN_ERROR);
+	} else if (tflag[strcspn(tflag, ":.")] != '\0') {
+		if ((wl = cmd_find_pane(cmdq, tflag, &s, &wp)) == NULL)
+			return (CMD_RETURN_ERROR);
+	} else {
+		if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
+			return (CMD_RETURN_ERROR);
+		w = cmd_lookup_windowid(tflag);
+		if (w == NULL && (wp = cmd_lookup_paneid(tflag)) != NULL)
+			w = wp->window;
+		if (w != NULL)
+			wl = winlink_find_by_window(&s->windows, w);
+	}
 
-	if (ctx->cmdclient == NULL && ctx->curclient == NULL)
-		return (0);
+	if (cmdq->client == NULL)
+		return (CMD_RETURN_NORMAL);
 
-	if (ctx->cmdclient == NULL) {
-		if (args_has(self->args, 'd')) {
+	if (wl != NULL) {
+		if (wp != NULL)
+			window_set_active_pane(wp->window, wp);
+		session_set_current(s, wl);
+	}
+
+	if (cmdq->client->session != NULL) {
+		if (dflag) {
 			/*
 			 * Can't use server_write_session in case attaching to
 			 * the same session as currently attached to.
@@ -67,48 +97,99 @@ cmd_attach_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 				c = ARRAY_ITEM(&clients, i);
 				if (c == NULL || c->session != s)
 					continue;
-				if (c == ctx->curclient)
+				if (c == cmdq->client)
 					continue;
-				server_write_client(c, MSG_DETACH, NULL, 0);
+				server_write_client(c, MSG_DETACH,
+				    c->session->name,
+				    strlen(c->session->name) + 1);
 			}
 		}
 
-		ctx->curclient->session = s;
+		if (cflag != NULL) {
+			ft = format_create();
+			if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+				format_client(ft, c);
+			format_session(ft, s);
+			format_winlink(ft, s, s->curw);
+			format_window_pane(ft, s->curw->window->active);
+			cp = format_expand(ft, cflag);
+			format_free(ft);
+
+			fd = open(cp, O_RDONLY|O_DIRECTORY);
+			free(cp);
+			if (fd == -1) {
+				cmdq_error(cmdq, "bad working directory: %s",
+				    strerror(errno));
+				return (CMD_RETURN_ERROR);
+			}
+			close(s->cwd);
+			s->cwd = fd;
+		}
+
+		cmdq->client->session = s;
+		notify_attached_session_changed(cmdq->client);
 		session_update_activity(s);
-		server_redraw_client(ctx->curclient);
+		server_redraw_client(cmdq->client);
 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
 	} else {
-		if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
-			ctx->error(ctx, "not a terminal");
-			return (-1);
+		if (server_client_open(cmdq->client, s, &cause) != 0) {
+			cmdq_error(cmdq, "open terminal failed: %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 
-		overrides =
-		    options_get_string(&s->options, "terminal-overrides");
-		if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
-			ctx->error(ctx, "terminal open failed: %s", cause);
-			xfree(cause);
-			return (-1);
+		if (cflag != NULL) {
+			ft = format_create();
+			if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+				format_client(ft, c);
+			format_session(ft, s);
+			format_winlink(ft, s, s->curw);
+			format_window_pane(ft, s->curw->window->active);
+			cp = format_expand(ft, cflag);
+			format_free(ft);
+
+			fd = open(cp, O_RDONLY|O_DIRECTORY);
+			free(cp);
+			if (fd == -1) {
+				cmdq_error(cmdq, "bad working directory: %s",
+				    strerror(errno));
+				return (CMD_RETURN_ERROR);
+			}
+			close(s->cwd);
+			s->cwd = fd;
 		}
 
-		if (args_has(self->args, 'r'))
-			ctx->cmdclient->flags |= CLIENT_READONLY;
+		if (rflag)
+			cmdq->client->flags |= CLIENT_READONLY;
 
-		if (args_has(self->args, 'd'))
-			server_write_session(s, MSG_DETACH, NULL, 0);
-
-		ctx->cmdclient->session = s;
-		session_update_activity(s);
-		server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
+		if (dflag) {
+			server_write_session(s, MSG_DETACH, s->name,
+			    strlen(s->name) + 1);
+		}
 
 		update = options_get_string(&s->options, "update-environment");
-		environ_update(update, &ctx->cmdclient->environ, &s->environ);
+		environ_update(update, &cmdq->client->environ, &s->environ);
 
-		server_redraw_client(ctx->cmdclient);
+		cmdq->client->session = s;
+		notify_attached_session_changed(cmdq->client);
+		session_update_activity(s);
+		server_redraw_client(cmdq->client);
 		s->curw->flags &= ~WINLINK_ALERTFLAGS;
+
+		server_write_ready(cmdq->client);
+		cmdq->client_exit = 0;
 	}
 	recalculate_sizes();
 	server_update_socket();
 
-	return (1);	/* 1 means don't tell command client to exit */
+	return (CMD_RETURN_NORMAL);
+}
+
+enum cmd_retval
+cmd_attach_session_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args	*args = self->args;
+
+	return (cmd_attach_session(cmdq, args_get(args, 't'),
+	    args_has(args, 'd'), args_has(args, 'r'), args_get(args, 'c')));
 }

cmd-bind-key.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -26,10 +27,9 @@
  * Bind a key to a command, this recurses through cmd_*.
  */
 
-int	cmd_bind_key_check(struct args *);
-int	cmd_bind_key_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_bind_key_exec(struct cmd *, struct cmd_q *);
 
-int	cmd_bind_key_table(struct cmd *, struct cmd_ctx *, int);
+enum cmd_retval	 cmd_bind_key_table(struct cmd *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_bind_key_entry = {
 	"bind-key", "bind",
@@ -37,84 +37,97 @@ const struct cmd_entry cmd_bind_key_entry = {
 	"[-cnr] [-t key-table] key command [arguments]",
 	0,
 	NULL,
-	cmd_bind_key_check,
 	cmd_bind_key_exec
 };
 
-int
-cmd_bind_key_check(struct args *args)
-{
-	if (args_has(args, 't')) {
-		if (args->argc != 2)
-			return (-1);
-	} else {
-		if (args->argc < 2)
-			return (-1);
-	}
-	return (0);
-}
-
-int
-cmd_bind_key_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_bind_key_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	char		*cause;
 	struct cmd_list	*cmdlist;
 	int		 key;
 
+	if (args_has(args, 't')) {
+		if (args->argc != 2 && args->argc != 3) {
+			cmdq_error(cmdq, "not enough arguments");
+			return (CMD_RETURN_ERROR);
+		}
+	} else {
+		if (args->argc < 2) {
+			cmdq_error(cmdq, "not enough arguments");
+			return (CMD_RETURN_ERROR);
+		}
+	}
+
 	key = key_string_lookup_string(args->argv[0]);
 	if (key == KEYC_NONE) {
-		ctx->error(ctx, "unknown key: %s", args->argv[0]);
-		return (-1);
+		cmdq_error(cmdq, "unknown key: %s", args->argv[0]);
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (args_has(args, 't'))
-		return (cmd_bind_key_table(self, ctx, key));
+		return (cmd_bind_key_table(self, cmdq, key));
 
-	cmdlist = cmd_list_parse(args->argc - 1, args->argv + 1, &cause);
+	cmdlist = cmd_list_parse(args->argc - 1, args->argv + 1, NULL, 0,
+	    &cause);
 	if (cmdlist == NULL) {
-		ctx->error(ctx, "%s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "%s", cause);
+		free(cause);
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (!args_has(args, 'n'))
 	    key |= KEYC_PREFIX;
 	key_bindings_add(key, args_has(args, 'r'), cmdlist);
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
-int
-cmd_bind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
+enum cmd_retval
+cmd_bind_key_table(struct cmd *self, struct cmd_q *cmdq, int key)
 {
 	struct args			*args = self->args;
 	const char			*tablename;
 	const struct mode_key_table	*mtab;
 	struct mode_key_binding		*mbind, mtmp;
 	enum mode_key_cmd		 cmd;
+	const char			*arg;
 
 	tablename = args_get(args, 't');
 	if ((mtab = mode_key_findtable(tablename)) == NULL) {
-		ctx->error(ctx, "unknown key table: %s", tablename);
-		return (-1);
+		cmdq_error(cmdq, "unknown key table: %s", tablename);
+		return (CMD_RETURN_ERROR);
 	}
 
 	cmd = mode_key_fromstring(mtab->cmdstr, args->argv[1]);
 	if (cmd == MODEKEY_NONE) {
-		ctx->error(ctx, "unknown command: %s", args->argv[1]);
-		return (-1);
+		cmdq_error(cmdq, "unknown command: %s", args->argv[1]);
+		return (CMD_RETURN_ERROR);
+	}
+
+	if (cmd != MODEKEYCOPY_COPYPIPE) {
+		if (args->argc != 2) {
+			cmdq_error(cmdq, "no argument allowed");
+			return (CMD_RETURN_ERROR);
+		}
+		arg = NULL;
+	} else {
+		if (args->argc != 3) {
+			cmdq_error(cmdq, "no argument given");
+			return (CMD_RETURN_ERROR);
+		}
+		arg = args->argv[2];
 	}
 
 	mtmp.key = key;
 	mtmp.mode = !!args_has(args, 'c');
-	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
-		mbind->cmd = cmd;
-		return (0);
+	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) == NULL) {
+		mbind = xmalloc(sizeof *mbind);
+		mbind->key = mtmp.key;
+		mbind->mode = mtmp.mode;
+		RB_INSERT(mode_key_tree, mtab->tree, mbind);
 	}
-	mbind = xmalloc(sizeof *mbind);
-	mbind->key = mtmp.key;
-	mbind->mode = mtmp.mode;
 	mbind->cmd = cmd;
-	RB_INSERT(mode_key_tree, mtab->tree, mbind);
-	return (0);
+	mbind->arg = arg != NULL ? xstrdup(arg) : NULL;
+	return (CMD_RETURN_NORMAL);
 }

cmd-break-pane.c

@@ -26,38 +26,44 @@
  * Break pane off into a window.
  */
 
-int	cmd_break_pane_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_break_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_break_pane_entry = {
 	"break-pane", "breakp",
-	"dt:", 0, 0,
-	"[-d] " CMD_TARGET_PANE_USAGE,
+	"dPF:t:", 0, 0,
+	"[-dP] [-F format] " CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_break_pane_exec
 };
 
-int
-cmd_break_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_break_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
 	struct session		*s;
 	struct window_pane	*wp;
 	struct window		*w;
+	char			*name;
 	char			*cause;
 	int			 base_idx;
+	struct client		*c;
+	struct format_tree	*ft;
+	const char		*template;
+	char			*cp;
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (window_count_panes(wl->window) == 1) {
-		ctx->error(ctx, "can't break with only one pane");
-		return (-1);
+		cmdq_error(cmdq, "can't break with only one pane");
+		return (CMD_RETURN_ERROR);
 	}
 
 	w = wl->window;
+	server_unzoom_window(w);
+
 	TAILQ_REMOVE(&w->panes, wp, entry);
 	if (wp == w->active) {
 		w->active = w->last;
@@ -74,8 +80,10 @@ cmd_break_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	w = wp->window = window_create1(s->sx, s->sy);
 	TAILQ_INSERT_HEAD(&w->panes, wp, entry);
 	w->active = wp;
-	w->name = default_window_name(w);
-	layout_init(w);
+	name = default_window_name(w);
+	window_set_name(w, name);
+	free(name);
+	layout_init(w, wp);
 
 	base_idx = options_get_number(&s->options, "base-index");
 	wl = session_attach(s, w, -1 - base_idx, &cause); /* can't fail */
@@ -85,5 +93,22 @@ cmd_break_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	server_redraw_session(s);
 	server_status_session_group(s);
 
-	return (0);
+	if (args_has(args, 'P')) {
+		if ((template = args_get(args, 'F')) == NULL)
+			template = BREAK_PANE_TEMPLATE;
+
+		ft = format_create();
+		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c);
+		format_session(ft, s);
+		format_winlink(ft, s, wl);
+		format_window_pane(ft, wp);
+
+		cp = format_expand(ft, template);
+		cmdq_print(cmdq, "%s", cp);
+		free(cp);
+
+		format_free(ft);
+	}
+	return (CMD_RETURN_NORMAL);
 }

cmd-capture-pane.c

@@ -24,45 +24,95 @@
 #include "tmux.h"
 
 /*
- * Write the entire contents of a pane to a buffer.
+ * Write the entire contents of a pane to a buffer or stdout.
  */
 
-int	cmd_capture_pane_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_capture_pane_exec(struct cmd *, struct cmd_q *);
+
+char		*cmd_capture_pane_append(char *, size_t *, char *, size_t);
+char		*cmd_capture_pane_pending(struct args *, struct window_pane *,
+		     size_t *);
+char		*cmd_capture_pane_history(struct args *, struct cmd_q *,
+		     struct window_pane *, size_t *);
 
 const struct cmd_entry cmd_capture_pane_entry = {
 	"capture-pane", "capturep",
-	"b:E:S:t:", 0, 0,
-	"[-b buffer-index] [-E end-line] [-S start-line] [-t target-pane]",
+	"ab:CeE:JpPqS:t:", 0, 0,
+	"[-aCeJpPq] [-b buffer-index] [-E end-line] [-S start-line]"
+	CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_capture_pane_exec
 };
 
-int
-cmd_capture_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+char *
+cmd_capture_pane_append(char *buf, size_t *len, char *line, size_t linelen)
+{
+	buf = xrealloc(buf, 1, *len + linelen + 1);
+	memcpy(buf + *len, line, linelen);
+	*len += linelen;
+	return (buf);
+}
+
+char *
+cmd_capture_pane_pending(struct args *args, struct window_pane *wp,
+    size_t *len)
+{
+	char	*buf, *line, tmp[5];
+	size_t	 linelen;
+	u_int	 i;
+
+	if (wp->ictx.since_ground == NULL)
+		return (xstrdup(""));
+
+	line = EVBUFFER_DATA(wp->ictx.since_ground);
+	linelen = EVBUFFER_LENGTH(wp->ictx.since_ground);
+
+	buf = xstrdup("");
+	if (args_has(args, 'C')) {
+		for (i = 0; i < linelen; i++) {
+			if (line[i] >= ' ') {
+				tmp[0] = line[i];
+				tmp[1] = '\0';
+			} else
+				xsnprintf(tmp, sizeof tmp, "\\%03o", line[i]);
+			buf = cmd_capture_pane_append(buf, len, tmp,
+			    strlen(tmp));
+		}
+	} else
+		buf = cmd_capture_pane_append(buf, len, line, linelen);
+	return (buf);
+}
+
+char *
+cmd_capture_pane_history(struct args *args, struct cmd_q *cmdq,
+    struct window_pane *wp, size_t *len)
 {
-	struct args		*args = self->args;
-	struct window_pane	*wp;
-	char 			*buf, *line, *cause;
-	struct screen		*s;
 	struct grid		*gd;
-	int			 buffer, n;
-	u_int			 i, limit, top, bottom, tmp;
-	size_t         		 len, linelen;
+	const struct grid_line	*gl;
+	struct grid_cell	*gc = NULL;
+	int			 n, with_codes, escape_c0, join_lines;
+	u_int			 i, sx, top, bottom, tmp;
+	char			*cause, *buf, *line;
+	size_t			 linelen;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
-		return (-1);
-	s = &wp->base;
-	gd = s->grid;
-
-	buf = NULL;
-	len = 0;
+	sx = screen_size_x(&wp->base);
+	if (args_has(args, 'a')) {
+		gd = wp->saved_grid;
+		if (gd == NULL) {
+			if (!args_has(args, 'q')) {
+				cmdq_error(cmdq, "no alternate screen");
+				return (NULL);
+			}
+			return (xstrdup(""));
+		}
+	} else
+		gd = wp->base.grid;
 
 	n = args_strtonum(args, 'S', INT_MIN, SHRT_MAX, &cause);
 	if (cause != NULL) {
 		top = gd->hsize;
-		xfree(cause);
+		free(cause);
 	} else if (n < 0 && (u_int) -n > gd->hsize)
 		top = 0;
 	else
@@ -73,7 +123,7 @@ cmd_capture_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	n = args_strtonum(args, 'E', INT_MIN, SHRT_MAX, &cause);
 	if (cause != NULL) {
 		bottom = gd->hsize + gd->sy - 1;
-		xfree(cause);
+		free(cause);
 	} else if (n < 0 && (u_int) -n > gd->hsize)
 		bottom = 0;
 	else
@@ -87,38 +137,81 @@ cmd_capture_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 		top = tmp;
 	}
 
+	with_codes = args_has(args, 'e');
+	escape_c0 = args_has(args, 'C');
+	join_lines = args_has(args, 'J');
+
+	buf = NULL;
 	for (i = top; i <= bottom; i++) {
-	       line = grid_string_cells(s->grid, 0, i, screen_size_x(s));
-	       linelen = strlen(line);
+		line = grid_string_cells(gd, 0, i, sx, &gc, with_codes,
+		    escape_c0, !join_lines);
+		linelen = strlen(line);
 
-	       buf = xrealloc(buf, 1, len + linelen + 1);
-	       memcpy(buf + len, line, linelen);
-	       len += linelen;
-	       buf[len++] = '\n';
+		buf = cmd_capture_pane_append(buf, len, line, linelen);
 
-	       xfree(line);
+		gl = grid_peek_line(gd, i);
+		if (!join_lines || !(gl->flags & GRID_LINE_WRAPPED))
+			buf[(*len)++] = '\n';
+
+		free(line);
 	}
-
-	limit = options_get_number(&global_options, "buffer-limit");
-
-	if (!args_has(args, 'b')) {
-		paste_add(&global_buffers, buf, len, limit);
-		return (0);
-	}
-
-	buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
-	if (cause != NULL) {
-		ctx->error(ctx, "buffer %s", cause);
-		xfree(buf);
-		xfree(cause);
-		return (-1);
-	}
-
-	if (paste_replace(&global_buffers, buffer, buf, len) != 0) {
-		ctx->error(ctx, "no buffer %d", buffer);
-		xfree(buf);
-		return (-1);
-	}
-
-	return (0);
+	return (buf);
+}
+
+enum cmd_retval
+cmd_capture_pane_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args		*args = self->args;
+	struct client		*c;
+	struct window_pane	*wp;
+	char			*buf, *cause;
+	int			 buffer;
+	u_int			 limit;
+	size_t			 len;
+
+	if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	len = 0;
+	if (args_has(args, 'P'))
+		buf = cmd_capture_pane_pending(args, wp, &len);
+	else
+		buf = cmd_capture_pane_history(args, cmdq, wp, &len);
+	if (buf == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if (args_has(args, 'p')) {
+		c = cmdq->client;
+		if (c == NULL ||
+		    (c->session != NULL && !(c->flags & CLIENT_CONTROL))) {
+			cmdq_error(cmdq, "can't write to stdout");
+			return (CMD_RETURN_ERROR);
+		}
+		evbuffer_add(c->stdout_data, buf, len);
+		if (args_has(args, 'P') && len > 0)
+		    evbuffer_add(c->stdout_data, "\n", 1);
+		server_push_stdout(c);
+	} else {
+		limit = options_get_number(&global_options, "buffer-limit");
+		if (!args_has(args, 'b')) {
+			paste_add(&global_buffers, buf, len, limit);
+			return (CMD_RETURN_NORMAL);
+		}
+
+		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
+		if (cause != NULL) {
+			cmdq_error(cmdq, "buffer %s", cause);
+			free(buf);
+			free(cause);
+			return (CMD_RETURN_ERROR);
+		}
+
+		if (paste_replace(&global_buffers, buffer, buf, len) != 0) {
+			cmdq_error(cmdq, "no buffer %d", buffer);
+			free(buf);
+			return (CMD_RETURN_ERROR);
+		}
+	}
+
+	return (CMD_RETURN_NORMAL);
 }

cmd-choose-buffer.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <ctype.h>
+#include <stdlib.h>
 
 #include "tmux.h"
 
@@ -26,118 +27,69 @@
  * Enter choice mode to choose a buffer.
  */
 
-int	cmd_choose_buffer_exec(struct cmd *, struct cmd_ctx *);
-
-void	cmd_choose_buffer_callback(void *, int);
-void	cmd_choose_buffer_free(void *);
+enum cmd_retval	 cmd_choose_buffer_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_choose_buffer_entry = {
 	"choose-buffer", NULL,
-	"t:", 0, 1,
-	CMD_TARGET_WINDOW_USAGE " [template]",
+	"F:t:", 0, 1,
+	CMD_TARGET_WINDOW_USAGE " [-F format] [template]",
 	0,
 	NULL,
-	NULL,
 	cmd_choose_buffer_exec
 };
 
-struct cmd_choose_buffer_data {
-	struct client   *client;
-	char            *template;
-};
-
-int
-cmd_choose_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_choose_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
-	struct cmd_choose_buffer_data	*cdata;
+	struct client			*c;
+	struct window_choose_data	*cdata;
 	struct winlink			*wl;
 	struct paste_buffer		*pb;
+	char				*action, *action_data;
+	const char			*template;
 	u_int				 idx;
-	char				*tmp;
 
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
+	if ((c = cmd_current_client(cmdq)) == NULL) {
+		cmdq_error(cmdq, "no client available");
+		return (CMD_RETURN_ERROR);
 	}
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	if ((template = args_get(args, 'F')) == NULL)
+		template = CHOOSE_BUFFER_TEMPLATE;
+
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (paste_get_top(&global_buffers) == NULL)
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
-		return (0);
+		return (CMD_RETURN_NORMAL);
+
+	if (args->argc != 0)
+		action = xstrdup(args->argv[0]);
+	else
+		action = xstrdup("paste-buffer -b '%%'");
 
 	idx = 0;
 	while ((pb = paste_walk_stack(&global_buffers, &idx)) != NULL) {
-		tmp = paste_print(pb, 50);
-		window_choose_add(wl->window->active, idx - 1,
-		    "%u: %zu bytes: \"%s\"", idx - 1, pb->size, tmp);
-		xfree(tmp);
+		cdata = window_choose_data_create(TREE_OTHER, c, c->session);
+		cdata->idx = idx - 1;
+
+		cdata->ft_template = xstrdup(template);
+		format_add(cdata->ft, "line", "%u", idx - 1);
+		format_paste_buffer(cdata->ft, pb);
+
+		xasprintf(&action_data, "%u", idx - 1);
+		cdata->command = cmd_template_replace(action, action_data, 1);
+		free(action_data);
+
+		window_choose_add(wl->window->active, cdata);
 	}
+	free(action);
 
-	cdata = xmalloc(sizeof *cdata);
-	if (args->argc != 0)
-		cdata->template = xstrdup(args->argv[0]);
-	else
-		cdata->template = xstrdup("paste-buffer -b '%%'");
-	cdata->client = ctx->curclient;
-	cdata->client->references++;
+	window_choose_ready(wl->window->active, 0, NULL);
 
-	window_choose_ready(wl->window->active,
-	    0, cmd_choose_buffer_callback, cmd_choose_buffer_free, cdata);
-
-	return (0);
-}
-
-void
-cmd_choose_buffer_callback(void *data, int idx)
-{
-	struct cmd_choose_buffer_data	*cdata = data;
-	struct cmd_list			*cmdlist;
-	struct cmd_ctx			 ctx;
-	char				*template, *cause, tmp[16];
-
-	if (idx == -1)
-		return;
-	if (cdata->client->flags & CLIENT_DEAD)
-		return;
-
-	xsnprintf(tmp, sizeof tmp, "%u", idx);
-	template = cmd_template_replace(cdata->template, tmp, 1);
-
-	if (cmd_string_parse(template, &cmdlist, &cause) != 0) {
-		if (cause != NULL) {
-			*cause = toupper((u_char) *cause);
-			status_message_set(cdata->client, "%s", cause);
-			xfree(cause);
-		}
-		xfree(template);
-		return;
-	}
-	xfree(template);
-
-	ctx.msgdata = NULL;
-	ctx.curclient = cdata->client;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
-	cmd_list_free(cmdlist);
-}
-
-void
-cmd_choose_buffer_free(void *data)
-{
-	struct cmd_choose_buffer_data	*cdata = data;
-
-	cdata->client->references--;
-	xfree(cdata->template);
-	xfree(cdata);
+	return (CMD_RETURN_NORMAL);
 }

cmd-choose-client.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <ctype.h>
+#include <stdlib.h>
 
 #include "tmux.h"
 
@@ -26,128 +27,98 @@
  * Enter choice mode to choose a client.
  */
 
-int	cmd_choose_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_choose_client_exec(struct cmd *, struct cmd_q *);
 
-void	cmd_choose_client_callback(void *, int);
-void	cmd_choose_client_free(void *);
+void	cmd_choose_client_callback(struct window_choose_data *);
 
 const struct cmd_entry cmd_choose_client_entry = {
 	"choose-client", NULL,
-	"t:", 0, 1,
-	CMD_TARGET_WINDOW_USAGE " [template]",
+	"F:t:", 0, 1,
+	CMD_TARGET_WINDOW_USAGE " [-F format] [template]",
 	0,
 	NULL,
-	NULL,
 	cmd_choose_client_exec
 };
 
 struct cmd_choose_client_data {
 	struct client	*client;
-	char   		*template;
 };
 
-int
-cmd_choose_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_choose_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
-	struct cmd_choose_client_data	*cdata;
-	struct winlink			*wl;
 	struct client			*c;
+	struct client			*c1;
+	struct window_choose_data	*cdata;
+	struct winlink			*wl;
+	const char			*template;
+	char				*action;
 	u_int			 	 i, idx, cur;
 
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
+	if ((c = cmd_current_client(cmdq)) == NULL) {
+		cmdq_error(cmdq, "no client available");
+		return (CMD_RETURN_ERROR);
 	}
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
-		return (0);
+		return (CMD_RETURN_NORMAL);
+
+	if ((template = args_get(args, 'F')) == NULL)
+		template = CHOOSE_CLIENT_TEMPLATE;
+
+	if (args->argc != 0)
+		action = xstrdup(args->argv[0]);
+	else
+		action = xstrdup("detach-client -t '%%'");
 
 	cur = idx = 0;
 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
-		c = ARRAY_ITEM(&clients, i);
-		if (c == NULL || c->session == NULL)
+		c1 = ARRAY_ITEM(&clients, i);
+		if (c1 == NULL || c1->session == NULL || c1->tty.path == NULL)
 			continue;
-		if (c == ctx->curclient)
+		if (c1 == cmdq->client)
 			cur = idx;
 		idx++;
 
-		window_choose_add(wl->window->active, i,
-		    "%s: %s [%ux%u %s]%s%s", c->tty.path,
-		    c->session->name, c->tty.sx, c->tty.sy,
-		    c->tty.termname,
-		    c->tty.flags & TTY_UTF8 ? " (utf8)" : "",
-		    c->flags & CLIENT_READONLY ? " (ro)" : "");
+		cdata = window_choose_data_create(TREE_OTHER, c, c->session);
+		cdata->idx = i;
+
+		cdata->ft_template = xstrdup(template);
+		format_add(cdata->ft, "line", "%u", i);
+		format_session(cdata->ft, c1->session);
+		format_client(cdata->ft, c1);
+
+		cdata->command = cmd_template_replace(action, c1->tty.path, 1);
+
+		window_choose_add(wl->window->active, cdata);
 	}
+	free(action);
 
-	cdata = xmalloc(sizeof *cdata);
-	if (args->argc != 0)
-		cdata->template = xstrdup(args->argv[0]);
-	else
-		cdata->template = xstrdup("detach-client -t '%%'");
-	cdata->client = ctx->curclient;
-	cdata->client->references++;
+	window_choose_ready(wl->window->active, cur,
+	    cmd_choose_client_callback);
 
-	window_choose_ready(wl->window->active,
-	    cur, cmd_choose_client_callback, cmd_choose_client_free, cdata);
-
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
 void
-cmd_choose_client_callback(void *data, int idx)
+cmd_choose_client_callback(struct window_choose_data *cdata)
 {
-	struct cmd_choose_client_data	*cdata = data;
-	struct client  			*c;
-	struct cmd_list			*cmdlist;
-	struct cmd_ctx			 ctx;
-	char				*template, *cause;
+	struct client  	*c;
 
-	if (idx == -1)
+	if (cdata == NULL)
 		return;
-	if (cdata->client->flags & CLIENT_DEAD)
+	if (cdata->start_client->flags & CLIENT_DEAD)
 		return;
 
-	if ((u_int) idx > ARRAY_LENGTH(&clients) - 1)
+	if (cdata->idx > ARRAY_LENGTH(&clients) - 1)
 		return;
-	c = ARRAY_ITEM(&clients, idx);
+	c = ARRAY_ITEM(&clients, cdata->idx);
 	if (c == NULL || c->session == NULL)
 		return;
-	template = cmd_template_replace(cdata->template, c->tty.path, 1);
 
-	if (cmd_string_parse(template, &cmdlist, &cause) != 0) {
-		if (cause != NULL) {
-			*cause = toupper((u_char) *cause);
-			status_message_set(c, "%s", cause);
-			xfree(cause);
-		}
-		xfree(template);
-		return;
-	}
-	xfree(template);
-
-	ctx.msgdata = NULL;
-	ctx.curclient = cdata->client;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
-	cmd_list_free(cmdlist);
-}
-
-void
-cmd_choose_client_free(void *data)
-{
-	struct cmd_choose_client_data	*cdata = data;
-
-	cdata->client->references--;
-	xfree(cdata->template);
-	xfree(cdata);
+	window_choose_data_run(cdata);
 }

cmd-choose-list.c

@@ -0,0 +1,97 @@
+/* $Id$ */
+
+/*
+ * Copyright (c) 2012 Thomas Adam <thomas@xteddy.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+
+#include <string.h>
+
+#include "tmux.h"
+
+#define CMD_CHOOSE_LIST_DEFAULT_TEMPLATE "run-shell '%%'"
+
+/*
+ * Enter choose mode to choose a custom list.
+ */
+
+enum cmd_retval cmd_choose_list_exec(struct cmd *, struct cmd_q *);
+
+const struct cmd_entry cmd_choose_list_entry = {
+	"choose-list", NULL,
+	"l:t:", 0, 1,
+	"[-l items] " CMD_TARGET_WINDOW_USAGE "[template]",
+	0,
+	NULL,
+	cmd_choose_list_exec
+};
+
+enum cmd_retval
+cmd_choose_list_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args			*args = self->args;
+	struct client			*c;
+	struct winlink			*wl;
+	const char			*list1;
+	char				*template, *item, *copy, *list;
+	u_int				 idx;
+
+	if ((c = cmd_current_client(cmdq)) == NULL) {
+		cmdq_error(cmdq, "no client available");
+		return (CMD_RETURN_ERROR);
+	}
+
+	if ((list1 = args_get(args, 'l')) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
+		return (CMD_RETURN_NORMAL);
+
+	if (args->argc != 0)
+		template = xstrdup(args->argv[0]);
+	else
+		template = xstrdup(CMD_CHOOSE_LIST_DEFAULT_TEMPLATE);
+
+	copy = list = xstrdup(list1);
+	idx = 0;
+	while ((item = strsep(&list, ",")) != NULL)
+	{
+		if (*item == '\0') /* no empty entries */
+			continue;
+		window_choose_add_item(wl->window->active, c, wl, item,
+		    template, idx);
+		idx++;
+	}
+	free(copy);
+
+	if (idx == 0) {
+		free(template);
+		window_pane_reset_mode(wl->window->active);
+		return (CMD_RETURN_ERROR);
+	}
+
+	window_choose_ready(wl->window->active, 0, NULL);
+
+	free(template);
+
+	return (CMD_RETURN_NORMAL);
+}

cmd-choose-session.c

@@ -1,156 +0,0 @@
-/* $Id$ */
-
-/*
- * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
- * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/types.h>
-
-#include <ctype.h>
-
-#include "tmux.h"
-
-/*
- * Enter choice mode to choose a session.
- */
-
-int	cmd_choose_session_exec(struct cmd *, struct cmd_ctx *);
-
-void	cmd_choose_session_callback(void *, int);
-void	cmd_choose_session_free(void *);
-
-const struct cmd_entry cmd_choose_session_entry = {
-	"choose-session", NULL,
-	"t:", 0, 1,
-	CMD_TARGET_WINDOW_USAGE " [template]",
-	0,
-	NULL,
-	NULL,
-	cmd_choose_session_exec
-};
-
-struct cmd_choose_session_data {
-	struct client	*client;
-	char   		*template;
-};
-
-int
-cmd_choose_session_exec(struct cmd *self, struct cmd_ctx *ctx)
-{
-	struct args			*args = self->args;
-	struct cmd_choose_session_data	*cdata;
-	struct winlink			*wl;
-	struct session			*s;
-	struct session_group		*sg;
-	u_int			 	 idx, sgidx, cur;
-	char				 tmp[64];
-
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
-	}
-
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
-
-	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
-		return (0);
-
-	cur = idx = 0;
-	RB_FOREACH(s, sessions, &sessions) {
-		if (s == ctx->curclient->session)
-			cur = idx;
-		idx++;
-
-		sg = session_group_find(s);
-		if (sg == NULL)
-			*tmp = '\0';
-		else {
-			sgidx = session_group_index(sg);
-			xsnprintf(tmp, sizeof tmp, " (group %u)", sgidx);
-		}
-
-		window_choose_add(wl->window->active, s->idx,
-		    "%s: %u windows [%ux%u]%s%s", s->name,
-		    winlink_count(&s->windows), s->sx, s->sy,
-		    tmp, s->flags & SESSION_UNATTACHED ? "" : " (attached)");
-	}
-
-	cdata = xmalloc(sizeof *cdata);
-	if (args->argc != 0)
-		cdata->template = xstrdup(args->argv[0]);
-	else
-		cdata->template = xstrdup("switch-client -t '%%'");
-	cdata->client = ctx->curclient;
-	cdata->client->references++;
-
-	window_choose_ready(wl->window->active,
-	    cur, cmd_choose_session_callback, cmd_choose_session_free, cdata);
-
-	return (0);
-}
-
-void
-cmd_choose_session_callback(void *data, int idx)
-{
-	struct cmd_choose_session_data	*cdata = data;
-	struct session			*s;
-	struct cmd_list			*cmdlist;
-	struct cmd_ctx			 ctx;
-	char				*template, *cause;
-
-	if (idx == -1)
-		return;
-	if (cdata->client->flags & CLIENT_DEAD)
-		return;
-
-	s = session_find_by_index(idx);
-	if (s == NULL)
-		return;
-	template = cmd_template_replace(cdata->template, s->name, 1);
-
-	if (cmd_string_parse(template, &cmdlist, &cause) != 0) {
-		if (cause != NULL) {
-			*cause = toupper((u_char) *cause);
-			status_message_set(cdata->client, "%s", cause);
-			xfree(cause);
-		}
-		xfree(template);
-		return;
-	}
-	xfree(template);
-
-	ctx.msgdata = NULL;
-	ctx.curclient = cdata->client;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
-	cmd_list_free(cmdlist);
-}
-
-void
-cmd_choose_session_free(void *data)
-{
-	struct cmd_choose_session_data	*cdata = data;
-
-	cdata->client->references--;
-	xfree(cdata->template);
-	xfree(cdata);
-}

cmd-choose-tree.c

@@ -0,0 +1,235 @@
+/* $Id$ */
+
+/*
+ * Copyright (c) 2012 Thomas Adam <thomas@xteddy.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+
+#include <string.h>
+
+#include "tmux.h"
+
+#define CMD_CHOOSE_TREE_WINDOW_ACTION "select-window -t '%%'"
+#define CMD_CHOOSE_TREE_SESSION_ACTION "switch-client -t '%%'"
+
+/*
+ * Enter choice mode to choose a session and/or window.
+ */
+
+enum cmd_retval	cmd_choose_tree_exec(struct cmd *, struct cmd_q *);
+
+const struct cmd_entry cmd_choose_tree_entry = {
+	"choose-tree", NULL,
+	"S:W:swub:c:t:", 0, 1,
+	"[-suw] [-b session-template] [-c window template] [-S format] " \
+	"[-W format] " CMD_TARGET_WINDOW_USAGE,
+	0,
+	NULL,
+	cmd_choose_tree_exec
+};
+
+const struct cmd_entry cmd_choose_session_entry = {
+	"choose-session", NULL,
+	"F:t:", 0, 1,
+	CMD_TARGET_WINDOW_USAGE " [-F format] [template]",
+	0,
+	NULL,
+	cmd_choose_tree_exec
+};
+
+const struct cmd_entry cmd_choose_window_entry = {
+	"choose-window", NULL,
+	"F:t:", 0, 1,
+	CMD_TARGET_WINDOW_USAGE "[-F format] [template]",
+	0,
+	NULL,
+	cmd_choose_tree_exec
+};
+
+enum cmd_retval
+cmd_choose_tree_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args			*args = self->args;
+	struct winlink			*wl, *wm;
+	struct session			*s, *s2;
+	struct client			*c;
+	struct window_choose_data	*wcd = NULL;
+	const char			*ses_template, *win_template;
+	char				*final_win_action, *cur_win_template;
+	char				*final_win_template_middle;
+	char				*final_win_template_last;
+	const char			*ses_action, *win_action;
+	u_int				 cur_win, idx_ses, win_ses, win_max;
+	u_int				 wflag, sflag;
+
+	ses_template = win_template = NULL;
+	ses_action = win_action = NULL;
+
+	if ((c = cmd_current_client(cmdq)) == NULL) {
+		cmdq_error(cmdq, "no client available");
+		return (CMD_RETURN_ERROR);
+	}
+
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
+		return (CMD_RETURN_NORMAL);
+
+	/* Sort out which command this is. */
+	wflag = sflag = 0;
+	if (self->entry == &cmd_choose_session_entry) {
+		sflag = 1;
+		if ((ses_template = args_get(args, 'F')) == NULL)
+			ses_template = CHOOSE_TREE_SESSION_TEMPLATE;
+
+		if (args->argc != 0)
+			ses_action = args->argv[0];
+		else
+			ses_action = CMD_CHOOSE_TREE_SESSION_ACTION;
+	} else if (self->entry == &cmd_choose_window_entry) {
+		wflag = 1;
+		if ((win_template = args_get(args, 'F')) == NULL)
+			win_template = CHOOSE_TREE_WINDOW_TEMPLATE;
+
+		if (args->argc != 0)
+			win_action = args->argv[0];
+		else
+			win_action = CMD_CHOOSE_TREE_WINDOW_ACTION;
+	} else {
+		wflag = args_has(args, 'w');
+		sflag = args_has(args, 's');
+
+		if ((ses_action = args_get(args, 'b')) == NULL)
+			ses_action = CMD_CHOOSE_TREE_SESSION_ACTION;
+
+		if ((win_action = args_get(args, 'c')) == NULL)
+			win_action = CMD_CHOOSE_TREE_WINDOW_ACTION;
+
+		if ((ses_template = args_get(args, 'S')) == NULL)
+			ses_template = CHOOSE_TREE_SESSION_TEMPLATE;
+
+		if ((win_template = args_get(args, 'W')) == NULL)
+			win_template = CHOOSE_TREE_WINDOW_TEMPLATE;
+	}
+
+	/*
+	 * If not asking for windows and sessions, assume no "-ws" given and
+	 * hence display the entire tree outright.
+	 */
+	if (!wflag && !sflag)
+		wflag = sflag = 1;
+
+	/*
+	 * If we're drawing in tree mode, including sessions, then pad the
+	 * window template, otherwise just render the windows as a flat list
+	 * without any padding.
+	 */
+	if (wflag && sflag) {
+		xasprintf(&final_win_template_middle,
+		    " \001tq\001> %s", win_template);
+		xasprintf(&final_win_template_last,
+		    " \001mq\001> %s", win_template);
+	} else if (wflag) {
+		final_win_template_middle = xstrdup(win_template);
+		final_win_template_last = xstrdup(win_template);
+	} else
+		final_win_template_middle = final_win_template_last = NULL;
+
+	idx_ses = cur_win = -1;
+	RB_FOREACH(s2, sessions, &sessions) {
+		idx_ses++;
+
+		/*
+		 * If we're just choosing windows, jump straight there. Note
+		 * that this implies the current session, so only choose
+		 * windows when the session matches this one.
+		 */
+		if (wflag && !sflag) {
+			if (s != s2)
+				continue;
+			goto windows_only;
+		}
+
+		wcd = window_choose_add_session(wl->window->active,
+		    c, s2, ses_template, ses_action, idx_ses);
+
+		/* If we're just choosing sessions, skip choosing windows. */
+		if (sflag && !wflag) {
+			if (s == s2)
+				cur_win = idx_ses;
+			continue;
+		}
+windows_only:
+		win_ses = win_max = -1;
+		RB_FOREACH(wm, winlinks, &s2->windows)
+			win_max++;
+		RB_FOREACH(wm, winlinks, &s2->windows) {
+			win_ses++;
+			if (sflag && wflag)
+				idx_ses++;
+
+			if (wm == s2->curw && s == s2) {
+				if (wflag && !sflag) {
+					/*
+					 * Then we're only counting windows.
+					 * So remember which is the current
+					 * window in the list.
+					 */
+					cur_win = win_ses;
+				} else
+					cur_win = idx_ses;
+			}
+
+			xasprintf(&final_win_action, "%s %s %s",
+			    wcd != NULL ? wcd->command : "",
+			    wcd != NULL ? ";" : "", win_action);
+
+			if (win_ses != win_max)
+				cur_win_template = final_win_template_middle;
+			else
+				cur_win_template = final_win_template_last;
+
+			window_choose_add_window(wl->window->active,
+			    c, s2, wm, cur_win_template,
+			    final_win_action,
+			    (wflag && !sflag) ? win_ses : idx_ses);
+
+			free(final_win_action);
+		}
+
+		/*
+		 * If we're just drawing windows, don't consider moving on to
+		 * other sessions as we only list windows in this session.
+		 */
+		if (wflag && !sflag)
+			break;
+	}
+	free(final_win_template_middle);
+	free(final_win_template_last);
+
+	window_choose_ready(wl->window->active, cur_win, NULL);
+
+	if (args_has(args, 'u')) {
+		window_choose_expand_all(wl->window->active);
+		window_choose_set_current(wl->window->active, cur_win);
+	}
+
+	return (CMD_RETURN_NORMAL);
+}

cmd-choose-window.c

@@ -1,169 +0,0 @@
-/* $Id$ */
-
-/*
- * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
- * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/types.h>
-
-#include <ctype.h>
-
-#include "tmux.h"
-
-/*
- * Enter choice mode to choose a window.
- */
-
-int	cmd_choose_window_exec(struct cmd *, struct cmd_ctx *);
-
-void	cmd_choose_window_callback(void *, int);
-void	cmd_choose_window_free(void *);
-
-const struct cmd_entry cmd_choose_window_entry = {
-	"choose-window", NULL,
-	"t:", 0, 1,
-	CMD_TARGET_WINDOW_USAGE " [template]",
-	0,
-	NULL,
-	NULL,
-	cmd_choose_window_exec
-};
-
-struct cmd_choose_window_data {
-	struct client	*client;
-	struct session	*session;
-	char   		*template;
-};
-
-int
-cmd_choose_window_exec(struct cmd *self, struct cmd_ctx *ctx)
-{
-	struct args			*args = self->args;
-	struct cmd_choose_window_data	*cdata;
-	struct session			*s;
-	struct winlink			*wl, *wm;
-	struct window			*w;
-	u_int			 	 idx, cur;
-	char				*flags, *title;
-	const char			*left, *right;
-
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
-	}
-	s = ctx->curclient->session;
-
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
-
-	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
-		return (0);
-
-	cur = idx = 0;
-	RB_FOREACH(wm, winlinks, &s->windows) {
-		w = wm->window;
-
-		if (wm == s->curw)
-			cur = idx;
-		idx++;
-
-		flags = window_printable_flags(s, wm);
-		title = w->active->screen->title;
-		if (wm == wl)
-			title = w->active->base.title;
-		left = " \"";
-		right = "\"";
-		if (*title == '\0')
-			left = right = "";
-
-		window_choose_add(wl->window->active,
-		    wm->idx, "%3d: %s%s [%ux%u] (%u panes%s)%s%s%s",
-		    wm->idx, w->name, flags, w->sx, w->sy, window_count_panes(w),
-		    w->active->fd == -1 ? ", dead" : "",
-		    left, title, right);
-
-		xfree(flags);
-	}
-
-	cdata = xmalloc(sizeof *cdata);
-	if (args->argc != 0)
-		cdata->template = xstrdup(args->argv[0]);
-	else
-		cdata->template = xstrdup("select-window -t '%%'");
-	cdata->session = s;
-	cdata->session->references++;
-	cdata->client = ctx->curclient;
-	cdata->client->references++;
-
-	window_choose_ready(wl->window->active,
-	    cur, cmd_choose_window_callback, cmd_choose_window_free, cdata);
-
-	return (0);
-}
-
-void
-cmd_choose_window_callback(void *data, int idx)
-{
-	struct cmd_choose_window_data	*cdata = data;
-	struct session			*s = cdata->session;
-	struct cmd_list			*cmdlist;
-	struct cmd_ctx			 ctx;
-	char				*target, *template, *cause;
-
-	if (idx == -1)
-		return;
-	if (!session_alive(s))
-		return;
-	if (cdata->client->flags & CLIENT_DEAD)
-		return;
-
-	xasprintf(&target, "%s:%d", s->name, idx);
-	template = cmd_template_replace(cdata->template, target, 1);
-	xfree(target);
-
-	if (cmd_string_parse(template, &cmdlist, &cause) != 0) {
-		if (cause != NULL) {
-			*cause = toupper((u_char) *cause);
-			status_message_set(cdata->client, "%s", cause);
-			xfree(cause);
-		}
-		xfree(template);
-		return;
-	}
-	xfree(template);
-
-	ctx.msgdata = NULL;
-	ctx.curclient = cdata->client;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
-	cmd_list_free(cmdlist);
-}
-
-void
-cmd_choose_window_free(void *data)
-{
-	struct cmd_choose_window_data	*cdata = data;
-
-	cdata->session->references--;
-	cdata->client->references--;
-	xfree(cdata->template);
-	xfree(cdata);
-}

cmd-clear-history.c

@@ -24,7 +24,7 @@
  * Clear pane history.
  */
 
-int	cmd_clear_history_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_clear_history_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_clear_history_entry = {
 	"clear-history", "clearhist",
@@ -32,23 +32,22 @@ const struct cmd_entry cmd_clear_history_entry = {
 	CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_clear_history_exec
 };
 
-int
-cmd_clear_history_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_clear_history_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
 	struct grid		*gd;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
-		return (-1);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
 	gd = wp->base.grid;
 
 	grid_move_lines(gd, 0, gd->hsize, gd->sy);
 	gd->hsize = 0;
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-clock-mode.c

@@ -24,7 +24,7 @@
  * Enter clock mode.
  */
 
-int	cmd_clock_mode_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_clock_mode_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_clock_mode_entry = {
 	"clock-mode", NULL,
@@ -32,20 +32,19 @@ const struct cmd_entry cmd_clock_mode_entry = {
 	CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_clock_mode_exec
 };
 
-int
-cmd_clock_mode_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_clock_mode_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
-		return (-1);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	window_pane_set_mode(wp, &window_clock_mode);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-command-prompt.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <ctype.h>
+#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 
@@ -29,8 +30,7 @@
  */
 
 void	cmd_command_prompt_key_binding(struct cmd *, int);
-int	cmd_command_prompt_check(struct args *);
-int	cmd_command_prompt_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_command_prompt_exec(struct cmd *, struct cmd_q *);
 
 int	cmd_command_prompt_callback(void *, const char *);
 void	cmd_command_prompt_free(void *);
@@ -41,7 +41,6 @@ const struct cmd_entry cmd_command_prompt_entry = {
 	"[-I inputs] [-p prompts] " CMD_TARGET_CLIENT_USAGE " [template]",
 	0,
 	cmd_command_prompt_key_binding,
-	NULL,
 	cmd_command_prompt_exec
 };
 
@@ -83,8 +82,8 @@ cmd_command_prompt_key_binding(struct cmd *self, int key)
 	}
 }
 
-int
-cmd_command_prompt_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_command_prompt_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
 	const char			*inputs, *prompts;
@@ -93,11 +92,11 @@ cmd_command_prompt_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char				*prompt, *ptr, *input = NULL;
 	size_t				 n;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (c->prompt_string != NULL)
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	cdata = xmalloc(sizeof *cdata);
 	cdata->c = c;
@@ -138,9 +137,9 @@ cmd_command_prompt_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	status_prompt_set(c, prompt, input, cmd_command_prompt_callback,
 	    cmd_command_prompt_free, cdata, 0);
-	xfree(prompt);
+	free(prompt);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
 int
@@ -149,7 +148,6 @@ cmd_command_prompt_callback(void *data, const char *s)
 	struct cmd_command_prompt_cdata	*cdata = data;
 	struct client			*c = cdata->c;
 	struct cmd_list			*cmdlist;
-	struct cmd_ctx			 ctx;
 	char				*cause, *new_template, *prompt, *ptr;
 	char				*input = NULL;
 
@@ -157,7 +155,7 @@ cmd_command_prompt_callback(void *data, const char *s)
 		return (0);
 
 	new_template = cmd_template_replace(cdata->template, s, cdata->idx);
-	xfree(cdata->template);
+	free(cdata->template);
 	cdata->template = new_template;
 
 	/*
@@ -169,30 +167,21 @@ cmd_command_prompt_callback(void *data, const char *s)
 		input = strsep(&cdata->next_input, ",");
 		status_prompt_update(c, prompt, input);
 
-		xfree(prompt);
+		free(prompt);
 		cdata->idx++;
 		return (1);
 	}
 
-	if (cmd_string_parse(new_template, &cmdlist, &cause) != 0) {
+	if (cmd_string_parse(new_template, &cmdlist, NULL, 0, &cause) != 0) {
 		if (cause != NULL) {
 			*cause = toupper((u_char) *cause);
 			status_message_set(c, "%s", cause);
-			xfree(cause);
+			free(cause);
 		}
 		return (0);
 	}
 
-	ctx.msgdata = NULL;
-	ctx.curclient = c;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
+	cmdq_run(c->cmdq, cmdlist);
 	cmd_list_free(cmdlist);
 
 	if (c->prompt_callbackfn != (void *) &cmd_command_prompt_callback)
@@ -205,11 +194,8 @@ cmd_command_prompt_free(void *data)
 {
 	struct cmd_command_prompt_cdata	*cdata = data;
 
-	if (cdata->inputs != NULL)
-		xfree(cdata->inputs);
-	if (cdata->prompts != NULL)
-		xfree(cdata->prompts);
-	if (cdata->template != NULL)
-		xfree(cdata->template);
-	xfree(cdata);
+	free(cdata->inputs);
+	free(cdata->prompts);
+	free(cdata->template);
+	free(cdata);
 }

cmd-confirm-before.c

@@ -17,6 +17,7 @@
  */
 
 #include <ctype.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -25,11 +26,11 @@
  * Asks for confirmation before executing a command.
  */
 
-void	cmd_confirm_before_key_binding(struct cmd *, int);
-int	cmd_confirm_before_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_confirm_before_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_confirm_before_exec(struct cmd *, struct cmd_q *);
 
-int	cmd_confirm_before_callback(void *, const char *);
-void	cmd_confirm_before_free(void *);
+int		 cmd_confirm_before_callback(void *, const char *);
+void		 cmd_confirm_before_free(void *);
 
 const struct cmd_entry cmd_confirm_before_entry = {
 	"confirm-before", "confirm",
@@ -37,13 +38,12 @@ const struct cmd_entry cmd_confirm_before_entry = {
 	"[-p prompt] " CMD_TARGET_CLIENT_USAGE " command",
 	0,
 	cmd_confirm_before_key_binding,
-	NULL,
 	cmd_confirm_before_exec
 };
 
 struct cmd_confirm_before_data {
-	struct client	*c;
 	char		*cmd;
+	struct client	*client;
 };
 
 void
@@ -64,8 +64,8 @@ cmd_confirm_before_key_binding(struct cmd *self, int key)
 	}
 }
 
-int
-cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_confirm_before_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
 	struct cmd_confirm_before_data	*cdata;
@@ -73,13 +73,8 @@ cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char				*cmd, *copy, *new_prompt, *ptr;
 	const char			*prompt;
 
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
-	}
-
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if ((prompt = args_get(args, 'p')) != NULL)
 		xasprintf(&new_prompt, "%s ", prompt);
@@ -87,53 +82,48 @@ cmd_confirm_before_exec(struct cmd *self, struct cmd_ctx *ctx)
 		ptr = copy = xstrdup(args->argv[0]);
 		cmd = strsep(&ptr, " \t");
 		xasprintf(&new_prompt, "Confirm '%s'? (y/n) ", cmd);
-		xfree(copy);
+		free(copy);
 	}
 
 	cdata = xmalloc(sizeof *cdata);
 	cdata->cmd = xstrdup(args->argv[0]);
-	cdata->c = c;
-	status_prompt_set(cdata->c, new_prompt, NULL,
+
+	cdata->client = c;
+	cdata->client->references++;
+
+	status_prompt_set(c, new_prompt, NULL,
 	    cmd_confirm_before_callback, cmd_confirm_before_free, cdata,
 	    PROMPT_SINGLE);
 
-	xfree(new_prompt);
-	return (1);
+	free(new_prompt);
+	return (CMD_RETURN_NORMAL);
 }
 
 int
 cmd_confirm_before_callback(void *data, const char *s)
 {
 	struct cmd_confirm_before_data	*cdata = data;
-	struct client			*c = cdata->c;
+	struct client			*c = cdata->client;
 	struct cmd_list			*cmdlist;
-	struct cmd_ctx	 	 	 ctx;
 	char				*cause;
 
+	if (c->flags & CLIENT_DEAD)
+		return (0);
+
 	if (s == NULL || *s == '\0')
 		return (0);
 	if (tolower((u_char) s[0]) != 'y' || s[1] != '\0')
 		return (0);
 
-	if (cmd_string_parse(cdata->cmd, &cmdlist, &cause) != 0) {
+	if (cmd_string_parse(cdata->cmd, &cmdlist, NULL, 0, &cause) != 0) {
 		if (cause != NULL) {
-			*cause = toupper((u_char) *cause);
-			status_message_set(c, "%s", cause);
-			xfree(cause);
+			cmdq_error(c->cmdq, "%s", cause);
+			free(cause);
 		}
 		return (0);
 	}
 
-	ctx.msgdata = NULL;
-	ctx.curclient = c;
-
-	ctx.error = key_bindings_error;
-	ctx.print = key_bindings_print;
-	ctx.info = key_bindings_info;
-
-	ctx.cmdclient = NULL;
-
-	cmd_list_exec(cmdlist, &ctx);
+	cmdq_run(c->cmdq, cmdlist);
 	cmd_list_free(cmdlist);
 
 	return (0);
@@ -143,8 +133,10 @@ void
 cmd_confirm_before_free(void *data)
 {
 	struct cmd_confirm_before_data	*cdata = data;
+	struct client			*c = cdata->client;
 
-	if (cdata->cmd != NULL)
-		xfree(cdata->cmd);
-	xfree(cdata);
+	c->references--;
+
+	free(cdata->cmd);
+	free(cdata);
 }

cmd-copy-mode.c

@@ -24,8 +24,8 @@
  * Enter copy mode.
  */
 
-void	cmd_copy_mode_key_binding(struct cmd *, int);
-int	cmd_copy_mode_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_copy_mode_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_copy_mode_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_copy_mode_entry = {
 	"copy-mode", NULL,
@@ -33,7 +33,6 @@ const struct cmd_entry cmd_copy_mode_entry = {
 	"[-u] " CMD_TARGET_PANE_USAGE,
 	0,
 	cmd_copy_mode_key_binding,
-	NULL,
 	cmd_copy_mode_exec
 };
 
@@ -45,20 +44,22 @@ cmd_copy_mode_key_binding(struct cmd *self, int key)
 		args_set(self->args, 'u', NULL);
 }
 
-int
-cmd_copy_mode_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_copy_mode_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
-		return (-1);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
 
-	if (window_pane_set_mode(wp, &window_copy_mode) != 0)
-		return (0);
-	window_copy_init_from_pane(wp);
+	if (wp->mode != &window_copy_mode) {
+		if (window_pane_set_mode(wp, &window_copy_mode) != 0)
+			return (CMD_RETURN_NORMAL);
+		window_copy_init_from_pane(wp);
+	}
 	if (wp->mode == &window_copy_mode && args_has(self->args, 'u'))
 		window_copy_pageup(wp);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-delete-buffer.c

@@ -26,7 +26,7 @@
  * Delete a paste buffer.
  */
 
-int	cmd_delete_buffer_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_delete_buffer_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_delete_buffer_entry = {
 	"delete-buffer", "deleteb",
@@ -34,12 +34,11 @@ const struct cmd_entry cmd_delete_buffer_entry = {
 	CMD_BUFFER_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_delete_buffer_exec
 };
 
-int
-cmd_delete_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_delete_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	char		*cause;
@@ -47,20 +46,20 @@ cmd_delete_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	if (!args_has(args, 'b')) {
 		paste_free_top(&global_buffers);
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 
 	buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 	if (cause != NULL) {
-		ctx->error(ctx, "buffer %s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "buffer %s", cause);
+		free(cause);
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (paste_free_index(&global_buffers, buffer) != 0) {
-		ctx->error(ctx, "no buffer %d", buffer);
-		return (-1);
+		cmdq_error(cmdq, "no buffer %d", buffer);
+		return (CMD_RETURN_ERROR);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-detach-client.c

@@ -18,31 +18,32 @@
 
 #include <sys/types.h>
 
+#include <string.h>
+
 #include "tmux.h"
 
 /*
  * Detach a client.
  */
 
-int	cmd_detach_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_detach_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_detach_client_entry = {
 	"detach-client", "detach",
-	"s:t:P", 0, 0,
-	"[-P] [-s target-session] " CMD_TARGET_CLIENT_USAGE,
+	"as:t:P", 0, 0,
+	"[-P] [-a] [-s target-session] " CMD_TARGET_CLIENT_USAGE,
 	CMD_READONLY,
 	NULL,
-	NULL,
 	cmd_detach_client_exec
 };
 
-int
-cmd_detach_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_detach_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
-	struct client	*c;
-	struct session 	*s;
-	enum msgtype     msgtype;
+	struct client	*c, *c2;
+	struct session	*s;
+	enum msgtype	 msgtype;
 	u_int 		 i;
 
 	if (args_has(args, 'P'))
@@ -51,22 +52,37 @@ cmd_detach_client_exec(struct cmd *self, struct cmd_ctx *ctx)
 		msgtype = MSG_DETACH;
 
 	if (args_has(args, 's')) {
-		s = cmd_find_session(ctx, args_get(args, 's'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 's'), 0);
 		if (s == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 			c = ARRAY_ITEM(&clients, i);
-			if (c != NULL && c->session == s)
-				server_write_client(c, msgtype, NULL, 0);
+			if (c == NULL || c->session != s)
+				continue;
+			server_write_client(c, msgtype, c->session->name,
+			    strlen(c->session->name) + 1);
 		}
 	} else {
-		c = cmd_find_client(ctx, args_get(args, 't'));
+		c = cmd_find_client(cmdq, args_get(args, 't'), 0);
 		if (c == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 
-		server_write_client(c, msgtype, NULL, 0);
+		if (args_has(args, 'a')) {
+			for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
+				c2 = ARRAY_ITEM(&clients, i);
+				if (c2 == NULL || c2->session == NULL ||
+				    c2 == c)
+					continue;
+				server_write_client(c2, msgtype,
+				    c2->session->name,
+				    strlen(c2->session->name) + 1);
+			}
+		} else {
+			server_write_client(c, msgtype, c->session->name,
+			    strlen(c->session->name) + 1);
+		}
 	}
 
-	return (0);
+	return (CMD_RETURN_STOP);
 }

cmd-display-message.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <time.h>
 
 #include "tmux.h"
@@ -26,20 +27,20 @@
  * Displays a message in the status line.
  */
 
-int	cmd_display_message_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_display_message_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_display_message_entry = {
 	"display-message", "display",
-	"c:pt:", 0, 1,
-	"[-p] [-c target-client] [-t target-pane] [message]",
+	"c:pt:F:", 0, 1,
+	"[-p] [-c target-client] [-F format] " CMD_TARGET_PANE_USAGE
+	" [message]",
 	0,
 	NULL,
-	NULL,
 	cmd_display_message_exec
 };
 
-int
-cmd_display_message_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_display_message_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct client		*c;
@@ -48,31 +49,62 @@ cmd_display_message_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct window_pane	*wp;
 	const char		*template;
 	char			*msg;
+	struct format_tree	*ft;
+	char			 out[BUFSIZ];
+	time_t			 t;
+	size_t			 len;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 'c'))) == NULL)
-		return (-1);
-
-	if (args_has(args, 't') != 0) {
-		wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp);
+	if (args_has(args, 't')) {
+		wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
 		if (wl == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 	} else {
-		s = NULL;
-		wl = NULL;
-		wp = NULL;
+		wl = cmd_find_pane(cmdq, NULL, &s, &wp);
+		if (wl == NULL)
+			return (CMD_RETURN_ERROR);
 	}
 
-	if (args->argc == 0)
-		template = "[#S] #I:#W, current pane #P - (%H:%M %d-%b-%y)";
-	else
-		template = args->argv[0];
+	if (args_has(args, 'F') && args->argc != 0) {
+		cmdq_error(cmdq, "only one of -F or argument must be given");
+		return (CMD_RETURN_ERROR);
+	}
 
-	msg = status_replace(c, s, wl, wp, template, time(NULL), 0);
+	if (args_has(args, 'c')) {
+		c = cmd_find_client(cmdq, args_get(args, 'c'), 0);
+		if (c == NULL)
+			return (CMD_RETURN_ERROR);
+	} else {
+		c = cmd_current_client(cmdq);
+		if (c == NULL && !args_has(self->args, 'p')) {
+			cmdq_error(cmdq, "no client available");
+			return (CMD_RETURN_ERROR);
+		}
+	}
+
+	template = args_get(args, 'F');
+	if (args->argc != 0)
+		template = args->argv[0];
+	if (template == NULL)
+		template = DISPLAY_MESSAGE_TEMPLATE;
+
+	ft = format_create();
+	if (c != NULL)
+		format_client(ft, c);
+	format_session(ft, s);
+	format_winlink(ft, s, wl);
+	format_window_pane(ft, wp);
+
+	t = time(NULL);
+	len = strftime(out, sizeof out, template, localtime(&t));
+	out[len] = '\0';
+
+	msg = format_expand(ft, out);
 	if (args_has(self->args, 'p'))
-		ctx->print(ctx, "%s", msg);
+		cmdq_print(cmdq, "%s", msg);
 	else
 		status_message_set(c, "%s", msg);
-	xfree(msg);
+	free(msg);
+	format_free(ft);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-display-panes.c

@@ -24,7 +24,7 @@
  * Display panes on a client.
  */
 
-int	cmd_display_panes_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_display_panes_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_display_panes_entry = {
 	"display-panes", "displayp",
@@ -32,20 +32,19 @@ const struct cmd_entry cmd_display_panes_entry = {
 	CMD_TARGET_CLIENT_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_display_panes_exec
 };
 
-int
-cmd_display_panes_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_display_panes_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	server_set_identify(c);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-find-window.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <fnmatch.h>
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -27,94 +28,146 @@
  * Find window containing text.
  */
 
-int	cmd_find_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_find_window_exec(struct cmd *, struct cmd_q *);
 
-void	cmd_find_window_callback(void *, int);
-void	cmd_find_window_free(void *);
+void	cmd_find_window_callback(struct window_choose_data *);
+
+/* Flags for determining matching behavior. */
+#define CMD_FIND_WINDOW_BY_TITLE   0x1
+#define CMD_FIND_WINDOW_BY_CONTENT 0x2
+#define CMD_FIND_WINDOW_BY_NAME    0x4
+
+#define CMD_FIND_WINDOW_ALL		\
+	(CMD_FIND_WINDOW_BY_TITLE |	\
+	 CMD_FIND_WINDOW_BY_CONTENT |	\
+	 CMD_FIND_WINDOW_BY_NAME)
 
 const struct cmd_entry cmd_find_window_entry = {
 	"find-window", "findw",
-	"t:", 1, 1,
-	CMD_TARGET_WINDOW_USAGE " match-string",
+	"F:CNt:T", 1, 4,
+	"[-CNT] [-F format] " CMD_TARGET_WINDOW_USAGE " match-string",
 	0,
 	NULL,
-	NULL,
 	cmd_find_window_exec
 };
 
 struct cmd_find_window_data {
-	struct session	*session;
+	struct winlink	*wl;
+	char		*list_ctx;
+	u_int		 pane_id;
 };
+ARRAY_DECL(cmd_find_window_data_list, struct cmd_find_window_data);
 
-int
-cmd_find_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+u_int	cmd_find_window_match_flags(struct args *);
+void	cmd_find_window_match(struct cmd_find_window_data_list *, int,
+	    struct winlink *, const char *, const char *);
+
+u_int
+cmd_find_window_match_flags(struct args *args)
 {
-	struct args			*args = self->args;
-	struct cmd_find_window_data	*cdata;
-	struct session			*s;
-	struct winlink			*wl, *wm;
-	struct window			*w;
+	u_int	match_flags = 0;
+
+	/* Turn on flags based on the options. */
+	if (args_has(args, 'T'))
+		match_flags |= CMD_FIND_WINDOW_BY_TITLE;
+	if (args_has(args, 'C'))
+		match_flags |= CMD_FIND_WINDOW_BY_CONTENT;
+	if (args_has(args, 'N'))
+		match_flags |= CMD_FIND_WINDOW_BY_NAME;
+
+	/* If none of the flags were set, default to matching anything. */
+	if (match_flags == 0)
+		match_flags = CMD_FIND_WINDOW_ALL;
+
+	return (match_flags);
+}
+
+void
+cmd_find_window_match(struct cmd_find_window_data_list *find_list,
+    int match_flags, struct winlink *wl, const char *str, const char *searchstr)
+{
+	struct cmd_find_window_data	 find_data;
 	struct window_pane		*wp;
-	ARRAY_DECL(, u_int)	 	 list_idx;
-	ARRAY_DECL(, char *)	 	 list_ctx;
-	char				*str, *sres, *sctx, *searchstr;
 	u_int				 i, line;
+	char				*sres;
 
-	if (ctx->curclient == NULL) {
-		ctx->error(ctx, "must be run interactively");
-		return (-1);
-	}
-	s = ctx->curclient->session;
+	memset(&find_data, 0, sizeof find_data);
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	i = 0;
+	TAILQ_FOREACH(wp, &wl->window->panes, entry) {
+		i++;
 
-	str = args->argv[0];
+		if ((match_flags & CMD_FIND_WINDOW_BY_NAME) &&
+		    fnmatch(searchstr, wl->window->name, 0) == 0) {
+			find_data.list_ctx = xstrdup("");
+			break;
+		}
 
-	ARRAY_INIT(&list_idx);
-	ARRAY_INIT(&list_ctx);
+		if ((match_flags & CMD_FIND_WINDOW_BY_TITLE) &&
+		    fnmatch(searchstr, wp->base.title, 0) == 0) {
+			xasprintf(&find_data.list_ctx,
+			    "pane %u title: \"%s\"", i - 1, wp->base.title);
+			break;
+		}
 
-	xasprintf(&searchstr, "*%s*", str);
-	RB_FOREACH(wm, winlinks, &s->windows) {
-		i = 0;
-		TAILQ_FOREACH(wp, &wm->window->panes, entry) {
-			i++;
-
-			if (fnmatch(searchstr, wm->window->name, 0) == 0)
-				sctx = xstrdup("");
-			else {
-				sres = window_pane_search(wp, str, &line);
-				if (sres == NULL &&
-				    fnmatch(searchstr, wp->base.title, 0) != 0)
-					continue;
-
-				if (sres == NULL) {
-					xasprintf(&sctx,
-					    "pane %u title: \"%s\"", i - 1,
-					    wp->base.title);
-				} else {
-					xasprintf(&sctx,
-					    "pane %u line %u: \"%s\"", i - 1,
-					    line + 1, sres);
-					xfree(sres);
-				}
-			}
-
-			ARRAY_ADD(&list_idx, wm->idx);
-			ARRAY_ADD(&list_ctx, sctx);
+		if (match_flags & CMD_FIND_WINDOW_BY_CONTENT &&
+		    (sres = window_pane_search(wp, str, &line)) != NULL) {
+			xasprintf(&find_data.list_ctx,
+			    "pane %u line %u: \"%s\"", i - 1, line + 1, sres);
+			free(sres);
+			break;
 		}
 	}
-	xfree(searchstr);
+	if (find_data.list_ctx != NULL) {
+		find_data.wl = wl;
+		find_data.pane_id = i - 1;
+		ARRAY_ADD(find_list, find_data);
+	}
+}
 
-	if (ARRAY_LENGTH(&list_idx) == 0) {
-		ctx->error(ctx, "no windows matching: %s", str);
-		ARRAY_FREE(&list_idx);
-		ARRAY_FREE(&list_ctx);
-		return (-1);
+enum cmd_retval
+cmd_find_window_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args			*args = self->args;
+	struct client			*c;
+	struct window_choose_data	*cdata;
+	struct session			*s;
+	struct winlink			*wl, *wm;
+	struct cmd_find_window_data_list find_list;
+	char				*str, *searchstr;
+	const char			*template;
+	u_int				 i, match_flags;
+
+	if ((c = cmd_current_client(cmdq)) == NULL) {
+		cmdq_error(cmdq, "no client available");
+		return (CMD_RETURN_ERROR);
+	}
+	s = c->session;
+
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if ((template = args_get(args, 'F')) == NULL)
+		template = FIND_WINDOW_TEMPLATE;
+
+	match_flags = cmd_find_window_match_flags(args);
+	str = args->argv[0];
+
+	ARRAY_INIT(&find_list);
+
+	xasprintf(&searchstr, "*%s*", str);
+	RB_FOREACH(wm, winlinks, &s->windows)
+	    cmd_find_window_match (&find_list, match_flags, wm, str, searchstr);
+	free(searchstr);
+
+	if (ARRAY_LENGTH(&find_list) == 0) {
+		cmdq_error(cmdq, "no windows matching: %s", str);
+		ARRAY_FREE(&find_list);
+		return (CMD_RETURN_ERROR);
 	}
 
-	if (ARRAY_LENGTH(&list_idx) == 1) {
-		if (session_select(s, ARRAY_FIRST(&list_idx)) == 0)
+	if (ARRAY_LENGTH(&find_list) == 1) {
+		if (session_select(s, ARRAY_FIRST(&find_list).wl->idx) == 0)
 			server_redraw_session(s);
 		recalculate_sizes();
 		goto out;
@@ -123,54 +176,52 @@ cmd_find_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (window_pane_set_mode(wl->window->active, &window_choose_mode) != 0)
 		goto out;
 
-	for (i = 0; i < ARRAY_LENGTH(&list_idx); i++) {
-		wm = winlink_find_by_index(
-		    &s->windows, ARRAY_ITEM(&list_idx, i));
-		w = wm->window;
+	for (i = 0; i < ARRAY_LENGTH(&find_list); i++) {
+		wm = ARRAY_ITEM(&find_list, i).wl;
 
-		sctx = ARRAY_ITEM(&list_ctx, i);
-		window_choose_add(wl->window->active,
-		    wm->idx, "%3d: %s [%ux%u] (%u panes) %s", wm->idx, w->name,
-		    w->sx, w->sy, window_count_panes(w), sctx);
-		xfree(sctx);
+		cdata = window_choose_data_create(TREE_OTHER, c, c->session);
+		cdata->idx = wm->idx;
+		cdata->wl = wm;
+
+		cdata->ft_template = xstrdup(template);
+		cdata->pane_id = ARRAY_ITEM(&find_list, i).pane_id;
+
+		format_add(cdata->ft, "line", "%u", i);
+		format_add(cdata->ft, "window_find_matches", "%s",
+		    ARRAY_ITEM(&find_list, i).list_ctx);
+		format_session(cdata->ft, s);
+		format_winlink(cdata->ft, s, wm);
+		format_window_pane(cdata->ft, wm->window->active);
+
+		window_choose_add(wl->window->active, cdata);
 	}
 
-	cdata = xmalloc(sizeof *cdata);
-	cdata->session = s;
-	cdata->session->references++;
-
-	window_choose_ready(wl->window->active,
-	    0, cmd_find_window_callback, cmd_find_window_free, cdata);
+	window_choose_ready(wl->window->active, 0, cmd_find_window_callback);
 
 out:
-	ARRAY_FREE(&list_idx);
-	ARRAY_FREE(&list_ctx);
-
-	return (0);
+	ARRAY_FREE(&find_list);
+	return (CMD_RETURN_NORMAL);
 }
 
 void
-cmd_find_window_callback(void *data, int idx)
+cmd_find_window_callback(struct window_choose_data *cdata)
 {
-	struct cmd_find_window_data	*cdata = data;
-	struct session			*s = cdata->session;
+	struct session		*s;
+	struct window_pane	*wp;
 
-	if (idx == -1)
+	if (cdata == NULL)
 		return;
+
+	s = cdata->start_session;
 	if (!session_alive(s))
 		return;
 
-	if (session_select(s, idx) == 0) {
+	wp = window_pane_at_index(cdata->wl->window, cdata->pane_id);
+	if (wp != NULL && window_pane_visible(wp))
+		window_set_active_pane(cdata->wl->window, wp);
+
+	if (session_select(s, cdata->idx) == 0) {
 		server_redraw_session(s);
 		recalculate_sizes();
 	}
 }
-
-void
-cmd_find_window_free(void *data)
-{
-	struct cmd_find_window_data	*cdata = data;
-
-	cdata->session->references--;
-	xfree(cdata);
-}

cmd-has-session.c

@@ -24,7 +24,7 @@
  * Cause client to report an error and exit with 1 if session doesn't exist.
  */
 
-int	cmd_has_session_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_has_session_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_has_session_entry = {
 	"has-session", "has",
@@ -32,17 +32,16 @@ const struct cmd_entry cmd_has_session_entry = {
 	CMD_TARGET_SESSION_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_has_session_exec
 };
 
-int
-cmd_has_session_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_has_session_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 
-	if (cmd_find_session(ctx, args_get(args, 't'), 0) == NULL)
-		return (-1);
+	if (cmd_find_session(cmdq, args_get(args, 't'), 0) == NULL)
+		return (CMD_RETURN_ERROR);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-if-shell.c

@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -28,33 +29,61 @@
  * Executes a tmux command if a shell command returns true or false.
  */
 
-int	cmd_if_shell_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_if_shell_exec(struct cmd *, struct cmd_q *);
 
 void	cmd_if_shell_callback(struct job *);
+void	cmd_if_shell_done(struct cmd_q *);
 void	cmd_if_shell_free(void *);
 
 const struct cmd_entry cmd_if_shell_entry = {
 	"if-shell", "if",
-	"", 2, 3,
-	"shell-command command [command]",
+	"bt:", 2, 3,
+	"[-b] " CMD_TARGET_PANE_USAGE " shell-command command [command]",
 	0,
 	NULL,
-	NULL,
 	cmd_if_shell_exec
 };
 
 struct cmd_if_shell_data {
 	char		*cmd_if;
 	char		*cmd_else;
-	struct cmd_ctx	 ctx;
+	struct cmd_q	*cmdq;
+	int		 bflag;
+	int		 started;
 };
 
-int
-cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
 	struct cmd_if_shell_data	*cdata;
-	const char			*shellcmd = args->argv[0];
+	char				*shellcmd;
+	struct client			*c;
+	struct session			*s = NULL;
+	struct winlink			*wl = NULL;
+	struct window_pane		*wp = NULL;
+	struct format_tree		*ft;
+
+	if (args_has(args, 't'))
+		wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
+	else {
+		c = cmd_find_client(cmdq, NULL, 1);
+		if (c != NULL && c->session != NULL) {
+			s = c->session;
+			wl = s->curw;
+			wp = wl->window->active;
+		}
+	}
+
+	ft = format_create();
+	if (s != NULL)
+		format_session(ft, s);
+	if (s != NULL && wl != NULL)
+		format_winlink(ft, s, wl);
+	if (wp != NULL)
+		format_window_pane(ft, wp);
+	shellcmd = format_expand(ft, args->argv[0]);
+	format_free(ft);
 
 	cdata = xmalloc(sizeof *cdata);
 	cdata->cmd_if = xstrdup(args->argv[1]);
@@ -62,61 +91,88 @@ cmd_if_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
 		cdata->cmd_else = xstrdup(args->argv[2]);
 	else
 		cdata->cmd_else = NULL;
-	memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
+	cdata->bflag = args_has(args, 'b');
 
-	if (ctx->cmdclient != NULL)
-		ctx->cmdclient->references++;
-	if (ctx->curclient != NULL)
-		ctx->curclient->references++;
+	cdata->started = 0;
+	cdata->cmdq = cmdq;
+	cmdq->references++;
 
-	job_run(shellcmd, cmd_if_shell_callback, cmd_if_shell_free, cdata);
+	job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata);
+	free(shellcmd);
 
-	return (1);	/* don't let client exit */
+	if (cdata->bflag)
+		return (CMD_RETURN_NORMAL);
+	return (CMD_RETURN_WAIT);
 }
 
 void
 cmd_if_shell_callback(struct job *job)
 {
 	struct cmd_if_shell_data	*cdata = job->data;
-	struct cmd_ctx			*ctx = &cdata->ctx;
+	struct cmd_q			*cmdq = cdata->cmdq, *cmdq1;
 	struct cmd_list			*cmdlist;
 	char				*cause, *cmd;
 
-	if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0) {
+	if (cmdq->dead)
+		return;
+
+	if (!WIFEXITED(job->status) || WEXITSTATUS(job->status) != 0)
 		cmd = cdata->cmd_else;
-		if (cmd == NULL)
-			return;
-	} else
+	else
 		cmd = cdata->cmd_if;
-	if (cmd_string_parse(cmd, &cmdlist, &cause) != 0) {
+	if (cmd == NULL)
+		return;
+
+	if (cmd_string_parse(cmd, &cmdlist, NULL, 0, &cause) != 0) {
 		if (cause != NULL) {
-			ctx->error(ctx, "%s", cause);
-			xfree(cause);
+			cmdq_error(cmdq, "%s", cause);
+			free(cause);
 		}
 		return;
 	}
 
-	cmd_list_exec(cmdlist, ctx);
+	cdata->started = 1;
+
+	cmdq1 = cmdq_new(cmdq->client);
+	cmdq1->emptyfn = cmd_if_shell_done;
+	cmdq1->data = cdata;
+
+	cmdq_run(cmdq1, cmdlist);
 	cmd_list_free(cmdlist);
 }
 
+void
+cmd_if_shell_done(struct cmd_q *cmdq1)
+{
+	struct cmd_if_shell_data	*cdata = cmdq1->data;
+	struct cmd_q			*cmdq = cdata->cmdq;
+
+	if (cmdq1->client_exit >= 0)
+		cmdq->client_exit = cmdq1->client_exit;
+
+	if (!cmdq_free(cmdq) && !cdata->bflag)
+		cmdq_continue(cmdq);
+
+	cmdq_free(cmdq1);
+
+	free(cdata->cmd_else);
+	free(cdata->cmd_if);
+	free(cdata);
+}
+
 void
 cmd_if_shell_free(void *data)
 {
 	struct cmd_if_shell_data	*cdata = data;
-	struct cmd_ctx			*ctx = &cdata->ctx;
-	struct msg_exit_data		 exitdata;
+	struct cmd_q			*cmdq = cdata->cmdq;
 
-	if (ctx->cmdclient != NULL) {
-		ctx->cmdclient->references--;
-		exitdata.retcode = ctx->cmdclient->retcode;
-		ctx->cmdclient->flags |= CLIENT_EXIT;
-	}
-	if (ctx->curclient != NULL)
-		ctx->curclient->references--;
+	if (cdata->started)
+		return;
 
-	if (cdata->cmd_else != NULL)
-		xfree(cdata->cmd_else);
-	xfree(cdata->cmd_if);
-	xfree(cdata);
+	if (!cmdq_free(cmdq) && !cdata->bflag)
+		cmdq_continue(cmdq);
+
+	free(cdata->cmd_else);
+	free(cdata->cmd_if);
+	free(cdata);
 }

cmd-join-pane.c

@@ -1,6 +1,7 @@
 /* $Id$ */
 
 /*
+ * Copyright (c) 2011 George Nachman <tmux@georgester.com>
  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
@@ -24,18 +25,28 @@
 #include "tmux.h"
 
 /*
- * Join a pane into another (like split/swap/kill).
+ * Join or move a pane into another (like split/swap/kill).
  */
 
-void	cmd_join_pane_key_binding(struct cmd *, int);
-int	cmd_join_pane_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_join_pane_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_join_pane_exec(struct cmd *, struct cmd_q *);
+
+enum cmd_retval	 join_pane(struct cmd *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_join_pane_entry = {
 	"join-pane", "joinp",
-	"dhvp:l:s:t:", 0, 0,
-	"[-dhv] [-p percentage|-l size] [-s src-pane] [-t dst-pane]",
+	"bdhvp:l:s:t:", 0, 0,
+	"[-bdhv] [-p percentage|-l size] [-s src-pane] [-t dst-pane]",
 	0,
 	cmd_join_pane_key_binding,
+	cmd_join_pane_exec
+};
+
+const struct cmd_entry cmd_move_pane_entry = {
+	"move-pane", "movep",
+	"bdhvp:l:s:t:", 0, 0,
+	"[-bdhv] [-p percentage|-l size] [-s src-pane] [-t dst-pane]",
+	0,
 	NULL,
 	cmd_join_pane_exec
 };
@@ -54,8 +65,14 @@ cmd_join_pane_key_binding(struct cmd *self, int key)
 	}
 }
 
-int
-cmd_join_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_join_pane_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	return (join_pane(self, cmdq, self->entry == &cmd_join_pane_entry));
+}
+
+enum cmd_retval
+join_pane(struct cmd *self, struct cmd_q *cmdq, int not_same_window)
 {
 	struct args		*args = self->args;
 	struct session		*dst_s;
@@ -67,20 +84,26 @@ cmd_join_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	enum layout_type	 type;
 	struct layout_cell	*lc;
 
-	dst_wl = cmd_find_pane(ctx, args_get(args, 't'), &dst_s, &dst_wp);
+	dst_wl = cmd_find_pane(cmdq, args_get(args, 't'), &dst_s, &dst_wp);
 	if (dst_wl == NULL)
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	dst_w = dst_wl->window;
 	dst_idx = dst_wl->idx;
+	server_unzoom_window(dst_w);
 
-	src_wl = cmd_find_pane(ctx, args_get(args, 's'), NULL, &src_wp);
+	src_wl = cmd_find_pane(cmdq, args_get(args, 's'), NULL, &src_wp);
 	if (src_wl == NULL)
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	src_w = src_wl->window;
+	server_unzoom_window(src_w);
 
-	if (src_w == dst_w) {
-		ctx->error(ctx, "can't join a pane to its own window");
-		return (-1);
+	if (not_same_window && src_w == dst_w) {
+		cmdq_error(cmdq, "can't join a pane to its own window");
+		return (CMD_RETURN_ERROR);
+	}
+	if (!not_same_window && src_wp == dst_wp) {
+		cmdq_error(cmdq, "source and target panes must be different");
+		return (CMD_RETURN_ERROR);
 	}
 
 	type = LAYOUT_TOPBOTTOM;
@@ -91,26 +114,26 @@ cmd_join_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (args_has(args, 'l')) {
 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
 		if (cause != NULL) {
-			ctx->error(ctx, "size %s", cause);
-			xfree(cause);
-			return (-1);
+			cmdq_error(cmdq, "size %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 	} else if (args_has(args, 'p')) {
 		percentage = args_strtonum(args, 'p', 0, 100, &cause);
 		if (cause != NULL) {
-			ctx->error(ctx, "percentage %s", cause);
-			xfree(cause);
-			return (-1);
+			cmdq_error(cmdq, "percentage %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 		if (type == LAYOUT_TOPBOTTOM)
 			size = (dst_wp->sy * percentage) / 100;
 		else
 			size = (dst_wp->sx * percentage) / 100;
 	}
-
-	if ((lc = layout_split_pane(dst_wp, type, size)) == NULL) {
-		ctx->error(ctx, "create pane failed: pane too small");
-		return (-1);
+	lc = layout_split_pane(dst_wp, type, size, args_has(args, 'b'));
+	if (lc == NULL) {
+		cmdq_error(cmdq, "create pane failed: pane too small");
+		return (CMD_RETURN_ERROR);
 	}
 
 	layout_close_pane(src_wp);
@@ -124,6 +147,8 @@ cmd_join_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	if (window_count_panes(src_w) == 0)
 		server_kill_window(src_w);
+	else
+		notify_window_layout_changed(src_w);
 
 	src_wp->window = dst_w;
 	TAILQ_INSERT_AFTER(&dst_w->panes, dst_wp, src_wp, entry);
@@ -141,5 +166,6 @@ cmd_join_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	} else
 		server_status_session(dst_s);
 
-	return (0);
+	notify_window_layout_changed(dst_w);
+	return (CMD_RETURN_NORMAL);
 }

cmd-kill-pane.c

@@ -26,7 +26,7 @@
  * Kill pane.
  */
 
-int	cmd_kill_pane_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_kill_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_kill_pane_entry = {
 	"kill-pane", "killp",
@@ -34,36 +34,33 @@ const struct cmd_entry cmd_kill_pane_entry = {
 	"[-a] " CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_kill_pane_exec
 };
 
-int
-cmd_kill_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_kill_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
-	struct window_pane	*loopwp, *nextwp, *wp;
+	struct window_pane	*loopwp, *tmpwp, *wp;
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
+	server_unzoom_window(wl->window);
 
 	if (window_count_panes(wl->window) == 1) {
 		/* Only one pane, kill the window. */
 		server_kill_window(wl->window);
 		recalculate_sizes();
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 
 	if (args_has(self->args, 'a')) {
-		loopwp = TAILQ_FIRST(&wl->window->panes);
-		while (loopwp != NULL) {
-			nextwp = TAILQ_NEXT(loopwp, entry);
-			if (loopwp != wp) {
-				layout_close_pane(loopwp);
-				window_remove_pane(wl->window, loopwp);
-			}
-			loopwp = nextwp;
+		TAILQ_FOREACH_SAFE(loopwp, &wl->window->panes, entry, tmpwp) {
+			if (loopwp == wp)
+				continue;
+			layout_close_pane(loopwp);
+			window_remove_pane(wl->window, loopwp);
 		}
 	} else {
 		layout_close_pane(wp);
@@ -71,5 +68,5 @@ cmd_kill_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	}
 	server_redraw_window(wl->window);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-kill-server.c

@@ -27,7 +27,7 @@
  * Kill the server and do nothing else.
  */
 
-int	cmd_kill_server_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_kill_server_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_kill_server_entry = {
 	"kill-server", NULL,
@@ -35,15 +35,23 @@ const struct cmd_entry cmd_kill_server_entry = {
 	"",
 	0,
 	NULL,
+	cmd_kill_server_exec
+};
+
+const struct cmd_entry cmd_start_server_entry = {
+	"start-server", "start",
+	"", 0, 0,
+	"",
+	CMD_STARTSERVER,
 	NULL,
 	cmd_kill_server_exec
 };
 
-/* ARGSUSED */
-int
-cmd_kill_server_exec(unused struct cmd *self, unused struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_kill_server_exec(struct cmd *self, unused struct cmd_q *cmdq)
 {
-	kill(getpid(), SIGTERM);
+	if (self->entry == &cmd_kill_server_entry)
+		kill(getpid(), SIGTERM);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-kill-session.c

@@ -27,29 +27,36 @@
  * Note this deliberately has no alias to make it hard to hit by accident.
  */
 
-int	cmd_kill_session_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_kill_session_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_kill_session_entry = {
 	"kill-session", NULL,
-	"t:", 0, 0,
-	CMD_TARGET_SESSION_USAGE,
+	"at:", 0, 0,
+	"[-a] " CMD_TARGET_SESSION_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_kill_session_exec
 };
 
-int
-cmd_kill_session_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_kill_session_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
-	struct session	*s;
+	struct session	*s, *s2, *s3;
 
-	if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
-		return (-1);
+	if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
-	server_destroy_session(s);
-	session_destroy(s);
-
-	return (0);
+	if (args_has(args, 'a')) {
+		RB_FOREACH_SAFE(s2, sessions, &sessions, s3) {
+			if (s != s2) {
+				server_destroy_session(s2);
+				session_destroy(s2);
+			}
+		}
+	} else {
+		server_destroy_session(s);
+		session_destroy(s);
+	}
+	return (CMD_RETURN_NORMAL);
 }

cmd-kill-window.c

@@ -24,29 +24,35 @@
  * Destroy window.
  */
 
-int	cmd_kill_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_kill_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_kill_window_entry = {
 	"kill-window", "killw",
-	"t:", 0, 0,
-	CMD_TARGET_WINDOW_USAGE,
+	"at:", 0, 0,
+	"[-a] " CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_kill_window_exec
 };
 
-int
-cmd_kill_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_kill_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
-	struct winlink	*wl;
+	struct winlink	*wl, *wl2, *wl3;
+	struct session	*s;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if (args_has(args, 'a')) {
+		RB_FOREACH_SAFE(wl2, winlinks, &s->windows, wl3) {
+			if (wl != wl2)
+				server_kill_window(wl2->window);
+		}
+	} else
+		server_kill_window(wl->window);
 
-	server_kill_window(wl->window);
 	recalculate_sizes();
-
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-link-window.c

@@ -26,7 +26,7 @@
  * Link a window into another session.
  */
 
-int	cmd_link_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_link_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_link_window_entry = {
 	"link-window", "linkw",
@@ -34,12 +34,11 @@ const struct cmd_entry cmd_link_window_entry = {
 	"[-dk] " CMD_SRCDST_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_link_window_exec
 };
 
-int
-cmd_link_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_link_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*src, *dst;
@@ -47,19 +46,19 @@ cmd_link_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char		*cause;
 	int		 idx, kflag, dflag;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 's'), &src)) == NULL)
-		return (-1);
-	if ((idx = cmd_find_index(ctx, args_get(args, 't'), &dst)) == -2)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 's'), &src)) == NULL)
+		return (CMD_RETURN_ERROR);
+	if ((idx = cmd_find_index(cmdq, args_get(args, 't'), &dst)) == -2)
+		return (CMD_RETURN_ERROR);
 
 	kflag = args_has(self->args, 'k');
 	dflag = args_has(self->args, 'd');
 	if (server_link_window(src, wl, dst, idx, kflag, !dflag, &cause) != 0) {
-		ctx->error(ctx, "can't link window: %s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "can't link window: %s", cause);
+		free(cause);
+		return (CMD_RETURN_ERROR);
 	}
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-buffers.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -26,33 +27,42 @@
  * List paste buffers.
  */
 
-int	cmd_list_buffers_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_buffers_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_list_buffers_entry = {
 	"list-buffers", "lsb",
-	"", 0, 0,
-	"",
+	"F:", 0, 0,
+	"[-F format]",
 	0,
 	NULL,
-	NULL,
 	cmd_list_buffers_exec
 };
 
-/* ARGSUSED */
-int
-cmd_list_buffers_exec(unused struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_buffers_exec(unused struct cmd *self, struct cmd_q *cmdq)
 {
+	struct args		*args = self->args;
 	struct paste_buffer	*pb;
+	struct format_tree	*ft;
 	u_int			 idx;
-	char			*tmp;
+	char			*line;
+	const char		*template;
+
+	if ((template = args_get(args, 'F')) == NULL)
+		template = LIST_BUFFERS_TEMPLATE;
 
 	idx = 0;
 	while ((pb = paste_walk_stack(&global_buffers, &idx)) != NULL) {
-		tmp = paste_print(pb, 50);
-		ctx->print(ctx,
-		    "%u: %zu bytes: \"%s\"", idx - 1, pb->size, tmp);
-		xfree(tmp);
+		ft = format_create();
+		format_add(ft, "line", "%u", idx - 1);
+		format_paste_buffer(ft, pb);
+
+		line = format_expand(ft, template);
+		cmdq_print(cmdq, "%s", line);
+		free(line);
+
+		format_free(ft);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-clients.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 
@@ -27,7 +28,7 @@
  * List all clients.
  */
 
-int	cmd_list_clients_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_list_clients_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_list_clients_entry = {
 	"list-clients", "lsc",
@@ -35,13 +36,11 @@ const struct cmd_entry cmd_list_clients_entry = {
 	"[-F format] " CMD_TARGET_SESSION_USAGE,
 	CMD_READONLY,
 	NULL,
-	NULL,
 	cmd_list_clients_exec
 };
 
-/* ARGSUSED */
-int
-cmd_list_clients_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_clients_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args 		*args = self->args;
 	struct client		*c;
@@ -52,19 +51,14 @@ cmd_list_clients_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char			*line;
 
 	if (args_has(args, 't')) {
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 		if (s == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 	} else
 		s = NULL;
 
-	template = args_get(args, 'F');
-	if (template == NULL) {
-		template = "#{client_tty}: #{session_name} "
-		    "[#{client_width}x#{client_height} #{client_termname}]"
-		    "#{?client_utf8, (utf8),}"
-		    "#{?client_readonly, (ro),}";
-	}
+	if ((template = args_get(args, 'F')) == NULL)
+		template = LIST_CLIENTS_TEMPLATE;
 
 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
@@ -80,11 +74,11 @@ cmd_list_clients_exec(struct cmd *self, struct cmd_ctx *ctx)
 		format_client(ft, c);
 
 		line = format_expand(ft, template);
-		ctx->print(ctx, "%s", line);
-		xfree(line);
+		cmdq_print(cmdq, "%s", line);
+		free(line);
 
 		format_free(ft);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-commands.c

@@ -24,7 +24,7 @@
  * List all commands with usages.
  */
 
-int	cmd_list_commands_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_commands_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_list_commands_entry = {
 	"list-commands", "lscm",
@@ -32,18 +32,23 @@ const struct cmd_entry cmd_list_commands_entry = {
 	"",
 	0,
 	NULL,
-	NULL,
 	cmd_list_commands_exec
 };
 
-/* ARGSUSED */
-int
-cmd_list_commands_exec(unused struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_commands_exec(unused struct cmd *self, struct cmd_q *cmdq)
 {
 	const struct cmd_entry 	      **entryp;
 
-	for (entryp = cmd_table; *entryp != NULL; entryp++)
-		ctx->print(ctx, "%s %s", (*entryp)->name, (*entryp)->usage);
+	for (entryp = cmd_table; *entryp != NULL; entryp++) {
+		if ((*entryp)->alias != NULL) {
+			cmdq_print(cmdq, "%s (%s) %s", (*entryp)->name,
+			    (*entryp)->alias, (*entryp)->usage);
+		} else {
+			cmdq_print(cmdq, "%s %s", (*entryp)->name,
+			    (*entryp)->usage);
+		}
+	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-keys.c

@@ -26,9 +26,8 @@
  * List key bindings.
  */
 
-int	cmd_list_keys_exec(struct cmd *, struct cmd_ctx *);
-
-int	cmd_list_keys_table(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_keys_exec(struct cmd *, struct cmd_q *);
+enum cmd_retval	 cmd_list_keys_table(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_list_keys_entry = {
 	"list-keys", "lsk",
@@ -36,12 +35,11 @@ const struct cmd_entry cmd_list_keys_entry = {
 	"[-t key-table]",
 	0,
 	NULL,
-	NULL,
 	cmd_list_keys_exec
 };
 
-int
-cmd_list_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_keys_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct key_binding	*bd;
@@ -51,7 +49,7 @@ cmd_list_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 	int			 width, keywidth;
 
 	if (args_has(args, 't'))
-		return (cmd_list_keys_table(self, ctx));
+		return (cmd_list_keys_table(self, cmdq));
 
 	width = 0;
 
@@ -92,14 +90,14 @@ cmd_list_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 			continue;
 
 		cmd_list_print(bd->cmdlist, tmp + used, (sizeof tmp) - used);
-		ctx->print(ctx, "bind-key %s", tmp);
+		cmdq_print(cmdq, "bind-key %s", tmp);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
-int
-cmd_list_keys_table(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_keys_table(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
 	const char			*tablename;
@@ -110,8 +108,8 @@ cmd_list_keys_table(struct cmd *self, struct cmd_ctx *ctx)
 
 	tablename = args_get(args, 't');
 	if ((mtab = mode_key_findtable(tablename)) == NULL) {
-		ctx->error(ctx, "unknown key table: %s", tablename);
-		return (-1);
+		cmdq_error(cmdq, "unknown key table: %s", tablename);
+		return (CMD_RETURN_ERROR);
 	}
 
 	width = 0;
@@ -139,11 +137,14 @@ cmd_list_keys_table(struct cmd *self, struct cmd_ctx *ctx)
 			mode = "c";
 		cmdstr = mode_key_tostring(mtab->cmdstr, mbind->cmd);
 		if (cmdstr != NULL) {
-			ctx->print(ctx, "bind-key -%st %s%s %*s %s",
+			cmdq_print(cmdq, "bind-key -%st %s%s %*s %s%s%s%s",
 			    mode, any_mode && *mode == '\0' ? " " : "",
-			    mtab->name, (int) width, key, cmdstr);
+			    mtab->name, (int) width, key, cmdstr,
+			    mbind->arg != NULL ? " \"" : "",
+			    mbind->arg != NULL ? mbind->arg : "",
+			    mbind->arg != NULL ? "\"": "");
 		}
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-panes.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -26,70 +27,69 @@
  * List panes on given window.
  */
 
-int	cmd_list_panes_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_panes_exec(struct cmd *, struct cmd_q *);
 
-void	cmd_list_panes_server(struct cmd *, struct cmd_ctx *);
+void	cmd_list_panes_server(struct cmd *, struct cmd_q *);
 void	cmd_list_panes_session(
-	    struct cmd *, struct session *, struct cmd_ctx *, int);
+	    struct cmd *, struct session *, struct cmd_q *, int);
 void	cmd_list_panes_window(struct cmd *,
-	    struct session *, struct winlink *, struct cmd_ctx *, int);
+	    struct session *, struct winlink *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_list_panes_entry = {
 	"list-panes", "lsp",
 	"asF:t:", 0, 0,
-	"[-as] [-F format] [-t target]",
+	"[-as] [-F format] " CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_list_panes_exec
 };
 
-int
-cmd_list_panes_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_panes_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*s;
 	struct winlink	*wl;
 
 	if (args_has(args, 'a'))
-		cmd_list_panes_server(self, ctx);
+		cmd_list_panes_server(self, cmdq);
 	else if (args_has(args, 's')) {
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 		if (s == NULL)
-			return (-1);
-		cmd_list_panes_session(self, s, ctx, 1);
+			return (CMD_RETURN_ERROR);
+		cmd_list_panes_session(self, s, cmdq, 1);
 	} else {
-		wl = cmd_find_window(ctx, args_get(args, 't'), &s);
+		wl = cmd_find_window(cmdq, args_get(args, 't'), &s);
 		if (wl == NULL)
-			return (-1);
-		cmd_list_panes_window(self, s, wl, ctx, 0);
+			return (CMD_RETURN_ERROR);
+		cmd_list_panes_window(self, s, wl, cmdq, 0);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
 void
-cmd_list_panes_server(struct cmd *self, struct cmd_ctx *ctx)
+cmd_list_panes_server(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct session	*s;
 
 	RB_FOREACH(s, sessions, &sessions)
-		cmd_list_panes_session(self, s, ctx, 2);
+		cmd_list_panes_session(self, s, cmdq, 2);
 }
 
 void
 cmd_list_panes_session(
-    struct cmd *self, struct session *s, struct cmd_ctx *ctx, int type)
+    struct cmd *self, struct session *s, struct cmd_q *cmdq, int type)
 {
 	struct winlink	*wl;
 
 	RB_FOREACH(wl, winlinks, &s->windows)
-		cmd_list_panes_window(self, s, wl, ctx, type);
+		cmd_list_panes_window(self, s, wl, cmdq, type);
 }
 
 void
 cmd_list_panes_window(struct cmd *self,
-    struct session *s, struct winlink *wl, struct cmd_ctx *ctx, int type)
+    struct session *s, struct winlink *wl, struct cmd_q *cmdq, int type)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
@@ -134,8 +134,8 @@ cmd_list_panes_window(struct cmd *self,
 		format_window_pane(ft, wp);
 
 		line = format_expand(ft, template);
-		ctx->print(ctx, "%s", line);
-		xfree(line);
+		cmdq_print(cmdq, "%s", line);
+		free(line);
 
 		format_free(ft);
 		n++;

cmd-list-sessions.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 #include <time.h>
 
@@ -27,7 +28,7 @@
  * List all sessions.
  */
 
-int	cmd_list_sessions_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_sessions_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_list_sessions_entry = {
 	"list-sessions", "ls",
@@ -35,12 +36,11 @@ const struct cmd_entry cmd_list_sessions_entry = {
 	"[-F format]",
 	0,
 	NULL,
-	NULL,
 	cmd_list_sessions_exec
 };
 
-int
-cmd_list_sessions_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_sessions_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct session		*s;
@@ -49,14 +49,8 @@ cmd_list_sessions_exec(struct cmd *self, struct cmd_ctx *ctx)
 	const char		*template;
 	char			*line;
 
-	template = args_get(args, 'F');
-	if (template == NULL) {
-		template = "#{session_name}: #{session_windows} windows "
-		    "(created #{session_created_string}) [#{session_width}x"
-		    "#{session_height}]#{?session_grouped, (group ,}"
-		    "#{session_group}#{?session_grouped,),}"
-		    "#{?session_attached, (attached),}";
-	}
+	if ((template = args_get(args, 'F')) == NULL)
+		template = LIST_SESSIONS_TEMPLATE;
 
 	n = 0;
 	RB_FOREACH(s, sessions, &sessions) {
@@ -65,12 +59,12 @@ cmd_list_sessions_exec(struct cmd *self, struct cmd_ctx *ctx)
 		format_session(ft, s);
 
 		line = format_expand(ft, template);
-		ctx->print(ctx, "%s", line);
-		xfree(line);
+		cmdq_print(cmdq, "%s", line);
+		free(line);
 
 		format_free(ft);
 		n++;
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-list-windows.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -26,52 +27,51 @@
  * List windows on given session.
  */
 
-int	cmd_list_windows_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_list_windows_exec(struct cmd *, struct cmd_q *);
 
-void	cmd_list_windows_server(struct cmd *, struct cmd_ctx *);
+void	cmd_list_windows_server(struct cmd *, struct cmd_q *);
 void	cmd_list_windows_session(
-	    struct cmd *, struct session *, struct cmd_ctx *, int);
+	    struct cmd *, struct session *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_list_windows_entry = {
 	"list-windows", "lsw",
-	"aF:t:", 0, 0,
+	"F:at:", 0, 0,
 	"[-a] [-F format] " CMD_TARGET_SESSION_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_list_windows_exec
 };
 
-int
-cmd_list_windows_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_list_windows_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*s;
 
 	if (args_has(args, 'a'))
-		cmd_list_windows_server(self, ctx);
+		cmd_list_windows_server(self, cmdq);
 	else {
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 		if (s == NULL)
-			return (-1);
-		cmd_list_windows_session(self, s, ctx, 0);
+			return (CMD_RETURN_ERROR);
+		cmd_list_windows_session(self, s, cmdq, 0);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
 void
-cmd_list_windows_server(struct cmd *self, struct cmd_ctx *ctx)
+cmd_list_windows_server(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct session	*s;
 
 	RB_FOREACH(s, sessions, &sessions)
-		cmd_list_windows_session(self, s, ctx, 1);
+		cmd_list_windows_session(self, s, cmdq, 1);
 }
 
 void
 cmd_list_windows_session(
-    struct cmd *self, struct session *s, struct cmd_ctx *ctx, int type)
+    struct cmd *self, struct session *s, struct cmd_q *cmdq, int type)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
@@ -84,18 +84,10 @@ cmd_list_windows_session(
 	if (template == NULL) {
 		switch (type) {
 		case 0:
-			template = "#{window_index}: "
-			    "#{window_name} "
-			    "[#{window_width}x#{window_height}] "
-			    "[layout #{window_layout}]"
-			    "#{?window_active, (active),}";
+			template = LIST_WINDOWS_TEMPLATE;
 			break;
 		case 1:
-			template = "#{session_name}:#{window_index}: "
-			    "#{window_name} "
-			    "[#{window_width}x#{window_height}] "
-			    "[layout #{window_layout}]"
-			    "#{?window_active, (active),}";
+			template = LIST_WINDOWS_WITH_SESSION_TEMPLATE;
 			break;
 		}
 	}
@@ -106,10 +98,11 @@ cmd_list_windows_session(
 		format_add(ft, "line", "%u", n);
 		format_session(ft, s);
 		format_winlink(ft, s, wl);
+		format_window_pane(ft, wl->window->active);
 
 		line = format_expand(ft, template);
-		ctx->print(ctx, "%s", line);
-		xfree(line);
+		cmdq_print(cmdq, "%s", line);
+		free(line);
 
 		format_free(ft);
 		n++;

cmd-list.c

@@ -18,12 +18,14 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
 
 struct cmd_list *
-cmd_list_parse(int argc, char **argv, char **cause)
+cmd_list_parse(int argc, char **argv, const char* file, u_int line,
+    char **cause)
 {
 	struct cmd_list	*cmdlist;
 	struct cmd	*cmd;
@@ -33,7 +35,7 @@ cmd_list_parse(int argc, char **argv, char **cause)
 
 	copy_argv = cmd_copy_argv(argc, argv);
 
-	cmdlist = xmalloc(sizeof *cmdlist);
+	cmdlist = xcalloc(1, sizeof *cmdlist);
 	cmdlist->references = 1;
 	TAILQ_INIT(&cmdlist->list);
 
@@ -54,7 +56,7 @@ cmd_list_parse(int argc, char **argv, char **cause)
 		if (arglen != 1)
 			new_argc++;
 
-		cmd = cmd_parse(new_argc, new_argv, cause);
+		cmd = cmd_parse(new_argc, new_argv, file, line, cause);
 		if (cmd == NULL)
 			goto bad;
 		TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
@@ -63,7 +65,8 @@ cmd_list_parse(int argc, char **argv, char **cause)
 	}
 
 	if (lastsplit != argc) {
-		cmd = cmd_parse(argc - lastsplit, copy_argv + lastsplit, cause);
+		cmd = cmd_parse(argc - lastsplit, copy_argv + lastsplit,
+		    file, line, cause);
 		if (cmd == NULL)
 			goto bad;
 		TAILQ_INSERT_TAIL(&cmdlist->list, cmd, qentry);
@@ -78,56 +81,22 @@ bad:
 	return (NULL);
 }
 
-int
-cmd_list_exec(struct cmd_list *cmdlist, struct cmd_ctx *ctx)
-{
-	struct cmd	*cmd;
-	int		 n, retval;
-
-	retval = 0;
-	TAILQ_FOREACH(cmd, &cmdlist->list, qentry) {
-		if ((n = cmd_exec(cmd, ctx)) == -1)
-			return (-1);
-
-		/*
-		 * A 1 return value means the command client is being attached
-		 * (sent MSG_READY).
-		 */
-		if (n == 1) {
-			retval = 1;
-
-			/*
-			 * The command client has been attached, so mangle the
-			 * context to treat any following commands as if they
-			 * were called from inside.
-			 */
-			if (ctx->curclient == NULL) {
-				ctx->curclient = ctx->cmdclient;
-				ctx->cmdclient = NULL;
-
-				ctx->error = key_bindings_error;
-				ctx->print = key_bindings_print;
-				ctx->info = key_bindings_info;
-			}
-		}
-	}
-	return (retval);
-}
-
 void
 cmd_list_free(struct cmd_list *cmdlist)
 {
-	struct cmd	*cmd;
+	struct cmd	*cmd, *cmd1;
 
 	if (--cmdlist->references != 0)
 		return;
 
-	while (!TAILQ_EMPTY(&cmdlist->list)) {
-		cmd = TAILQ_FIRST(&cmdlist->list);
+	TAILQ_FOREACH_SAFE(cmd, &cmdlist->list, qentry, cmd1) {
 		TAILQ_REMOVE(&cmdlist->list, cmd, qentry);
-		cmd_free(cmd);
+		args_free(cmd->args);
+		free(cmd->file);
+		free(cmd);
 	}
-	xfree(cmdlist);
+
+	free(cmdlist);
 }
 
 size_t

cmd-load-buffer.c

@@ -19,6 +19,7 @@
 #include <sys/types.h>
 
 #include <errno.h>
+#include <fcntl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -30,8 +31,8 @@
  * Loads a paste buffer from a file.
  */
 
-int	cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
-void	cmd_load_buffer_callback(struct client *, void *);
+enum cmd_retval	 cmd_load_buffer_exec(struct cmd *, struct cmd_q *);
+void		 cmd_load_buffer_callback(struct client *, int, void *);
 
 const struct cmd_entry cmd_load_buffer_entry = {
 	"load-buffer", "loadb",
@@ -39,77 +40,61 @@ const struct cmd_entry cmd_load_buffer_entry = {
 	CMD_BUFFER_USAGE " path",
 	0,
 	NULL,
-	NULL,
 	cmd_load_buffer_exec
 };
 
-int
-cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_load_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
-	struct client	*c = ctx->cmdclient;
+	struct client	*c = cmdq->client;
 	struct session  *s;
 	FILE		*f;
-	const char	*path, *newpath, *wd;
+	const char	*path;
 	char		*pdata, *new_pdata, *cause;
 	size_t		 psize;
 	u_int		 limit;
-	int		 ch, buffer;
-	int		*buffer_ptr;
+	int		 ch, error, buffer, *buffer_ptr, cwd, fd;
 
 	if (!args_has(args, 'b'))
 		buffer = -1;
 	else {
 		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 		if (cause != NULL) {
-			ctx->error(ctx, "buffer %s", cause);
-			xfree(cause);
-			return (-1);
+			cmdq_error(cmdq, "buffer %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
 	path = args->argv[0];
 	if (strcmp(path, "-") == 0) {
-		if (c == NULL) {
-			ctx->error(ctx, "%s: can't read from stdin", path);
-			return (-1);
-		}
-		if (c->flags & CLIENT_TERMINAL) {
-			ctx->error(ctx, "%s: stdin is a tty", path);
-			return (-1);
-		}
-		if (c->stdin_fd == -1) {
-			ctx->error(ctx, "%s: can't read from stdin", path);
-			return (-1);
-		}
-
 		buffer_ptr = xmalloc(sizeof *buffer_ptr);
 		*buffer_ptr = buffer;
 
-		c->stdin_data = buffer_ptr;
-		c->stdin_callback = cmd_load_buffer_callback;
-
-		c->references++;
-		bufferevent_enable(c->stdin_event, EV_READ);
-		return (1);
+		error = server_set_stdin_callback(c, cmd_load_buffer_callback,
+		    buffer_ptr, &cause);
+		if (error != 0) {
+			cmdq_error(cmdq, "%s: %s", path, cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
+		}
+		return (CMD_RETURN_WAIT);
 	}
 
-	if (c != NULL)
-		wd = c->cwd;
-	else if ((s = cmd_current_session(ctx, 0)) != NULL) {
-		wd = options_get_string(&s->options, "default-path");
-		if (*wd == '\0')
-			wd = s->cwd;
-	} else
-		wd = NULL;
-	if (wd != NULL && *wd != '\0') {
-		newpath = get_full_path(wd, path);
-		if (newpath != NULL)
-			path = newpath;
-	}
-	if ((f = fopen(path, "rb")) == NULL) {
-		ctx->error(ctx, "%s: %s", path, strerror(errno));
-		return (-1);
+	if (c != NULL && c->session == NULL)
+		cwd = c->cwd;
+	else if ((s = cmd_current_session(cmdq, 0)) != NULL)
+		cwd = s->cwd;
+	else
+		cwd = AT_FDCWD;
+
+	if ((fd = openat(cwd, path, O_RDONLY)) == -1 ||
+	    (f = fdopen(fd, "rb")) == NULL) {
+		if (fd != -1)
+			close(fd);
+		cmdq_error(cmdq, "%s: %s", path, strerror(errno));
+		return (CMD_RETURN_ERROR);
 	}
 
 	pdata = NULL;
@@ -117,14 +102,14 @@ cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 	while ((ch = getc(f)) != EOF) {
 		/* Do not let the server die due to memory exhaustion. */
 		if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
-			ctx->error(ctx, "realloc error: %s", strerror(errno));
+			cmdq_error(cmdq, "realloc error: %s", strerror(errno));
 			goto error;
 		}
 		pdata = new_pdata;
 		pdata[psize++] = ch;
 	}
 	if (ferror(f)) {
-		ctx->error(ctx, "%s: read error", path);
+		cmdq_error(cmdq, "%s: read error", path);
 		goto error;
 	}
 	if (pdata != NULL)
@@ -135,55 +120,60 @@ cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 	limit = options_get_number(&global_options, "buffer-limit");
 	if (buffer == -1) {
 		paste_add(&global_buffers, pdata, psize, limit);
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 	if (paste_replace(&global_buffers, buffer, pdata, psize) != 0) {
-		ctx->error(ctx, "no buffer %d", buffer);
-		xfree(pdata);
-		return (-1);
+		cmdq_error(cmdq, "no buffer %d", buffer);
+		free(pdata);
+		return (CMD_RETURN_ERROR);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 
 error:
-	if (pdata != NULL)
-		xfree(pdata);
+	free(pdata);
 	if (f != NULL)
 		fclose(f);
-	return (-1);
+	return (CMD_RETURN_ERROR);
 }
 
 void
-cmd_load_buffer_callback(struct client *c, void *data)
+cmd_load_buffer_callback(struct client *c, int closed, void *data)
 {
 	int	*buffer = data;
 	char	*pdata;
 	size_t	 psize;
 	u_int	 limit;
 
-	/*
-	 * Event callback has already checked client is not dead and reduced
-	 * its reference count. But tell it to exit.
-	 */
-	c->flags |= CLIENT_EXIT;
-
-	psize = EVBUFFER_LENGTH(c->stdin_event->input);
-	if (psize == 0 || (pdata = malloc(psize + 1)) == NULL) {
-		xfree(data);
+	if (!closed)
 		return;
+	c->stdin_callback = NULL;
+
+	c->references--;
+	if (c->flags & CLIENT_DEAD)
+		return;
+
+	psize = EVBUFFER_LENGTH(c->stdin_data);
+	if (psize == 0 || (pdata = malloc(psize + 1)) == NULL) {
+		free(data);
+		goto out;
 	}
-	bufferevent_read(c->stdin_event, pdata, psize);
+	memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
 	pdata[psize] = '\0';
+	evbuffer_drain(c->stdin_data, psize);
 
 	limit = options_get_number(&global_options, "buffer-limit");
 	if (*buffer == -1)
 		paste_add(&global_buffers, pdata, psize, limit);
 	else if (paste_replace(&global_buffers, *buffer, pdata, psize) != 0) {
 		/* No context so can't use server_client_msg_error. */
-		evbuffer_add_printf(
-		    c->stderr_event->output, "no buffer %d\n", *buffer);
-		bufferevent_enable(c->stderr_event, EV_WRITE);
+		evbuffer_add_printf(c->stderr_data, "no buffer %d\n", *buffer);
+		server_push_stderr(c);
+		free(pdata);
 	}
 
-	xfree(data);
+	free(data);
+
+out:
+	cmdq_continue(c->cmdq);
 }

cmd-lock-server.c

@@ -28,7 +28,7 @@
  * Lock commands.
  */
 
-int	cmd_lock_server_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_lock_server_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_lock_server_entry = {
 	"lock-server", "lock",
@@ -36,7 +36,6 @@ const struct cmd_entry cmd_lock_server_entry = {
 	"",
 	0,
 	NULL,
-	NULL,
 	cmd_lock_server_exec
 };
 
@@ -46,7 +45,6 @@ const struct cmd_entry cmd_lock_session_entry = {
 	CMD_TARGET_SESSION_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_lock_server_exec
 };
 
@@ -56,13 +54,11 @@ const struct cmd_entry cmd_lock_client_entry = {
 	CMD_TARGET_CLIENT_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_lock_server_exec
 };
 
-/* ARGSUSED */
-int
-cmd_lock_server_exec(struct cmd *self, unused struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_lock_server_exec(struct cmd *self, unused struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
@@ -71,15 +67,17 @@ cmd_lock_server_exec(struct cmd *self, unused struct cmd_ctx *ctx)
 	if (self->entry == &cmd_lock_server_entry)
 		server_lock();
 	else if (self->entry == &cmd_lock_session_entry) {
-		if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
-			return (-1);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
+		if (s == NULL)
+			return (CMD_RETURN_ERROR);
 		server_lock_session(s);
 	} else {
-		if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-			return (-1);
+		c = cmd_find_client(cmdq, args_get(args, 't'), 0);
+		if (c == NULL)
+			return (CMD_RETURN_ERROR);
 		server_lock_client(c);
 	}
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-move-window.c

@@ -26,41 +26,50 @@
  * Move a window.
  */
 
-int	cmd_move_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_move_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_move_window_entry = {
 	"move-window", "movew",
-	"dks:t:", 0, 0,
-	"[-dk] " CMD_SRCDST_WINDOW_USAGE,
+	"dkrs:t:", 0, 0,
+	"[-dkr] " CMD_SRCDST_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_move_window_exec
 };
 
-int
-cmd_move_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_move_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
-	struct session	*src, *dst;
+	struct session	*src, *dst, *s;
 	struct winlink	*wl;
 	char		*cause;
 	int		 idx, kflag, dflag;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 's'), &src)) == NULL)
-		return (-1);
-	if ((idx = cmd_find_index(ctx, args_get(args, 't'), &dst)) == -2)
-		return (-1);
+	if (args_has(args, 'r')) {
+		if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
+			return (CMD_RETURN_ERROR);
+
+		session_renumber_windows(s);
+		recalculate_sizes();
+
+		return (CMD_RETURN_NORMAL);
+	}
+
+	if ((wl = cmd_find_window(cmdq, args_get(args, 's'), &src)) == NULL)
+		return (CMD_RETURN_ERROR);
+	if ((idx = cmd_find_index(cmdq, args_get(args, 't'), &dst)) == -2)
+		return (CMD_RETURN_ERROR);
 
 	kflag = args_has(self->args, 'k');
 	dflag = args_has(self->args, 'd');
 	if (server_link_window(src, wl, dst, idx, kflag, !dflag, &cause) != 0) {
-		ctx->error(ctx, "can't move window: %s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "can't move window: %s", cause);
+		free(cause);
+		return (CMD_RETURN_ERROR);
 	}
 	server_unlink_window(src, wl);
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-new-session.c

@@ -18,6 +18,8 @@
 
 #include <sys/types.h>
 
+#include <errno.h>
+#include <fcntl.h>
 #include <pwd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -30,86 +32,101 @@
  * Create a new session and attach to the current terminal unless -d is given.
  */
 
-int	cmd_new_session_check(struct args *);
-int	cmd_new_session_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_new_session_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_new_session_entry = {
 	"new-session", "new",
-	"dn:s:t:x:y:", 0, 1,
-	"[-d] [-n window-name] [-s session-name] [-t target-session] "
-	"[-x width] [-y height] [command]",
-	CMD_STARTSERVER|CMD_CANTNEST|CMD_SENDENVIRON,
+	"Ac:dDF:n:Ps:t:x:y:", 0, 1,
+	"[-AdDP] [-c start-directory] [-F format] [-n window-name] "
+	"[-s session-name] " CMD_TARGET_SESSION_USAGE " [-x width] [-y height] "
+	"[command]",
+	CMD_STARTSERVER|CMD_CANTNEST,
 	NULL,
-	cmd_new_session_check,
 	cmd_new_session_exec
 };
 
-int
-cmd_new_session_check(struct args *args)
-{
-	if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n')))
-		return (-1);
-	return (0);
-}
-
-int
-cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_new_session_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
-	struct session		*s, *old_s, *groupwith;
+	struct client		*c = cmdq->client, *c0;
+	struct session		*s, *groupwith;
 	struct window		*w;
-	struct window_pane	*wp;
 	struct environ		 env;
 	struct termios		 tio, *tiop;
-	struct passwd		*pw;
-	const char		*newname, *target, *update, *cwd, *errstr;
-	char			*overrides, *cmd, *cause;
-	int			 detached, idx;
-	u_int			 sx, sy, i;
+	const char		*newname, *target, *update, *errstr, *template;
+	char			*cmd, *cause, *cp;
+	int			 detached, already_attached, idx, cwd, fd = -1;
+	u_int			 sx, sy;
+	struct format_tree	*ft;
+
+	if (args_has(args, 't') && (args->argc != 0 || args_has(args, 'n'))) {
+		cmdq_error(cmdq, "command or window name given with target");
+		return (CMD_RETURN_ERROR);
+	}
 
 	newname = args_get(args, 's');
 	if (newname != NULL) {
 		if (!session_check_name(newname)) {
-			ctx->error(ctx, "bad session name: %s", newname);
-			return (-1);
+			cmdq_error(cmdq, "bad session name: %s", newname);
+			return (CMD_RETURN_ERROR);
 		}
 		if (session_find(newname) != NULL) {
-			ctx->error(ctx, "duplicate session: %s", newname);
-			return (-1);
+			if (args_has(args, 'A')) {
+				return (cmd_attach_session(cmdq, newname,
+				    args_has(args, 'D'), 0, NULL));
+			}
+			cmdq_error(cmdq, "duplicate session: %s", newname);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
 	target = args_get(args, 't');
 	if (target != NULL) {
-		groupwith = cmd_find_session(ctx, target, 0);
+		groupwith = cmd_find_session(cmdq, target, 0);
 		if (groupwith == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 	} else
 		groupwith = NULL;
 
-	/*
-	 * There are three cases:
-	 *
-	 * 1. If cmdclient is non-NULL, new-session has been called from the
-	 *    command-line - cmdclient is to become a new attached, interactive
-	 *    client. Unless -d is given, the terminal must be opened and then
-	 *    the client sent MSG_READY.
-	 *
-	 * 2. If cmdclient is NULL, new-session has been called from an
-	 *    existing client (such as a key binding).
-	 *
-	 * 3. Both are NULL, the command was in the configuration file. Treat
-	 *    this as if -d was given even if it was not.
-	 *
-	 * In all cases, a new additional session needs to be created and
-	 * (unless -d) set as the current session for the client.
-	 */
-
 	/* Set -d if no client. */
 	detached = args_has(args, 'd');
-	if (ctx->cmdclient == NULL && ctx->curclient == NULL)
+	if (c == NULL)
 		detached = 1;
 
+	/* Is this client already attached? */
+	already_attached = 0;
+	if (c != NULL && c->session != NULL)
+		already_attached = 1;
+
+	/* Get the new session working directory. */
+	if (args_has(args, 'c')) {
+		ft = format_create();
+		if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c0);
+		cp = format_expand(ft, args_get(args, 'c'));
+		format_free(ft);
+
+		if (cp != NULL && *cp != '\0') {
+			fd = open(cp, O_RDONLY|O_DIRECTORY);
+			free(cp);
+			if (fd == -1) {
+				cmdq_error(cmdq, "bad working directory: %s",
+				    strerror(errno));
+				return (CMD_RETURN_ERROR);
+			}
+		} else if (cp != NULL)
+			free(cp);
+		cwd = fd;
+	} else if (c != NULL && c->session == NULL)
+		cwd = c->cwd;
+	else if ((c0 = cmd_current_client(cmdq)) != NULL)
+		cwd = c0->session->cwd;
+	else {
+		fd = open(".", O_RDONLY);
+		cwd = fd;
+	}
+
 	/*
 	 * Save the termios settings, part of which is used for new windows in
 	 * this session.
@@ -119,67 +136,42 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	 * before opening the terminal as that calls tcsetattr() to prepare for
 	 * tmux taking over.
 	 */
-	if (ctx->cmdclient != NULL && ctx->cmdclient->tty.fd != -1) {
-		if (tcgetattr(ctx->cmdclient->tty.fd, &tio) != 0)
+	if (!detached && !already_attached && c->tty.fd != -1) {
+		if (tcgetattr(c->tty.fd, &tio) != 0)
 			fatal("tcgetattr failed");
 		tiop = &tio;
 	} else
 		tiop = NULL;
 
 	/* Open the terminal if necessary. */
-	if (!detached && ctx->cmdclient != NULL) {
-		if (!(ctx->cmdclient->flags & CLIENT_TERMINAL)) {
-			ctx->error(ctx, "not a terminal");
-			return (-1);
+	if (!detached && !already_attached) {
+		if (server_client_open(c, NULL, &cause) != 0) {
+			cmdq_error(cmdq, "open terminal failed: %s", cause);
+			free(cause);
+			goto error;
 		}
-
-		overrides =
-		    options_get_string(&global_s_options, "terminal-overrides");
-		if (tty_open(&ctx->cmdclient->tty, overrides, &cause) != 0) {
-			ctx->error(ctx, "open terminal failed: %s", cause);
-			xfree(cause);
-			return (-1);
-		}
-	}
-
-	/* Get the new session working directory. */
-	if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
-		cwd = ctx->cmdclient->cwd;
-	else {
-		pw = getpwuid(getuid());
-		if (pw->pw_dir != NULL && *pw->pw_dir != '\0')
-			cwd = pw->pw_dir;
-		else
-			cwd = "/";
 	}
 
 	/* Find new session size. */
-	if (ctx->cmdclient != NULL) {
-		sx = ctx->cmdclient->tty.sx;
-		sy = ctx->cmdclient->tty.sy;
-	} else if (ctx->curclient != NULL) {
-		sx = ctx->curclient->tty.sx;
-		sy = ctx->curclient->tty.sy;
+	if (c != NULL) {
+		sx = c->tty.sx;
+		sy = c->tty.sy;
 	} else {
 		sx = 80;
 		sy = 24;
 	}
-	if (detached) {
-		if (args_has(args, 'x')) {
-			sx = strtonum(
-			    args_get(args, 'x'), 1, USHRT_MAX, &errstr);
-			if (errstr != NULL) {
-				ctx->error(ctx, "width %s", errstr);
-				return (-1);
-			}
+	if (detached && args_has(args, 'x')) {
+		sx = strtonum(args_get(args, 'x'), 1, USHRT_MAX, &errstr);
+		if (errstr != NULL) {
+			cmdq_error(cmdq, "width %s", errstr);
+			goto error;
 		}
-		if (args_has(args, 'y')) {
-			sy = strtonum(
-			    args_get(args, 'y'), 1, USHRT_MAX, &errstr);
-			if (errstr != NULL) {
-				ctx->error(ctx, "height %s", errstr);
-				return (-1);
-			}
+	}
+	if (detached && args_has(args, 'y')) {
+		sy = strtonum(args_get(args, 'y'), 1, USHRT_MAX, &errstr);
+		if (errstr != NULL) {
+			cmdq_error(cmdq, "height %s", errstr);
+			goto error;
 		}
 	}
 	if (sy > 0 && options_get_number(&global_s_options, "status"))
@@ -200,26 +192,23 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	/* Construct the environment. */
 	environ_init(&env);
 	update = options_get_string(&global_s_options, "update-environment");
-	if (ctx->cmdclient != NULL)
-		environ_update(update, &ctx->cmdclient->environ, &env);
+	if (c != NULL)
+		environ_update(update, &c->environ, &env);
 
 	/* Create the new session. */
 	idx = -1 - options_get_number(&global_s_options, "base-index");
 	s = session_create(newname, cmd, cwd, &env, tiop, idx, sx, sy, &cause);
 	if (s == NULL) {
-		ctx->error(ctx, "create session failed: %s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "create session failed: %s", cause);
+		free(cause);
+		goto error;
 	}
 	environ_free(&env);
 
 	/* Set the initial window name if one given. */
 	if (cmd != NULL && args_has(args, 'n')) {
 		w = s->curw->window;
-
-		xfree(w->name);
-		w->name = xstrdup(args_get(args, 'n'));
-
+		window_set_name(w, args_get(args, 'n'));
 		options_set_number(&w->options, "automatic-rename", 0);
 	}
 
@@ -238,23 +227,14 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	 * taking this session and needs to get MSG_READY and stay around.
 	 */
 	if (!detached) {
-		if (ctx->cmdclient != NULL) {
-			server_write_client(ctx->cmdclient, MSG_READY, NULL, 0);
-
-			old_s = ctx->cmdclient->session;
-			if (old_s != NULL)
-				ctx->cmdclient->last_session = old_s;
-			ctx->cmdclient->session = s;
-			session_update_activity(s);
-			server_redraw_client(ctx->cmdclient);
-		} else {
-			old_s = ctx->curclient->session;
-			if (old_s != NULL)
-				ctx->curclient->last_session = old_s;
-			ctx->curclient->session = s;
-			session_update_activity(s);
-			server_redraw_client(ctx->curclient);
-		}
+		if (!already_attached)
+			server_write_ready(c);
+		else if (c->session != NULL)
+			c->last_session = c->session;
+		c->session = s;
+		notify_attached_session_changed(c);
+		session_update_activity(s);
+		server_redraw_client(c);
 	}
 	recalculate_sizes();
 	server_update_socket();
@@ -263,17 +243,35 @@ cmd_new_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 	 * If there are still configuration file errors to display, put the new
 	 * session's current window into more mode and display them now.
 	 */
-	if (cfg_finished && !ARRAY_EMPTY(&cfg_causes)) {
-		wp = s->curw->window->active;
-		window_pane_set_mode(wp, &window_copy_mode);
-		window_copy_init_for_output(wp);
-		for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
-			cause = ARRAY_ITEM(&cfg_causes, i);
-			window_copy_add(wp, "%s", cause);
-			xfree(cause);
-		}
-		ARRAY_FREE(&cfg_causes);
+	if (cfg_finished)
+		cfg_show_causes(s);
+
+	/* Print if requested. */
+	if (args_has(args, 'P')) {
+		if ((template = args_get(args, 'F')) == NULL)
+			template = NEW_SESSION_TEMPLATE;
+
+		ft = format_create();
+		if ((c0 = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c0);
+		format_session(ft, s);
+
+		cp = format_expand(ft, template);
+		cmdq_print(cmdq, "%s", cp);
+		free(cp);
+
+		format_free(ft);
 	}
 
-	return (!detached);	/* 1 means don't tell command client to exit */
+	if (!detached)
+		cmdq->client_exit = 0;
+
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_NORMAL);
+
+error:
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_ERROR);
 }

cmd-new-window.c

@@ -18,7 +18,11 @@
 
 #include <sys/types.h>
 
+#include <errno.h>
+#include <fcntl.h>
 #include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 
 #include "tmux.h"
 
@@ -26,32 +30,34 @@
  * Create a new window.
  */
 
-int	cmd_new_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_new_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_new_window_entry = {
 	"new-window", "neww",
-	"adkn:Pt:", 0, 1,
-	"[-adk] [-n window-name] [-t target-window] [command]",
+	"ac:dF:kn:Pt:", 0, 1,
+	"[-adkP] [-c start-directory] [-F format] [-n window-name] "
+	CMD_TARGET_WINDOW_USAGE " [command]",
 	0,
 	NULL,
-	NULL,
 	cmd_new_window_exec
 };
 
-int
-cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_new_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
-	struct args	*args = self->args;
-	struct session	*s;
-	struct winlink	*wl;
-	const char     	*cmd, *cwd;
-	char		*cause;
-	int		 idx, last, detached;
+	struct args		*args = self->args;
+	struct session		*s;
+	struct winlink		*wl;
+	struct client		*c;
+	const char		*cmd, *template;
+	char			*cause, *cp;
+	int			 idx, last, detached, cwd, fd = -1;
+	struct format_tree	*ft;
 
 	if (args_has(args, 'a')) {
-		wl = cmd_find_window(ctx, args_get(args, 't'), &s);
+		wl = cmd_find_window(cmdq, args_get(args, 't'), &s);
 		if (wl == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 		idx = wl->idx + 1;
 
 		/* Find the next free index. */
@@ -60,8 +66,8 @@ cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 				break;
 		}
 		if (last == INT_MAX) {
-			ctx->error(ctx, "no free window indexes");
-			return (-1);
+			cmdq_error(cmdq, "no free window indexes");
+			return (CMD_RETURN_ERROR);
 		}
 
 		/* Move everything from last - 1 to idx up a bit. */
@@ -71,11 +77,42 @@ cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 			server_unlink_window(s, wl);
 		}
 	} else {
-		if ((idx = cmd_find_index(ctx, args_get(args, 't'), &s)) == -2)
-			return (-1);
+		if ((idx = cmd_find_index(cmdq, args_get(args, 't'), &s)) == -2)
+			return (CMD_RETURN_ERROR);
 	}
 	detached = args_has(args, 'd');
 
+	if (args->argc == 0)
+		cmd = options_get_string(&s->options, "default-command");
+	else
+		cmd = args->argv[0];
+
+	if (args_has(args, 'c')) {
+		ft = format_create();
+		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c);
+		format_session(ft, s);
+		format_winlink(ft, s, s->curw);
+		format_window_pane(ft, s->curw->window->active);
+		cp = format_expand(ft, args_get(args, 'c'));
+		format_free(ft);
+
+		if (cp != NULL && *cp != '\0') {
+			fd = open(cp, O_RDONLY|O_DIRECTORY);
+			free(cp);
+			if (fd == -1) {
+				cmdq_error(cmdq, "bad working directory: %s",
+				    strerror(errno));
+				return (CMD_RETURN_ERROR);
+			}
+		} else if (cp != NULL)
+			free(cp);
+		cwd = fd;
+	} else if (cmdq->client != NULL && cmdq->client->session == NULL)
+		cwd = cmdq->client->cwd;
+	else
+		cwd = s->cwd;
+
 	wl = NULL;
 	if (idx != -1)
 		wl = winlink_find_by_index(&s->windows, idx);
@@ -84,6 +121,7 @@ cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		 * Can't use session_detach as it will destroy session if this
 		 * makes it empty.
 		 */
+		notify_window_unlinked(s, wl->window);
 		wl->flags &= ~WINLINK_ALERTFLAGS;
 		winlink_stack_remove(&s->lastw, wl);
 		winlink_remove(&s->windows, wl);
@@ -95,19 +133,13 @@ cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		}
 	}
 
-	if (args->argc == 0)
-		cmd = options_get_string(&s->options, "default-command");
-	else
-		cmd = args->argv[0];
-	cwd = cmd_get_default_path(ctx);
-
 	if (idx == -1)
 		idx = -1 - options_get_number(&s->options, "base-index");
 	wl = session_new(s, args_get(args, 'n'), cmd, cwd, idx, &cause);
 	if (wl == NULL) {
-		ctx->error(ctx, "create window failed: %s", cause);
-		xfree(cause);
-		return (-1);
+		cmdq_error(cmdq, "create window failed: %s", cause);
+		free(cause);
+		goto error;
 	}
 	if (!detached) {
 		session_select(s, wl->idx);
@@ -115,7 +147,30 @@ cmd_new_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	} else
 		server_status_session_group(s);
 
-	if (args_has(args, 'P'))
-		ctx->print(ctx, "%s:%u", s->name, wl->idx);
-	return (0);
+	if (args_has(args, 'P')) {
+		if ((template = args_get(args, 'F')) == NULL)
+			template = NEW_WINDOW_TEMPLATE;
+
+		ft = format_create();
+		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c);
+		format_session(ft, s);
+		format_winlink(ft, s, wl);
+		format_window_pane(ft, wl->window->active);
+
+		cp = format_expand(ft, template);
+		cmdq_print(cmdq, "%s", cp);
+		free(cp);
+
+		format_free(ft);
+	}
+
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_NORMAL);
+
+error:
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_ERROR);
 }

cmd-paste-buffer.c

@@ -27,23 +27,22 @@
  * Paste paste buffer if present.
  */
 
-int	cmd_paste_buffer_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_paste_buffer_exec(struct cmd *, struct cmd_q *);
 
-void	cmd_paste_buffer_filter(
-	    struct window_pane *, const char *, size_t, const char *);
+void	cmd_paste_buffer_filter(struct window_pane *,
+	    const char *, size_t, const char *, int);
 
 const struct cmd_entry cmd_paste_buffer_entry = {
 	"paste-buffer", "pasteb",
-	"db:rs:t:", 0, 0,
-	"[-dr] [-s separator] [-b buffer-index] [-t target-pane]",
+	"db:prs:t:", 0, 0,
+	"[-dpr] [-s separator] [-b buffer-index] " CMD_TARGET_PANE_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_paste_buffer_exec
 };
 
-int
-cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_paste_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
@@ -52,18 +51,19 @@ cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 	const char		*sepstr;
 	char			*cause;
 	int			 buffer;
+	int			 pflag;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), &s, &wp) == NULL)
-		return (-1);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (!args_has(args, 'b'))
 		buffer = -1;
 	else {
 		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 		if (cause != NULL) {
-			ctx->error(ctx, "buffer %s", cause);
-			xfree(cause);
-			return (-1);
+			cmdq_error(cmdq, "buffer %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
@@ -72,8 +72,8 @@ cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 	else {
 		pb = paste_get_index(&global_buffers, buffer);
 		if (pb == NULL) {
-			ctx->error(ctx, "no buffer %d", buffer);
-			return (-1);
+			cmdq_error(cmdq, "no buffer %d", buffer);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
@@ -85,7 +85,8 @@ cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 			else
 				sepstr = "\r";
 		}
-		cmd_paste_buffer_filter(wp, pb->data, pb->size, sepstr);
+		pflag = (wp->screen->mode & MODE_BRACKETPASTE);
+		paste_send_pane(pb, wp, sepstr, args_has(args, 'p') && pflag);
 	}
 
 	/* Delete the buffer if -d. */
@@ -96,26 +97,5 @@ cmd_paste_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 			paste_free_index(&global_buffers, buffer);
 	}
 
-	return (0);
-}
-
-/* Add bytes to a buffer and filter '\n' according to separator. */
-void
-cmd_paste_buffer_filter(
-    struct window_pane *wp, const char *data, size_t size, const char *sep)
-{
-	const char	*end = data + size;
-	const char	*lf;
-	size_t		 seplen;
-
-	seplen = strlen(sep);
-	while ((lf = memchr(data, '\n', end - data)) != NULL) {
-		if (lf != data)
-			bufferevent_write(wp->event, data, lf - data);
-		bufferevent_write(wp->event, sep, seplen);
-		data = lf + 1;
-	}
-
-	if (end != data)
-		bufferevent_write(wp->event, data, end - data);
+	return (CMD_RETURN_NORMAL);
 }

cmd-pipe-pane.c

@@ -31,7 +31,7 @@
  * Open pipe to redirect pane output. If already open, close first.
  */
 
-int	cmd_pipe_pane_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_pipe_pane_exec(struct cmd *, struct cmd_q *);
 
 void	cmd_pipe_pane_error_callback(struct bufferevent *, short, void *);
 
@@ -41,12 +41,11 @@ const struct cmd_entry cmd_pipe_pane_entry = {
 	"[-o] " CMD_TARGET_PANE_USAGE " [command]",
 	0,
 	NULL,
-	NULL,
 	cmd_pipe_pane_exec
 };
 
-int
-cmd_pipe_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_pipe_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct client		*c;
@@ -54,9 +53,9 @@ cmd_pipe_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char			*command;
 	int			 old_fd, pipe_fd[2], null_fd;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp) == NULL)
-		return (-1);
-	c = cmd_find_client(ctx, NULL);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
+	c = cmd_find_client(cmdq, NULL, 1);
 
 	/* Destroy the old pipe. */
 	old_fd = wp->pipe_fd;
@@ -68,7 +67,7 @@ cmd_pipe_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	/* If no pipe command, that is enough. */
 	if (args->argc == 0 || *args->argv[0] == '\0')
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	/*
 	 * With -o, only open the new pipe if there was no previous one. This
@@ -77,19 +76,19 @@ cmd_pipe_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	 *	bind ^p pipep -o 'cat >>~/output'
 	 */
 	if (args_has(self->args, 'o') && old_fd != -1)
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	/* Open the new pipe. */
 	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, pipe_fd) != 0) {
-		ctx->error(ctx, "socketpair error: %s", strerror(errno));
-		return (-1);
+		cmdq_error(cmdq, "socketpair error: %s", strerror(errno));
+		return (CMD_RETURN_ERROR);
 	}
 
 	/* Fork the child. */
 	switch (fork()) {
 	case -1:
-		ctx->error(ctx, "fork error: %s", strerror(errno));
-		return (-1);
+		cmdq_error(cmdq, "fork error: %s", strerror(errno));
+		return (CMD_RETURN_ERROR);
 	case 0:
 		/* Child process. */
 		close(pipe_fd[0]);
@@ -126,11 +125,10 @@ cmd_pipe_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 		bufferevent_enable(wp->pipe_event, EV_WRITE);
 
 		setblocking(wp->pipe_fd, 0);
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 }
 
-/* ARGSUSED */
 void
 cmd_pipe_pane_error_callback(
     unused struct bufferevent *bufev, unused short what, void *data)

cmd-queue.c

@@ -0,0 +1,281 @@
+/* $Id$ */
+
+/*
+ * Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include "tmux.h"
+
+/* Create new command queue. */
+struct cmd_q *
+cmdq_new(struct client *c)
+{
+	struct cmd_q	*cmdq;
+
+	cmdq = xcalloc(1, sizeof *cmdq);
+	cmdq->references = 1;
+	cmdq->dead = 0;
+
+	cmdq->client = c;
+	cmdq->client_exit = -1;
+
+	TAILQ_INIT(&cmdq->queue);
+	cmdq->item = NULL;
+	cmdq->cmd = NULL;
+
+	return (cmdq);
+}
+
+/* Free command queue */
+int
+cmdq_free(struct cmd_q *cmdq)
+{
+	if (--cmdq->references != 0)
+		return (cmdq->dead);
+
+	cmdq_flush(cmdq);
+	free(cmdq);
+	return (1);
+}
+
+/* Show message from command. */
+void printflike2
+cmdq_print(struct cmd_q *cmdq, const char *fmt, ...)
+{
+	struct client	*c = cmdq->client;
+	struct window	*w;
+	va_list		 ap;
+
+	va_start(ap, fmt);
+
+	if (c == NULL)
+		/* nothing */;
+	else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
+		evbuffer_add_vprintf(c->stdout_data, fmt, ap);
+
+		evbuffer_add(c->stdout_data, "\n", 1);
+		server_push_stdout(c);
+	} else {
+		w = c->session->curw->window;
+		if (w->active->mode != &window_copy_mode) {
+			window_pane_reset_mode(w->active);
+			window_pane_set_mode(w->active, &window_copy_mode);
+			window_copy_init_for_output(w->active);
+		}
+		window_copy_vadd(w->active, fmt, ap);
+	}
+
+	va_end(ap);
+}
+
+/* Show info from command. */
+void printflike2
+cmdq_info(struct cmd_q *cmdq, const char *fmt, ...)
+{
+	struct client	*c = cmdq->client;
+	va_list		 ap;
+	char		*msg;
+
+	if (options_get_number(&global_options, "quiet"))
+		return;
+
+	va_start(ap, fmt);
+
+	if (c == NULL)
+		/* nothing */;
+	else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
+		evbuffer_add_vprintf(c->stdout_data, fmt, ap);
+
+		evbuffer_add(c->stdout_data, "\n", 1);
+		server_push_stdout(c);
+	} else {
+		xvasprintf(&msg, fmt, ap);
+		*msg = toupper((u_char) *msg);
+		status_message_set(c, "%s", msg);
+		free(msg);
+	}
+
+	va_end(ap);
+
+}
+
+/* Show error from command. */
+void printflike2
+cmdq_error(struct cmd_q *cmdq, const char *fmt, ...)
+{
+	struct client	*c = cmdq->client;
+	struct cmd	*cmd = cmdq->cmd;
+	va_list		 ap;
+	char		*msg, *cause;
+	size_t		 msglen;
+
+	va_start(ap, fmt);
+	msglen = xvasprintf(&msg, fmt, ap);
+	va_end(ap);
+
+	if (c == NULL) {
+		xasprintf(&cause, "%s:%u: %s", cmd->file, cmd->line, msg);
+		ARRAY_ADD(&cfg_causes, cause);
+	} else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
+		evbuffer_add(c->stderr_data, msg, msglen);
+		evbuffer_add(c->stderr_data, "\n", 1);
+
+		server_push_stderr(c);
+		c->retval = 1;
+	} else {
+		*msg = toupper((u_char) *msg);
+		status_message_set(c, "%s", msg);
+	}
+
+	free(msg);
+}
+
+/* Print a guard line. */
+int
+cmdq_guard(struct cmd_q *cmdq, const char *guard, int flags)
+{
+	struct client	*c = cmdq->client;
+
+	if (c == NULL)
+		return 0;
+	if (!(c->flags & CLIENT_CONTROL))
+		return 0;
+
+	evbuffer_add_printf(c->stdout_data, "%%%s %ld %u %d\n", guard,
+	    (long) cmdq->time, cmdq->number, flags);
+	server_push_stdout(c);
+	return 1;
+}
+
+/* Add command list to queue and begin processing if needed. */
+void
+cmdq_run(struct cmd_q *cmdq, struct cmd_list *cmdlist)
+{
+	cmdq_append(cmdq, cmdlist);
+
+	if (cmdq->item == NULL) {
+		cmdq->cmd = NULL;
+		cmdq_continue(cmdq);
+	}
+}
+
+/* Add command list to queue. */
+void
+cmdq_append(struct cmd_q *cmdq, struct cmd_list *cmdlist)
+{
+	struct cmd_q_item	*item;
+
+	item = xcalloc(1, sizeof *item);
+	item->cmdlist = cmdlist;
+	TAILQ_INSERT_TAIL(&cmdq->queue, item, qentry);
+	cmdlist->references++;
+}
+
+/* Continue processing command queue. Returns 1 if finishes empty. */
+int
+cmdq_continue(struct cmd_q *cmdq)
+{
+	struct cmd_q_item	*next;
+	enum cmd_retval		 retval;
+	int			 empty, guard, flags;
+	char			 s[1024];
+
+	notify_disable();
+
+	empty = TAILQ_EMPTY(&cmdq->queue);
+	if (empty)
+		goto empty;
+
+	if (cmdq->item == NULL) {
+		cmdq->item = TAILQ_FIRST(&cmdq->queue);
+		cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
+	} else
+		cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
+
+	do {
+		next = TAILQ_NEXT(cmdq->item, qentry);
+
+		while (cmdq->cmd != NULL) {
+			cmd_print(cmdq->cmd, s, sizeof s);
+			log_debug("cmdq %p: %s (client %d)", cmdq, s,
+			    cmdq->client != NULL ? cmdq->client->ibuf.fd : -1);
+
+			cmdq->time = time(NULL);
+			cmdq->number++;
+
+			flags = !!(cmdq->cmd->flags & CMD_CONTROL);
+			guard = cmdq_guard(cmdq, "begin", flags);
+
+			retval = cmdq->cmd->entry->exec(cmdq->cmd, cmdq);
+
+			if (guard) {
+				if (retval == CMD_RETURN_ERROR)
+					cmdq_guard(cmdq, "error", flags);
+				else
+					cmdq_guard(cmdq, "end", flags);
+			}
+
+			if (retval == CMD_RETURN_ERROR)
+				break;
+			if (retval == CMD_RETURN_WAIT)
+				goto out;
+			if (retval == CMD_RETURN_STOP) {
+				cmdq_flush(cmdq);
+				goto empty;
+			}
+
+			cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
+		}
+
+		TAILQ_REMOVE(&cmdq->queue, cmdq->item, qentry);
+		cmd_list_free(cmdq->item->cmdlist);
+		free(cmdq->item);
+
+		cmdq->item = next;
+		if (cmdq->item != NULL)
+			cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
+	} while (cmdq->item != NULL);
+
+empty:
+	if (cmdq->client_exit > 0)
+		cmdq->client->flags |= CLIENT_EXIT;
+	if (cmdq->emptyfn != NULL)
+		cmdq->emptyfn(cmdq); /* may free cmdq */
+	empty = 1;
+
+out:
+	notify_enable();
+	return (empty);
+}
+
+/* Flush command queue. */
+void
+cmdq_flush(struct cmd_q *cmdq)
+{
+	struct cmd_q_item	*item, *item1;
+
+	TAILQ_FOREACH_SAFE(item, &cmdq->queue, qentry, item1) {
+		TAILQ_REMOVE(&cmdq->queue, item, qentry);
+		cmd_list_free(item->cmdlist);
+		free(item);
+	}
+	cmdq->item = NULL;
+}

cmd-refresh-client.c

@@ -24,32 +24,53 @@
  * Refresh client.
  */
 
-int	cmd_refresh_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_refresh_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_refresh_client_entry = {
 	"refresh-client", "refresh",
-	"St:", 0, 0,
-	"[-S] " CMD_TARGET_CLIENT_USAGE,
+	"C:St:", 0, 0,
+	"[-S] [-C size] " CMD_TARGET_CLIENT_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_refresh_client_exec
 };
 
-int
-cmd_refresh_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_refresh_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
+	const char	*size;
+	u_int		 w, h;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
-	if (args_has(args, 'S')) {
+	if (args_has(args, 'C')) {
+		if ((size = args_get(args, 'C')) == NULL) {
+			cmdq_error(cmdq, "missing size");
+			return (CMD_RETURN_ERROR);
+		}
+		if (sscanf(size, "%u,%u", &w, &h) != 2) {
+			cmdq_error(cmdq, "bad size argument");
+			return (CMD_RETURN_ERROR);
+		}
+		if (w < PANE_MINIMUM || w > 5000 ||
+		    h < PANE_MINIMUM || h > 5000) {
+			cmdq_error(cmdq, "size too small or too big");
+			return (CMD_RETURN_ERROR);
+		}
+		if (!(c->flags & CLIENT_CONTROL)) {
+			cmdq_error(cmdq, "not a control client");
+			return (CMD_RETURN_ERROR);
+		}
+		if (tty_set_size(&c->tty, w, h))
+			recalculate_sizes();
+	} else if (args_has(args, 'S')) {
 		status_update_jobs(c);
 		server_status_client(c);
 	} else
 		server_redraw_client(c);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-rename-session.c

@@ -26,7 +26,7 @@
  * Change session name.
  */
 
-int	cmd_rename_session_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_rename_session_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_rename_session_entry = {
 	"rename-session", "rename",
@@ -34,12 +34,11 @@ const struct cmd_entry cmd_rename_session_entry = {
 	CMD_TARGET_SESSION_USAGE " new-name",
 	0,
 	NULL,
-	NULL,
 	cmd_rename_session_exec
 };
 
-int
-cmd_rename_session_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_rename_session_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*s;
@@ -47,23 +46,24 @@ cmd_rename_session_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	newname = args->argv[0];
 	if (!session_check_name(newname)) {
-		ctx->error(ctx, "bad session name: %s", newname);
-		return (-1);
+		cmdq_error(cmdq, "bad session name: %s", newname);
+		return (CMD_RETURN_ERROR);
 	}
 	if (session_find(newname) != NULL) {
-		ctx->error(ctx, "duplicate session: %s", newname);
-		return (-1);
+		cmdq_error(cmdq, "duplicate session: %s", newname);
+		return (CMD_RETURN_ERROR);
 	}
 
-	if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
-		return (-1);
+	if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	RB_REMOVE(sessions, &sessions, s);
-	xfree(s->name);
+	free(s->name);
 	s->name = xstrdup(newname);
 	RB_INSERT(sessions, &sessions, s);
 
 	server_status_session(s);
+	notify_session_renamed(s);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-rename-window.c

@@ -26,7 +26,7 @@
  * Rename a window.
  */
 
-int	cmd_rename_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_rename_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_rename_window_entry = {
 	"rename-window", "renamew",
@@ -34,25 +34,23 @@ const struct cmd_entry cmd_rename_window_entry = {
 	CMD_TARGET_WINDOW_USAGE " new-name",
 	0,
 	NULL,
-	NULL,
 	cmd_rename_window_exec
 };
 
-int
-cmd_rename_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_rename_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*s;
 	struct winlink	*wl;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), &s)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
+		return (CMD_RETURN_ERROR);
 
-	xfree(wl->window->name);
-	wl->window->name = xstrdup(args->argv[0]);
+	window_set_name(wl->window, args->argv[0]);
 	options_set_number(&wl->window->options, "automatic-rename", 0);
 
 	server_status_window(wl->window);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-resize-pane.c

@@ -26,16 +26,15 @@
  * Increase or decrease pane size.
  */
 
-void	cmd_resize_pane_key_binding(struct cmd *, int);
-int	cmd_resize_pane_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_resize_pane_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_resize_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_resize_pane_entry = {
 	"resize-pane", "resizep",
-	"DLRt:U", 0, 1,
-	"[-DLRU] " CMD_TARGET_PANE_USAGE " [adjustment]",
+	"DLRt:Ux:y:Z", 0, 1,
+	"[-DLRUZ] [-x width] [-y height] " CMD_TARGET_PANE_USAGE " [adjustment]",
 	0,
 	cmd_resize_pane_key_binding,
-	NULL,
 	cmd_resize_pane_exec
 };
 
@@ -75,34 +74,74 @@ cmd_resize_pane_key_binding(struct cmd *self, int key)
 		self->args = args_create(1, "5");
 		args_set(self->args, 'R', NULL);
 		break;
+	case 'z':
+		self->args = args_create(0);
+		args_set(self->args, 'Z', NULL);
+		break;
 	default:
 		self->args = args_create(0);
 		break;
 	}
 }
 
-int
-cmd_resize_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_resize_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
+	struct window		*w;
 	const char	       	*errstr;
+	char			*cause;
 	struct window_pane	*wp;
 	u_int			 adjust;
+	int			 x, y;
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
+	w = wl->window;
+
+	if (args_has(args, 'Z')) {
+		if (w->flags & WINDOW_ZOOMED)
+			window_unzoom(w);
+		else
+			window_zoom(wp);
+		server_redraw_window(w);
+		server_status_window(w);
+		return (CMD_RETURN_NORMAL);
+	}
+	server_unzoom_window(w);
 
 	if (args->argc == 0)
 		adjust = 1;
 	else {
 		adjust = strtonum(args->argv[0], 1, INT_MAX, &errstr);
 		if (errstr != NULL) {
-			ctx->error(ctx, "adjustment %s", errstr);
-			return (-1);
+			cmdq_error(cmdq, "adjustment %s", errstr);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
+	if (args_has(self->args, 'x')) {
+		x = args_strtonum(self->args, 'x', PANE_MINIMUM, INT_MAX,
+		    &cause);
+		if (cause != NULL) {
+			cmdq_error(cmdq, "width %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
+		}
+		layout_resize_pane_to(wp, LAYOUT_LEFTRIGHT, x);
+	}
+	if (args_has(self->args, 'y')) {
+		y = args_strtonum(self->args, 'y', PANE_MINIMUM, INT_MAX,
+		    &cause);
+		if (cause != NULL) {
+			cmdq_error(cmdq, "height %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
+		}
+		layout_resize_pane_to(wp, LAYOUT_TOPBOTTOM, y);
+	}
+
 	if (args_has(self->args, 'L'))
 		layout_resize_pane(wp, LAYOUT_LEFTRIGHT, -adjust);
 	else if (args_has(self->args, 'R'))
@@ -113,5 +152,5 @@ cmd_resize_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 		layout_resize_pane(wp, LAYOUT_TOPBOTTOM, adjust);
 	server_redraw_window(wl->window);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-respawn-pane.c

@@ -19,6 +19,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -27,7 +28,7 @@
  * Respawn a pane (restart the command). Kill existing if -k given.
  */
 
-int	cmd_respawn_pane_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_respawn_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_respawn_pane_entry = {
 	"respawn-pane", "respawnp",
@@ -35,12 +36,11 @@ const struct cmd_entry cmd_respawn_pane_entry = {
 	"[-k] " CMD_TARGET_PANE_USAGE " [command]",
 	0,
 	NULL,
-	NULL,
 	cmd_respawn_pane_exec
 };
 
-int
-cmd_respawn_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_respawn_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
@@ -52,16 +52,16 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	char			*cause;
 	u_int			 idx;
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
 	w = wl->window;
 
 	if (!args_has(self->args, 'k') && wp->fd != -1) {
 		if (window_pane_index(wp, &idx) != 0)
 			fatalx("index not found");
-		ctx->error(ctx, "pane still active: %s:%u.%u",
+		cmdq_error(cmdq, "pane still active: %s:%u.%u",
 		    s->name, wl->idx, idx);
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	}
 
 	environ_init(&env);
@@ -77,15 +77,15 @@ cmd_respawn_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 		cmd = args->argv[0];
 	else
 		cmd = NULL;
-	if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
-		ctx->error(ctx, "respawn pane failed: %s", cause);
-		xfree(cause);
+	if (window_pane_spawn(wp, cmd, NULL, -1, &env, s->tio, &cause) != 0) {
+		cmdq_error(cmdq, "respawn pane failed: %s", cause);
+		free(cause);
 		environ_free(&env);
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	}
 	wp->flags |= PANE_REDRAW;
 	server_status_window(w);
 
 	environ_free(&env);
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-respawn-window.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -26,7 +27,7 @@
  * Respawn a window (restart the command). Kill existing if -k given.
  */
 
-int	cmd_respawn_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_respawn_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_respawn_window_entry = {
 	"respawn-window", "respawnw",
@@ -34,12 +35,11 @@ const struct cmd_entry cmd_respawn_window_entry = {
 	"[-k] " CMD_TARGET_WINDOW_USAGE " [command]",
 	0,
 	NULL,
-	NULL,
 	cmd_respawn_window_exec
 };
 
-int
-cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_respawn_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
@@ -50,17 +50,17 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	const char		*cmd;
 	char		 	*cause;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), &s)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
+		return (CMD_RETURN_ERROR);
 	w = wl->window;
 
 	if (!args_has(self->args, 'k')) {
 		TAILQ_FOREACH(wp, &w->panes, entry) {
 			if (wp->fd == -1)
 				continue;
-			ctx->error(ctx,
+			cmdq_error(cmdq,
 			    "window still active: %s:%d", s->name, wl->idx);
-			return (-1);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
@@ -79,14 +79,14 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		cmd = args->argv[0];
 	else
 		cmd = NULL;
-	if (window_pane_spawn(wp, cmd, NULL, NULL, &env, s->tio, &cause) != 0) {
-		ctx->error(ctx, "respawn window failed: %s", cause);
-		xfree(cause);
+	if (window_pane_spawn(wp, cmd, NULL, -1, &env, s->tio, &cause) != 0) {
+		cmdq_error(cmdq, "respawn window failed: %s", cause);
+		free(cause);
 		environ_free(&env);
 		server_destroy_pane(wp);
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	}
-	layout_init(w);
+	layout_init(w, wp);
 	window_pane_reset_mode(wp);
 	screen_reinit(&wp->base);
 	input_init(wp);
@@ -96,5 +96,5 @@ cmd_respawn_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	server_redraw_window(w);
 
 	environ_free(&env);
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-rotate-window.c

@@ -24,8 +24,8 @@
  * Rotate the panes in a window.
  */
 
-void	cmd_rotate_window_key_binding(struct cmd *, int);
-int	cmd_rotate_window_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_rotate_window_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_rotate_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_rotate_window_entry = {
 	"rotate-window", "rotatew",
@@ -33,7 +33,6 @@ const struct cmd_entry cmd_rotate_window_entry = {
 	"[-DU] " CMD_TARGET_WINDOW_USAGE,
 	0,
 	cmd_rotate_window_key_binding,
-	NULL,
 	cmd_rotate_window_exec
 };
 
@@ -45,8 +44,8 @@ cmd_rotate_window_key_binding(struct cmd *self, int key)
 		args_set(self->args, 'D', NULL);
 }
 
-int
-cmd_rotate_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_rotate_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
@@ -55,8 +54,8 @@ cmd_rotate_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct layout_cell	*lc;
 	u_int			 sx, sy, xoff, yoff;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
 	w = wl->window;
 
 	if (args_has(self->args, 'D')) {
@@ -115,5 +114,5 @@ cmd_rotate_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		server_redraw_window(w);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-run-shell.c

@@ -20,6 +20,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -28,66 +29,114 @@
  * Runs a command without a window.
  */
 
-int	cmd_run_shell_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_run_shell_exec(struct cmd *, struct cmd_q *);
 
 void	cmd_run_shell_callback(struct job *);
 void	cmd_run_shell_free(void *);
+void	cmd_run_shell_print(struct job *, const char *);
 
 const struct cmd_entry cmd_run_shell_entry = {
 	"run-shell", "run",
-	"", 1, 1,
-	"command",
+	"bt:", 1, 1,
+	"[-b] " CMD_TARGET_PANE_USAGE " shell-command",
 	0,
 	NULL,
-	NULL,
 	cmd_run_shell_exec
 };
 
 struct cmd_run_shell_data {
 	char		*cmd;
-	struct cmd_ctx	 ctx;
+	struct cmd_q	*cmdq;
+	int		 bflag;
+	int		 wp_id;
 };
 
-int
-cmd_run_shell_exec(struct cmd *self, struct cmd_ctx *ctx)
+void
+cmd_run_shell_print(struct job *job, const char *msg)
+{
+	struct cmd_run_shell_data	*cdata = job->data;
+	struct window_pane		*wp = NULL;
+
+	if (cdata->wp_id != -1)
+		wp = window_pane_find_by_id(cdata->wp_id);
+	if (wp == NULL) {
+		cmdq_print(cdata->cmdq, "%s", msg);
+		return;
+	}
+
+	if (window_pane_set_mode(wp, &window_copy_mode) == 0)
+		window_copy_init_for_output(wp);
+	if (wp->mode == &window_copy_mode)
+		window_copy_add(wp, "%s", msg);
+}
+
+enum cmd_retval
+cmd_run_shell_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args			*args = self->args;
 	struct cmd_run_shell_data	*cdata;
-	const char			*shellcmd = args->argv[0];
+	char				*shellcmd;
+	struct client			*c;
+	struct session			*s = NULL;
+	struct winlink			*wl = NULL;
+	struct window_pane		*wp = NULL;
+	struct format_tree		*ft;
+
+	if (args_has(args, 't'))
+		wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp);
+	else {
+		c = cmd_find_client(cmdq, NULL, 1);
+		if (c != NULL && c->session != NULL) {
+			s = c->session;
+			wl = s->curw;
+			wp = wl->window->active;
+		}
+	}
+
+	ft = format_create();
+	if (s != NULL)
+		format_session(ft, s);
+	if (s != NULL && wl != NULL)
+		format_winlink(ft, s, wl);
+	if (wp != NULL)
+		format_window_pane(ft, wp);
+	shellcmd = format_expand(ft, args->argv[0]);
+	format_free(ft);
 
 	cdata = xmalloc(sizeof *cdata);
-	cdata->cmd = xstrdup(args->argv[0]);
-	memcpy(&cdata->ctx, ctx, sizeof cdata->ctx);
+	cdata->cmd = shellcmd;
+	cdata->bflag = args_has(args, 'b');
+	cdata->wp_id = wp != NULL ? (int) wp->id : -1;
 
-	if (ctx->cmdclient != NULL)
-		ctx->cmdclient->references++;
-	if (ctx->curclient != NULL)
-		ctx->curclient->references++;
+	cdata->cmdq = cmdq;
+	cmdq->references++;
 
-	job_run(shellcmd, cmd_run_shell_callback, cmd_run_shell_free, cdata);
+	job_run(shellcmd, s, cmd_run_shell_callback, cmd_run_shell_free, cdata);
 
-	return (1);	/* don't let client exit */
+	if (cdata->bflag)
+		return (CMD_RETURN_NORMAL);
+	return (CMD_RETURN_WAIT);
 }
 
 void
 cmd_run_shell_callback(struct job *job)
 {
 	struct cmd_run_shell_data	*cdata = job->data;
-	struct cmd_ctx			*ctx = &cdata->ctx;
+	struct cmd_q			*cmdq = cdata->cmdq;
 	char				*cmd, *msg, *line;
 	size_t				 size;
 	int				 retcode;
 	u_int				 lines;
 
-	if (ctx->cmdclient != NULL && ctx->cmdclient->flags & CLIENT_DEAD)
-		return;
-	if (ctx->curclient != NULL && ctx->curclient->flags & CLIENT_DEAD)
+	if (cmdq->dead)
 		return;
+	cmd = cdata->cmd;
 
 	lines = 0;
 	do {
 		if ((line = evbuffer_readline(job->event->input)) != NULL) {
-			ctx->print(ctx, "%s", line);
+			cmd_run_shell_print(job, line);
+			free(line);
 			lines++;
 		}
 	} while (line != NULL);
@@ -98,14 +147,12 @@ cmd_run_shell_callback(struct job *job)
 		memcpy(line, EVBUFFER_DATA(job->event->input), size);
 		line[size] = '\0';
 
-		ctx->print(ctx, "%s", line);
+		cmd_run_shell_print(job, line);
 		lines++;
 
-		xfree(line);
+		free(line);
 	}
 
-	cmd = cdata->cmd;
-
 	msg = NULL;
 	if (WIFEXITED(job->status)) {
 		if ((retcode = WEXITSTATUS(job->status)) != 0)
@@ -115,11 +162,11 @@ cmd_run_shell_callback(struct job *job)
 		xasprintf(&msg, "'%s' terminated by signal %d", cmd, retcode);
 	}
 	if (msg != NULL) {
-		if (lines != 0)
-			ctx->print(ctx, "%s", msg);
+		if (lines == 0)
+			cmdq_info(cmdq, "%s", msg);
 		else
-			ctx->info(ctx, "%s", msg);
-		xfree(msg);
+			cmd_run_shell_print(job, msg);
+		free(msg);
 	}
 }
 
@@ -127,15 +174,11 @@ void
 cmd_run_shell_free(void *data)
 {
 	struct cmd_run_shell_data	*cdata = data;
-	struct cmd_ctx			*ctx = &cdata->ctx;
+	struct cmd_q			*cmdq = cdata->cmdq;
 
-	if (ctx->cmdclient != NULL) {
-		ctx->cmdclient->references--;
-		ctx->cmdclient->flags |= CLIENT_EXIT;
-	}
-	if (ctx->curclient != NULL)
-		ctx->curclient->references--;
+	if (!cmdq_free(cmdq) && !cdata->bflag)
+		cmdq_continue(cmdq);
 
-	xfree(cdata->cmd);
-	xfree(cdata);
+	free(cdata->cmd);
+	free(cdata);
 }

cmd-save-buffer.c

@@ -20,7 +20,10 @@
 #include <sys/stat.h>
 
 #include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "tmux.h"
 
@@ -28,90 +31,136 @@
  * Saves a paste buffer to a file.
  */
 
-int	cmd_save_buffer_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_save_buffer_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_save_buffer_entry = {
 	"save-buffer", "saveb",
 	"ab:", 1, 1,
-	"[-a] " CMD_BUFFER_USAGE,
+	"[-a] " CMD_BUFFER_USAGE " path",
 	0,
 	NULL,
-	NULL,
 	cmd_save_buffer_exec
 };
 
-int
-cmd_save_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+const struct cmd_entry cmd_show_buffer_entry = {
+	"show-buffer", "showb",
+	"b:", 0, 0,
+	CMD_BUFFER_USAGE,
+	0,
+	NULL,
+	cmd_save_buffer_exec
+};
+
+enum cmd_retval
+cmd_save_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
-	struct client		*c = ctx->cmdclient;
+	struct client		*c = cmdq->client;
 	struct session          *s;
 	struct paste_buffer	*pb;
-	const char		*path, *newpath, *wd;
-	char			*cause;
-	int			 buffer;
-	mode_t			 mask;
+	const char		*path;
+	char			*cause, *start, *end, *msg;
+	size_t			 size, used, msglen;
+	int			 cwd, fd, buffer;
 	FILE			*f;
 
 	if (!args_has(args, 'b')) {
 		if ((pb = paste_get_top(&global_buffers)) == NULL) {
-			ctx->error(ctx, "no buffers");
-			return (-1);
+			cmdq_error(cmdq, "no buffers");
+			return (CMD_RETURN_ERROR);
 		}
 	} else {
 		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 		if (cause != NULL) {
-			ctx->error(ctx, "buffer %s", cause);
-			xfree(cause);
-			return (-1);
+			cmdq_error(cmdq, "buffer %s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
 
 		pb = paste_get_index(&global_buffers, buffer);
 		if (pb == NULL) {
-			ctx->error(ctx, "no buffer %d", buffer);
-			return (-1);
+			cmdq_error(cmdq, "no buffer %d", buffer);
+			return (CMD_RETURN_ERROR);
 		}
 	}
 
-	path = args->argv[0];
+	if (self->entry == &cmd_show_buffer_entry)
+		path = "-";
+	else
+		path = args->argv[0];
 	if (strcmp(path, "-") == 0) {
 		if (c == NULL) {
-			ctx->error(ctx, "%s: can't write to stdout", path);
-			return (-1);
+			cmdq_error(cmdq, "can't write to stdout");
+			return (CMD_RETURN_ERROR);
 		}
-		bufferevent_write(c->stdout_event, pb->data, pb->size);
-	} else {
-		if (c != NULL)
-			wd = c->cwd;
-		else if ((s = cmd_current_session(ctx, 0)) != NULL) {
-			wd = options_get_string(&s->options, "default-path");
-			if (*wd == '\0')
-				wd = s->cwd;
-		} else
-			wd = NULL;
-		if (wd != NULL && *wd != '\0') {
-			newpath = get_full_path(wd, path);
-			if (newpath != NULL)
-				path = newpath;
-		}
-
-		mask = umask(S_IRWXG | S_IRWXO);
-		if (args_has(self->args, 'a'))
-			f = fopen(path, "ab");
-		else
-			f = fopen(path, "wb");
-		umask(mask);
-		if (f == NULL) {
-			ctx->error(ctx, "%s: %s", path, strerror(errno));
-			return (-1);
-		}
-		if (fwrite(pb->data, 1, pb->size, f) != pb->size) {
-			ctx->error(ctx, "%s: fwrite error", path);
-			fclose(f);
-			return (-1);
-		}
-		fclose(f);
+		if (c->session == NULL || (c->flags & CLIENT_CONTROL))
+			goto do_stdout;
+		goto do_print;
 	}
 
-	return (0);
+	if (c != NULL && c->session == NULL)
+		cwd = c->cwd;
+	else if ((s = cmd_current_session(cmdq, 0)) != NULL)
+		cwd = s->cwd;
+	else
+		cwd = AT_FDCWD;
+
+	f = NULL;
+	if (args_has(self->args, 'a')) {
+		fd = openat(cwd, path, O_CREAT|O_RDWR|O_APPEND, 0600);
+		if (fd != -1)
+			f = fdopen(fd, "ab");
+	} else {
+		fd = openat(cwd, path, O_CREAT|O_RDWR, 0600);
+		if (fd != -1)
+			f = fdopen(fd, "wb");
+	}
+	if (f == NULL) {
+		if (fd != -1)
+			close(fd);
+		cmdq_error(cmdq, "%s: %s", path, strerror(errno));
+		return (CMD_RETURN_ERROR);
+	}
+	if (fwrite(pb->data, 1, pb->size, f) != pb->size) {
+		cmdq_error(cmdq, "%s: fwrite error", path);
+		fclose(f);
+		return (CMD_RETURN_ERROR);
+	}
+	fclose(f);
+
+	return (CMD_RETURN_NORMAL);
+
+do_stdout:
+	evbuffer_add(c->stdout_data, pb->data, pb->size);
+	server_push_stdout(c);
+	return (CMD_RETURN_NORMAL);
+
+do_print:
+	if (pb->size > (INT_MAX / 4) - 1) {
+		cmdq_error(cmdq, "buffer too big");
+		return (CMD_RETURN_ERROR);
+	}
+	msg = NULL;
+	msglen = 0;
+
+	used = 0;
+	while (used != pb->size) {
+		start = pb->data + used;
+		end = memchr(start, '\n', pb->size - used);
+		if (end != NULL)
+			size = end - start;
+		else
+			size = pb->size - used;
+
+		msglen = size * 4 + 1;
+		msg = xrealloc(msg, 1, msglen);
+
+		strvisx(msg, start, size, VIS_OCTAL|VIS_TAB);
+		cmdq_print(cmdq, "%s", msg);
+
+		used += size + (end != NULL);
+	}
+
+	free(msg);
+	return (CMD_RETURN_NORMAL);
 }

cmd-select-layout.c

@@ -24,8 +24,8 @@
  * Switch window to selected layout.
  */
 
-void	cmd_select_layout_key_binding(struct cmd *, int);
-int	cmd_select_layout_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_select_layout_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_select_layout_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_select_layout_entry = {
 	"select-layout", "selectl",
@@ -33,7 +33,6 @@ const struct cmd_entry cmd_select_layout_entry = {
 	"[-np] " CMD_TARGET_WINDOW_USAGE " [layout-name]",
 	0,
 	cmd_select_layout_key_binding,
-	NULL,
 	cmd_select_layout_exec
 };
 
@@ -43,7 +42,6 @@ const struct cmd_entry cmd_next_layout_entry = {
 	CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_select_layout_exec
 };
 
@@ -53,7 +51,6 @@ const struct cmd_entry cmd_previous_layout_entry = {
 	CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_select_layout_exec
 };
 
@@ -82,16 +79,17 @@ cmd_select_layout_key_binding(struct cmd *self, int key)
 	}
 }
 
-int
-cmd_select_layout_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_select_layout_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct winlink	*wl;
 	const char	*layoutname;
 	int		 next, previous, layout;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), NULL)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), NULL)) == NULL)
+		return (CMD_RETURN_ERROR);
+	server_unzoom_window(wl->window);
 
 	next = self->entry == &cmd_next_layout_entry;
 	if (args_has(self->args, 'n'))
@@ -105,8 +103,9 @@ cmd_select_layout_exec(struct cmd *self, struct cmd_ctx *ctx)
 			layout = layout_set_next(wl->window);
 		else
 			layout = layout_set_previous(wl->window);
-		ctx->info(ctx, "arranging in: %s", layout_set_name(layout));
-		return (0);
+		server_redraw_window(wl->window);
+		cmdq_info(cmdq, "arranging in: %s", layout_set_name(layout));
+		return (CMD_RETURN_NORMAL);
 	}
 
 	if (args->argc == 0)
@@ -115,19 +114,19 @@ cmd_select_layout_exec(struct cmd *self, struct cmd_ctx *ctx)
 		layout = layout_set_lookup(args->argv[0]);
 	if (layout != -1) {
 		layout = layout_set_select(wl->window, layout);
-		ctx->info(ctx, "arranging in: %s", layout_set_name(layout));
-		return (0);
+		server_redraw_window(wl->window);
+		cmdq_info(cmdq, "arranging in: %s", layout_set_name(layout));
+		return (CMD_RETURN_NORMAL);
 	}
 
 	if (args->argc != 0) {
 		layoutname = args->argv[0];
 		if (layout_parse(wl->window, layoutname) == -1) {
-			ctx->error(ctx, "can't set layout: %s", layoutname);
-			return (-1);
+			cmdq_error(cmdq, "can't set layout: %s", layoutname);
+			return (CMD_RETURN_ERROR);
 		}
-		ctx->info(ctx, "arranging in: %s", layoutname);
-		return (0);
+		server_redraw_window(wl->window);
+		cmdq_info(cmdq, "arranging in: %s", layoutname);
 	}
-
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-select-pane.c

@@ -24,8 +24,8 @@
  * Select pane.
  */
 
-void	cmd_select_pane_key_binding(struct cmd *, int);
-int	cmd_select_pane_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_select_pane_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_select_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_select_pane_entry = {
 	"select-pane", "selectp",
@@ -33,7 +33,6 @@ const struct cmd_entry cmd_select_pane_entry = {
 	"[-lDLRU] " CMD_TARGET_PANE_USAGE,
 	0,
 	cmd_select_pane_key_binding,
-	NULL,
 	cmd_select_pane_exec
 };
 
@@ -43,7 +42,6 @@ const struct cmd_entry cmd_last_pane_entry = {
 	CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_select_pane_exec
 };
 
@@ -63,36 +61,38 @@ cmd_select_pane_key_binding(struct cmd *self, int key)
 		args_set(self->args, 't', ":.+");
 }
 
-int
-cmd_select_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_select_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
 	struct window_pane	*wp;
 
 	if (self->entry == &cmd_last_pane_entry || args_has(args, 'l')) {
-		wl = cmd_find_window(ctx, args_get(args, 't'), NULL);
+		wl = cmd_find_window(cmdq, args_get(args, 't'), NULL);
 		if (wl == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 
 		if (wl->window->last == NULL) {
-			ctx->error(ctx, "no last pane");
-			return (-1);
+			cmdq_error(cmdq, "no last pane");
+			return (CMD_RETURN_ERROR);
 		}
 
+		server_unzoom_window(wl->window);
 		window_set_active_pane(wl->window, wl->window->last);
 		server_status_window(wl->window);
 		server_redraw_window_borders(wl->window);
 
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), NULL, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), NULL, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
 
+	server_unzoom_window(wp->window);
 	if (!window_pane_visible(wp)) {
-		ctx->error(ctx, "pane not visible");
-		return (-1);
+		cmdq_error(cmdq, "pane not visible");
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (args_has(self->args, 'L'))
@@ -104,13 +104,13 @@ cmd_select_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	else if (args_has(self->args, 'D'))
 		wp = window_pane_find_down(wp);
 	if (wp == NULL) {
-		ctx->error(ctx, "pane not found");
-		return (-1);
+		cmdq_error(cmdq, "pane not found");
+		return (CMD_RETURN_ERROR);
 	}
 
 	window_set_active_pane(wl->window, wp);
 	server_status_window(wl->window);
 	server_redraw_window_borders(wl->window);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-select-window.c

@@ -26,16 +26,15 @@
  * Select window by index.
  */
 
-void	cmd_select_window_key_binding(struct cmd *, int);
-int	cmd_select_window_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_select_window_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_select_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_select_window_entry = {
 	"select-window", "selectw",
-	"lnpt:", 0, 0,
-	"[-lnp] " CMD_TARGET_WINDOW_USAGE,
+	"lnpTt:", 0, 0,
+	"[-lnpT] " CMD_TARGET_WINDOW_USAGE,
 	0,
 	cmd_select_window_key_binding,
-	NULL,
 	cmd_select_window_exec
 };
 
@@ -45,7 +44,6 @@ const struct cmd_entry cmd_next_window_entry = {
 	"[-a] " CMD_TARGET_SESSION_USAGE,
 	0,
 	cmd_select_window_key_binding,
-	NULL,
 	cmd_select_window_exec
 };
 
@@ -55,7 +53,6 @@ const struct cmd_entry cmd_previous_window_entry = {
 	"[-a] " CMD_TARGET_SESSION_USAGE,
 	0,
 	cmd_select_window_key_binding,
-	NULL,
 	cmd_select_window_exec
 };
 
@@ -65,7 +62,6 @@ const struct cmd_entry cmd_last_window_entry = {
 	CMD_TARGET_SESSION_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_select_window_exec
 };
 
@@ -83,8 +79,8 @@ cmd_select_window_key_binding(struct cmd *self, int key)
 		args_set(self->args, 'a', NULL);
 }
 
-int
-cmd_select_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_select_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct winlink	*wl;
@@ -102,38 +98,48 @@ cmd_select_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		last = 1;
 
 	if (next || previous || last) {
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
+		s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 		if (s == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 
 		activity = args_has(self->args, 'a');
 		if (next) {
 			if (session_next(s, activity) != 0) {
-				ctx->error(ctx, "no next window");
-				return (-1);
+				cmdq_error(cmdq, "no next window");
+				return (CMD_RETURN_ERROR);
 			}
 		} else if (previous) {
 			if (session_previous(s, activity) != 0) {
-				ctx->error(ctx, "no previous window");
-				return (-1);
+				cmdq_error(cmdq, "no previous window");
+				return (CMD_RETURN_ERROR);
 			}
 		} else {
 			if (session_last(s) != 0) {
-				ctx->error(ctx, "no last window");
-				return (-1);
+				cmdq_error(cmdq, "no last window");
+				return (CMD_RETURN_ERROR);
 			}
 		}
 
 		server_redraw_session(s);
 	} else {
-		wl = cmd_find_window(ctx, args_get(args, 't'), &s);
+		wl = cmd_find_window(cmdq, args_get(args, 't'), &s);
 		if (wl == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 
-		if (session_select(s, wl->idx) == 0)
+		/*
+		 * If -T and select-window is invoked on same window as
+		 * current, switch to previous window.
+		 */
+		if (args_has(self->args, 'T') && wl == s->curw) {
+			if (session_last(s) != 0) {
+				cmdq_error(cmdq, "no last window");
+				return (-1);
+			}
+			server_redraw_session(s);
+		} else if (session_select(s, wl->idx) == 0)
 			server_redraw_session(s);
 	}
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-send-keys.c

@@ -27,30 +27,47 @@
  * Send keys to client.
  */
 
-int	cmd_send_keys_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_send_keys_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_send_keys_entry = {
 	"send-keys", "send",
-	"Rt:", 0, -1,
-	"[-R] [-t target-pane] key ...",
+	"lRt:", 0, -1,
+	"[-lR] " CMD_TARGET_PANE_USAGE " key ...",
 	0,
 	NULL,
-	NULL,
 	cmd_send_keys_exec
 };
 
-int
-cmd_send_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
+const struct cmd_entry cmd_send_prefix_entry = {
+	"send-prefix", NULL,
+	"2t:", 0, 0,
+	"[-2] " CMD_TARGET_PANE_USAGE,
+	0,
+	NULL,
+	cmd_send_keys_exec
+};
+
+enum cmd_retval
+cmd_send_keys_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct window_pane	*wp;
 	struct session		*s;
 	struct input_ctx	*ictx;
-	const char		*str;
+	const u_char		*str;
 	int			 i, key;
 
-	if (cmd_find_pane(ctx, args_get(args, 't'), &s, &wp) == NULL)
-		return (-1);
+	if (cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp) == NULL)
+		return (CMD_RETURN_ERROR);
+
+	if (self->entry == &cmd_send_prefix_entry) {
+		if (args_has(args, '2'))
+			key = options_get_number(&s->options, "prefix2");
+		else
+			key = options_get_number(&s->options, "prefix");
+		window_pane_key(wp, s, key);
+		return (CMD_RETURN_NORMAL);
+	}
 
 	if (args_has(args, 'R')) {
 		ictx = &wp->ictx;
@@ -71,7 +88,8 @@ cmd_send_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 	for (i = 0; i < args->argc; i++) {
 		str = args->argv[i];
 
-		if ((key = key_string_lookup_string(str)) != KEYC_NONE) {
+		if (!args_has(args, 'l') &&
+		    (key = key_string_lookup_string(str)) != KEYC_NONE) {
 			    window_pane_key(wp, s, key);
 		} else {
 			for (; *str != '\0'; str++)
@@ -79,5 +97,5 @@ cmd_send_keys_exec(struct cmd *self, struct cmd_ctx *ctx)
 		}
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-server-info.c

@@ -1,183 +0,0 @@
-/* $Id$ */
-
-/*
- * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
- * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/types.h>
-#include <sys/utsname.h>
-
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "tmux.h"
-
-/*
- * Show various information about server.
- */
-
-int	cmd_server_info_exec(struct cmd *, struct cmd_ctx *);
-
-const struct cmd_entry cmd_server_info_entry = {
-	"server-info", "info",
-	"", 0, 0,
-	"",
-	0,
-	NULL,
-	NULL,
-	cmd_server_info_exec
-};
-
-/* ARGSUSED */
-int
-cmd_server_info_exec(unused struct cmd *self, struct cmd_ctx *ctx)
-{
-	struct tty_term				*term;
-	struct client				*c;
-	struct session				*s;
-	struct winlink				*wl;
-	struct window				*w;
-	struct window_pane			*wp;
-	struct tty_code				*code;
-	const struct tty_term_code_entry	*ent;
-	struct utsname				 un;
-	struct job				*job;
-	struct grid				*gd;
-	struct grid_line			*gl;
-	u_int		 			 i, j, k;
-	char					 out[80];
-	char					*tim;
-	time_t		 			 t;
-	u_int					 lines, ulines;
-	size_t					 size, usize;
-
-	tim = ctime(&start_time);
-	*strchr(tim, '\n') = '\0';
-	ctx->print(ctx,
-	    "tmux " VERSION ", pid %ld, started %s", (long) getpid(), tim);
-	ctx->print(
-	    ctx, "socket path %s, debug level %d", socket_path, debug_level);
-	if (uname(&un) >= 0) {
-		ctx->print(ctx, "system is %s %s %s %s",
-		    un.sysname, un.release, un.version, un.machine);
-	}
-	if (cfg_file != NULL)
-		ctx->print(ctx, "configuration file is %s", cfg_file);
-	else
-		ctx->print(ctx, "configuration file not specified");
-	ctx->print(ctx, "protocol version is %d", PROTOCOL_VERSION);
-	ctx->print(ctx, "%s", "");
-
-	ctx->print(ctx, "Clients:");
-	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
-		c = ARRAY_ITEM(&clients, i);
-		if (c == NULL || c->session == NULL)
-			continue;
-
-		ctx->print(ctx,"%2d: %s (%d, %d): %s [%ux%u %s bs=%hho] "
-		    "[flags=0x%x/0x%x, references=%u]", i, c->tty.path,
-		    c->ibuf.fd, c->tty.fd, c->session->name,
-		    c->tty.sx, c->tty.sy, c->tty.termname,
-		    c->tty.tio.c_cc[VERASE], c->flags,
-		    c->tty.flags, c->references);
-	}
-	ctx->print(ctx, "%s", "");
-
-	ctx->print(ctx, "Sessions: [%zu/%zu]",
-	    sizeof (struct grid_cell), sizeof (struct grid_utf8));
-	RB_FOREACH(s, sessions, &sessions) {
-		t = s->creation_time.tv_sec;
-		tim = ctime(&t);
-		*strchr(tim, '\n') = '\0';
-
-		ctx->print(ctx, "%2u: %s: %u windows (created %s) [%ux%u] "
-		    "[flags=0x%x]", s->idx, s->name,
-		    winlink_count(&s->windows), tim, s->sx, s->sy, s->flags);
-		RB_FOREACH(wl, winlinks, &s->windows) {
-			w = wl->window;
-			ctx->print(ctx, "%4u: %s [%ux%u] [flags=0x%x, "
-			    "references=%u, last layout=%d]", wl->idx, w->name,
-			    w->sx, w->sy, w->flags, w->references,
-			    w->lastlayout);
-			j = 0;
-			TAILQ_FOREACH(wp, &w->panes, entry) {
-				lines = ulines = size = usize = 0;
-				gd = wp->base.grid;
-				for (k = 0; k < gd->hsize + gd->sy; k++) {
-					gl = &gd->linedata[k];
-					if (gl->celldata != NULL) {
-						lines++;
-						size += gl->cellsize *
-						    sizeof *gl->celldata;
-					}
-					if (gl->utf8data != NULL) {
-						ulines++;
-						usize += gl->utf8size *
-						    sizeof *gl->utf8data;
-					}
-				}
-				ctx->print(ctx, "%6u: %s %lu %d %u/%u, %zu "
-				    "bytes; UTF-8 %u/%u, %zu bytes", j,
-				    wp->tty, (u_long) wp->pid, wp->fd, lines,
-				    gd->hsize + gd->sy, size, ulines,
-				    gd->hsize + gd->sy, usize);
-				j++;
-			}
-		}
-	}
-	ctx->print(ctx, "%s", "");
-
-	ctx->print(ctx, "Terminals:");
-	LIST_FOREACH(term, &tty_terms, entry) {
-		ctx->print(ctx, "%s [references=%u, flags=0x%x]:",
-		    term->name, term->references, term->flags);
-		for (i = 0; i < NTTYCODE; i++) {
-			ent = &tty_term_codes[i];
-			code = &term->codes[ent->code];
-			switch (code->type) {
-			case TTYCODE_NONE:
-				ctx->print(ctx, "%2u: %s: [missing]",
-				    ent->code, ent->name);
-				break;
-			case TTYCODE_STRING:
-				strnvis(out, code->value.string, sizeof out,
-				    VIS_OCTAL|VIS_TAB|VIS_NL);
-				ctx->print(ctx, "%2u: %s: (string) %s",
-				    ent->code, ent->name, out);
-				break;
-			case TTYCODE_NUMBER:
-				ctx->print(ctx, "%2u: %s: (number) %d",
-				    ent->code, ent->name, code->value.number);
-				break;
-			case TTYCODE_FLAG:
-				ctx->print(ctx, "%2u: %s: (flag) %s",
-				    ent->code, ent->name,
-				    code->value.flag ? "true" : "false");
-				break;
-			}
-		}
-	}
-	ctx->print(ctx, "%s", "");
-
-	ctx->print(ctx, "Jobs:");
-	LIST_FOREACH(job, &all_jobs, lentry) {
-		ctx->print(ctx, "%s [fd=%d, pid=%d, status=%d]",
-		    job->cmd, job->fd, job->pid, job->status);
-	}
-
-	return (0);
-}

cmd-set-buffer.c

@@ -18,6 +18,7 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
 #include <string.h>
 
 #include "tmux.h"
@@ -26,7 +27,7 @@
  * Add or set a paste buffer.
  */
 
-int	cmd_set_buffer_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_set_buffer_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_set_buffer_entry = {
 	"set-buffer", "setb",
@@ -34,12 +35,11 @@ const struct cmd_entry cmd_set_buffer_entry = {
 	CMD_BUFFER_USAGE " data",
 	0,
 	NULL,
-	NULL,
 	cmd_set_buffer_exec
 };
 
-int
-cmd_set_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_set_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	u_int		 limit;
@@ -54,22 +54,22 @@ cmd_set_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	if (!args_has(args, 'b')) {
 		paste_add(&global_buffers, pdata, psize, limit);
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 
 	buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
 	if (cause != NULL) {
-		ctx->error(ctx, "buffer %s", cause);
-		xfree(cause);
-		xfree(pdata);
-		return (-1);
+		cmdq_error(cmdq, "buffer %s", cause);
+		free(cause);
+		free(pdata);
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (paste_replace(&global_buffers, buffer, pdata, psize) != 0) {
-		ctx->error(ctx, "no buffer %d", buffer);
-		xfree(pdata);
-		return (-1);
+		cmdq_error(cmdq, "no buffer %d", buffer);
+		free(pdata);
+		return (CMD_RETURN_ERROR);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-set-environment.c

@@ -27,7 +27,7 @@
  * Set an environment variable.
  */
 
-int	cmd_set_environment_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_set_environment_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_set_environment_entry = {
 	"set-environment", "setenv",
@@ -35,12 +35,11 @@ const struct cmd_entry cmd_set_environment_entry = {
 	"[-gru] " CMD_TARGET_SESSION_USAGE " name [value]",
 	0,
 	NULL,
-	NULL,
 	cmd_set_environment_exec
 };
 
-int
-cmd_set_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_set_environment_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct session	*s;
@@ -49,15 +48,15 @@ cmd_set_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
 
 	name = args->argv[0];
 	if (*name == '\0') {
-		ctx->error(ctx, "empty variable name");
-		return (-1);
+		cmdq_error(cmdq, "empty variable name");
+		return (CMD_RETURN_ERROR);
 	}
 	if (strchr(name, '=') != NULL) {
-		ctx->error(ctx, "variable name contains =");
-		return (-1);
+		cmdq_error(cmdq, "variable name contains =");
+		return (CMD_RETURN_ERROR);
 	}
 
-	if (args->argc < 1)
+	if (args->argc < 2)
 		value = NULL;
 	else
 		value = args->argv[1];
@@ -65,30 +64,30 @@ cmd_set_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (args_has(self->args, 'g'))
 		env = &global_environ;
 	else {
-		if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
-			return (-1);
+		if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
+			return (CMD_RETURN_ERROR);
 		env = &s->environ;
 	}
 
 	if (args_has(self->args, 'u')) {
 		if (value != NULL) {
-			ctx->error(ctx, "can't specify a value with -u");
-			return (-1);
+			cmdq_error(cmdq, "can't specify a value with -u");
+			return (CMD_RETURN_ERROR);
 		}
 		environ_unset(env, name);
 	} else if (args_has(self->args, 'r')) {
 		if (value != NULL) {
-			ctx->error(ctx, "can't specify a value with -r");
-			return (-1);
+			cmdq_error(cmdq, "can't specify a value with -r");
+			return (CMD_RETURN_ERROR);
 		}
 		environ_set(env, name, NULL);
 	} else {
 		if (value == NULL) {
-			ctx->error(ctx, "no value specified");
-			return (-1);
+			cmdq_error(cmdq, "no value specified");
+			return (CMD_RETURN_ERROR);
 		}
 		environ_set(env, name, value);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-set-option.c

@@ -27,95 +27,63 @@
  * Set an option.
  */
 
-int	cmd_set_option_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_set_option_exec(struct cmd *, struct cmd_q *);
 
-int	cmd_set_option_find(const char *, const struct options_table_entry **,
-	    const struct options_table_entry **);
+enum cmd_retval	cmd_set_option_user(struct cmd *, struct cmd_q *,
+	    const char *, const char *);
 
-int	cmd_set_option_unset(struct cmd *, struct cmd_ctx *,
+int	cmd_set_option_unset(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-int	cmd_set_option_set(struct cmd *, struct cmd_ctx *,
+int	cmd_set_option_set(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
 
-struct options_entry *cmd_set_option_string(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_string(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_number(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_number(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_key(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_key(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_colour(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_colour(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_attributes(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_attributes(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_flag(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_flag(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
-struct options_entry *cmd_set_option_choice(struct cmd *, struct cmd_ctx *,
+struct options_entry *cmd_set_option_choice(struct cmd *, struct cmd_q *,
+	    const struct options_table_entry *, struct options *,
+	    const char *);
+struct options_entry *cmd_set_option_style(struct cmd *, struct cmd_q *,
 	    const struct options_table_entry *, struct options *,
 	    const char *);
 
 const struct cmd_entry cmd_set_option_entry = {
 	"set-option", "set",
-	"agst:uw", 1, 2,
-	"[-agsuw] [-t target-session|target-window] option [value]",
+	"agoqst:uw", 1, 2,
+	"[-agosquw] [-t target-session|target-window] option [value]",
 	0,
 	NULL,
-	NULL,
 	cmd_set_option_exec
 };
 
 const struct cmd_entry cmd_set_window_option_entry = {
 	"set-window-option", "setw",
-	"agt:u", 1, 2,
-	"[-agu] " CMD_TARGET_WINDOW_USAGE " option [value]",
+	"agoqt:u", 1, 2,
+	"[-agoqu] " CMD_TARGET_WINDOW_USAGE " option [value]",
 	0,
 	NULL,
-	NULL,
 	cmd_set_option_exec
 };
 
-/* Look for an option in all three tables. */
-int
-cmd_set_option_find(
-    const char *optstr, const struct options_table_entry **table,
-    const struct options_table_entry **oe)
-{
-	static const struct options_table_entry	*tables[] = {
-		server_options_table,
-		window_options_table,
-		session_options_table
-	};
-	const struct options_table_entry	*oe_loop;
-	u_int					 i;
-
-	for (i = 0; i < nitems(tables); i++) {
-		for (oe_loop = tables[i]; oe_loop->name != NULL; oe_loop++) {
-			if (strncmp(oe_loop->name, optstr, strlen(optstr)) != 0)
-				continue;
-
-			/* If already found, ambiguous. */
-			if (*oe != NULL)
-				return (-1);
-			*oe = oe_loop;
-			*table = tables[i];
-
-			/* Bail now if an exact match. */
-			if (strcmp((*oe)->name, optstr) == 0)
-				break;
-		}
-	}
-	return (0);
-}
-
-int
-cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_set_option_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args				*args = self->args;
 	const struct options_table_entry	*table, *oe;
@@ -123,29 +91,34 @@ cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct winlink				*wl;
 	struct client				*c;
 	struct options				*oo;
+	struct window				*w;
 	const char				*optstr, *valstr;
 	u_int					 i;
 
 	/* Get the option name and value. */
 	optstr = args->argv[0];
 	if (*optstr == '\0') {
-		ctx->error(ctx, "invalid option");
-		return (-1);
+		cmdq_error(cmdq, "invalid option");
+		return (CMD_RETURN_ERROR);
 	}
 	if (args->argc < 2)
 		valstr = NULL;
 	else
 		valstr = args->argv[1];
 
+	/* Is this a user option? */
+	if (*optstr == '@')
+		return (cmd_set_option_user(self, cmdq, optstr, valstr));
+
 	/* Find the option entry, try each table. */
 	table = oe = NULL;
-	if (cmd_set_option_find(optstr, &table, &oe) != 0) {
-		ctx->error(ctx, "ambiguous option: %s", optstr);
-		return (-1);
+	if (options_table_find(optstr, &table, &oe) != 0) {
+		cmdq_error(cmdq, "ambiguous option: %s", optstr);
+		return (CMD_RETURN_ERROR);
 	}
 	if (oe == NULL) {
-		ctx->error(ctx, "unknown option: %s", optstr);
-		return (-1);
+		cmdq_error(cmdq, "unknown option: %s", optstr);
+		return (CMD_RETURN_ERROR);
 	}
 
 	/* Work out the tree from the table. */
@@ -155,32 +128,59 @@ cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
 		if (args_has(self->args, 'g'))
 			oo = &global_w_options;
 		else {
-			wl = cmd_find_window(ctx, args_get(args, 't'), NULL);
-			if (wl == NULL)
-				return (-1);
+			wl = cmd_find_window(cmdq, args_get(args, 't'), NULL);
+			if (wl == NULL) {
+				cmdq_error(cmdq,
+				    "couldn't set '%s'%s", optstr,
+				    (!args_has(args, 't') && !args_has(args,
+				    'g')) ? " need target window or -g" : "");
+				return (CMD_RETURN_ERROR);
+			}
 			oo = &wl->window->options;
 		}
 	} else if (table == session_options_table) {
 		if (args_has(self->args, 'g'))
 			oo = &global_s_options;
 		else {
-			s = cmd_find_session(ctx, args_get(args, 't'), 0);
-			if (s == NULL)
-				return (-1);
+			s = cmd_find_session(cmdq, args_get(args, 't'), 0);
+			if (s == NULL) {
+				cmdq_error(cmdq,
+				    "couldn't set '%s'%s", optstr,
+				    (!args_has(args, 't') && !args_has(args,
+				    'g')) ? " need target session or -g" : "");
+				return (CMD_RETURN_ERROR);
+			}
 			oo = &s->options;
 		}
 	} else {
-		ctx->error(ctx, "unknown table");
-		return (-1);
+		cmdq_error(cmdq, "unknown table");
+		return (CMD_RETURN_ERROR);
 	}
 
 	/* Unset or set the option. */
 	if (args_has(args, 'u')) {
-		if (cmd_set_option_unset(self, ctx, oe, oo, valstr) != 0)
-			return (-1);
+		if (cmd_set_option_unset(self, cmdq, oe, oo, valstr) != 0)
+			return (CMD_RETURN_ERROR);
 	} else {
-		if (cmd_set_option_set(self, ctx, oe, oo, valstr) != 0)
-			return (-1);
+		if (args_has(args, 'o') && options_find1(oo, optstr) != NULL) {
+			if (!args_has(args, 'q'))
+				cmdq_print(cmdq, "already set: %s", optstr);
+			return (CMD_RETURN_NORMAL);
+		}
+		if (cmd_set_option_set(self, cmdq, oe, oo, valstr) != 0)
+			return (CMD_RETURN_ERROR);
+	}
+
+	/* Start or stop timers when automatic-rename changed. */
+	if (strcmp(oe->name, "automatic-rename") == 0) {
+		for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
+			if ((w = ARRAY_ITEM(&windows, i)) == NULL)
+				continue;
+			if (options_get_number(&w->options, "automatic-rename"))
+				queue_window_name(w);
+			else if (event_initialized(&w->name_timer))
+				evtimer_del(&w->name_timer);
+		}
 	}
 
 	/* Update sizes and redraw. May not need it but meh. */
@@ -191,81 +191,155 @@ cmd_set_option_exec(struct cmd *self, struct cmd_ctx *ctx)
 			server_redraw_client(c);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
+/* Set user option. */
+enum cmd_retval
+cmd_set_option_user(struct cmd *self, struct cmd_q *cmdq, const char* optstr,
+    const char *valstr)
+{
+	struct args	*args = self->args;
+	struct session	*s;
+	struct winlink	*wl;
+	struct options	*oo;
+
+	if (args_has(args, 's'))
+		oo = &global_options;
+	else if (args_has(self->args, 'w') ||
+	    self->entry == &cmd_set_window_option_entry) {
+		if (args_has(self->args, 'g'))
+			oo = &global_w_options;
+		else {
+			wl = cmd_find_window(cmdq, args_get(args, 't'), NULL);
+			if (wl == NULL)
+				return (CMD_RETURN_ERROR);
+			oo = &wl->window->options;
+		}
+	} else {
+		if (args_has(self->args, 'g'))
+			oo = &global_s_options;
+		else {
+			s = cmd_find_session(cmdq, args_get(args, 't'), 0);
+			if (s == NULL)
+				return (CMD_RETURN_ERROR);
+			oo = &s->options;
+		}
+	}
+
+	if (args_has(args, 'u')) {
+		if (options_find1(oo, optstr) == NULL) {
+			cmdq_error(cmdq, "unknown option: %s", optstr);
+			return (CMD_RETURN_ERROR);
+		}
+		if (valstr != NULL) {
+			cmdq_error(cmdq, "value passed to unset option: %s",
+			    optstr);
+			return (CMD_RETURN_ERROR);
+		}
+		options_remove(oo, optstr);
+	} else {
+		if (valstr == NULL) {
+			cmdq_error(cmdq, "empty value");
+			return (CMD_RETURN_ERROR);
+		}
+		if (args_has(args, 'o') && options_find1(oo, optstr) != NULL) {
+			if (!args_has(args, 'q'))
+				cmdq_print(cmdq, "already set: %s", optstr);
+			return (CMD_RETURN_NORMAL);
+		}
+		options_set_string(oo, optstr, "%s", valstr);
+		if (!args_has(args, 'q')) {
+			cmdq_info(cmdq, "set option: %s -> %s", optstr,
+			    valstr);
+		}
+	}
+	return (CMD_RETURN_NORMAL);
+}
+
+
 /* Unset an option. */
 int
-cmd_set_option_unset(struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_unset(struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	struct args	*args = self->args;
 
 	if (args_has(args, 'g')) {
-		ctx->error(ctx, "can't unset global option: %s", oe->name);
+		cmdq_error(cmdq, "can't unset global option: %s", oe->name);
 		return (-1);
 	}
 	if (value != NULL) {
-		ctx->error(ctx, "value passed to unset option: %s", oe->name);
+		cmdq_error(cmdq, "value passed to unset option: %s", oe->name);
 		return (-1);
 	}
 
 	options_remove(oo, oe->name);
-	ctx->info(ctx, "unset option: %s", oe->name);
+	if (!args_has(args, 'q'))
+		cmdq_info(cmdq, "unset option: %s", oe->name);
 	return (0);
 }
 
 /* Set an option. */
 int
-cmd_set_option_set(struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_set(struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
+	struct args		*args = self->args;
 	struct options_entry	*o;
 	const char		*s;
 
 	if (oe->type != OPTIONS_TABLE_FLAG && value == NULL) {
-		ctx->error(ctx, "empty value");
+		cmdq_error(cmdq, "empty value");
 		return (-1);
 	}
 
 	o = NULL;
 	switch (oe->type) {
 	case OPTIONS_TABLE_STRING:
-		o = cmd_set_option_string(self, ctx, oe, oo, value);
+		o = cmd_set_option_string(self, cmdq, oe, oo, value);
 		break;
 	case OPTIONS_TABLE_NUMBER:
-		o = cmd_set_option_number(self, ctx, oe, oo, value);
+		o = cmd_set_option_number(self, cmdq, oe, oo, value);
 		break;
 	case OPTIONS_TABLE_KEY:
-		o = cmd_set_option_key(self, ctx, oe, oo, value);
+		o = cmd_set_option_key(self, cmdq, oe, oo, value);
 		break;
 	case OPTIONS_TABLE_COLOUR:
-		o = cmd_set_option_colour(self, ctx, oe, oo, value);
+		o = cmd_set_option_colour(self, cmdq, oe, oo, value);
+		if (o != NULL)
+			style_update_new(oo, o->name, oe->style);
 		break;
 	case OPTIONS_TABLE_ATTRIBUTES:
-		o = cmd_set_option_attributes(self, ctx, oe, oo, value);
+		o = cmd_set_option_attributes(self, cmdq, oe, oo, value);
+		if (o != NULL)
+			style_update_new(oo, o->name, oe->style);
 		break;
 	case OPTIONS_TABLE_FLAG:
-		o = cmd_set_option_flag(self, ctx, oe, oo, value);
+		o = cmd_set_option_flag(self, cmdq, oe, oo, value);
 		break;
 	case OPTIONS_TABLE_CHOICE:
-		o = cmd_set_option_choice(self, ctx, oe, oo, value);
+		o = cmd_set_option_choice(self, cmdq, oe, oo, value);
+		break;
+	case OPTIONS_TABLE_STYLE:
+		o = cmd_set_option_style(self, cmdq, oe, oo, value);
 		break;
 	}
 	if (o == NULL)
 		return (-1);
 
-	s = options_table_print_entry(oe, o);
-	ctx->info(ctx, "set option: %s -> %s", oe->name, s);
+	s = options_table_print_entry(oe, o, 0);
+	if (!args_has(args, 'q'))
+		cmdq_info(cmdq, "set option: %s -> %s", oe->name, s);
 	return (0);
 }
 
 /* Set a string option. */
 struct options_entry *
-cmd_set_option_string(struct cmd *self, unused struct cmd_ctx *ctx,
+cmd_set_option_string(struct cmd *self, unused struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
-	struct args	*args = self->args;
+	struct args		*args = self->args;
 	struct options_entry	*o;
 	char			*oldval, *newval;
 
@@ -277,13 +351,13 @@ cmd_set_option_string(struct cmd *self, unused struct cmd_ctx *ctx,
 
 	o = options_set_string(oo, oe->name, "%s", newval);
 
-	xfree(newval);
+	free(newval);
 	return (o);
 }
 
 /* Set a number option. */
 struct options_entry *
-cmd_set_option_number(unused struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_number(unused struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	long long	 ll;
@@ -291,7 +365,7 @@ cmd_set_option_number(unused struct cmd *self, struct cmd_ctx *ctx,
 
 	ll = strtonum(value, oe->minimum, oe->maximum, &errstr);
 	if (errstr != NULL) {
-		ctx->error(ctx, "value is %s: %s", errstr, value);
+		cmdq_error(cmdq, "value is %s: %s", errstr, value);
 		return (NULL);
 	}
 
@@ -300,13 +374,13 @@ cmd_set_option_number(unused struct cmd *self, struct cmd_ctx *ctx,
 
 /* Set a key option. */
 struct options_entry *
-cmd_set_option_key(unused struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_key(unused struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	int	key;
 
 	if ((key = key_string_lookup_string(value)) == KEYC_NONE) {
-		ctx->error(ctx, "bad key: %s", value);
+		cmdq_error(cmdq, "bad key: %s", value);
 		return (NULL);
 	}
 
@@ -315,13 +389,13 @@ cmd_set_option_key(unused struct cmd *self, struct cmd_ctx *ctx,
 
 /* Set a colour option. */
 struct options_entry *
-cmd_set_option_colour(unused struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_colour(unused struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	int	colour;
 
 	if ((colour = colour_fromstring(value)) == -1) {
-		ctx->error(ctx, "bad colour: %s", value);
+		cmdq_error(cmdq, "bad colour: %s", value);
 		return (NULL);
 	}
 
@@ -330,13 +404,13 @@ cmd_set_option_colour(unused struct cmd *self, struct cmd_ctx *ctx,
 
 /* Set an attributes option. */
 struct options_entry *
-cmd_set_option_attributes(unused struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_attributes(unused struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	int	attr;
 
 	if ((attr = attributes_fromstring(value)) == -1) {
-		ctx->error(ctx, "bad attributes: %s", value);
+		cmdq_error(cmdq, "bad attributes: %s", value);
 		return (NULL);
 	}
 
@@ -345,7 +419,7 @@ cmd_set_option_attributes(unused struct cmd *self, struct cmd_ctx *ctx,
 
 /* Set a flag option. */
 struct options_entry *
-cmd_set_option_flag(unused struct cmd *self, struct cmd_ctx *ctx,
+cmd_set_option_flag(unused struct cmd *self, struct cmd_q *cmdq,
     const struct options_table_entry *oe, struct options *oo, const char *value)
 {
 	int	flag;
@@ -362,7 +436,7 @@ cmd_set_option_flag(unused struct cmd *self, struct cmd_ctx *ctx,
 		    strcasecmp(value, "no") == 0)
 			flag = 0;
 		else {
-			ctx->error(ctx, "bad value: %s", value);
+			cmdq_error(cmdq, "bad value: %s", value);
 			return (NULL);
 		}
 	}
@@ -372,8 +446,9 @@ cmd_set_option_flag(unused struct cmd *self, struct cmd_ctx *ctx,
 
 /* Set a choice option. */
 struct options_entry *
-cmd_set_option_choice(unused struct cmd *self, struct cmd_ctx *ctx,
-    const struct options_table_entry *oe, struct options *oo, const char *value)
+cmd_set_option_choice(unused struct cmd *self, struct cmd_q *cmdq,
+    const struct options_table_entry *oe, struct options *oo,
+    const char *value)
 {
 	const char	**choicep;
 	int		  n, choice = -1;
@@ -385,15 +460,35 @@ cmd_set_option_choice(unused struct cmd *self, struct cmd_ctx *ctx,
 			continue;
 
 		if (choice != -1) {
-			ctx->error(ctx, "ambiguous value: %s", value);
+			cmdq_error(cmdq, "ambiguous value: %s", value);
 			return (NULL);
 		}
 		choice = n - 1;
 	}
 	if (choice == -1) {
-		ctx->error(ctx, "unknown value: %s", value);
+		cmdq_error(cmdq, "unknown value: %s", value);
 		return (NULL);
 	}
 
 	return (options_set_number(oo, oe->name, choice));
 }
+
+/* Set a style option. */
+struct options_entry *
+cmd_set_option_style(struct cmd *self, struct cmd_q *cmdq,
+    const struct options_table_entry *oe, struct options *oo,
+    const char *value)
+{
+	struct args		*args = self->args;
+	struct options_entry	*o;
+	int			 append;
+
+	append = args_has(args, 'a');
+	if ((o = options_set_style(oo, oe->name, value, append)) == NULL) {
+		cmdq_error(cmdq, "bad style: %s", value);
+		return (NULL);
+	}
+
+	style_update_old(oo, oe->name, &o->style);
+	return (o);
+}

cmd-show-buffer.c

@@ -1,109 +0,0 @@
-/* $Id$ */
-
-/*
- * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
- * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <sys/types.h>
-
-#include "tmux.h"
-
-/*
- * Show a paste buffer.
- */
-
-int	cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
-
-const struct cmd_entry cmd_show_buffer_entry = {
-	"show-buffer", "showb",
-	"b:", 0, 0,
-	CMD_BUFFER_USAGE,
-	0,
-	NULL,
-	NULL,
-	cmd_show_buffer_exec
-};
-
-int
-cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
-{
-	struct args		*args = self->args;
-	struct session		*s;
-	struct paste_buffer	*pb;
-	int			 buffer;
-	char			*in, *buf, *ptr, *cause;
-	size_t			 size, len;
-	u_int			 width;
-
-	if ((s = cmd_find_session(ctx, NULL, 0)) == NULL)
-		return (-1);
-
-	if (!args_has(args, 'b')) {
-		if ((pb = paste_get_top(&global_buffers)) == NULL) {
-			ctx->error(ctx, "no buffers");
-			return (-1);
-		}
-	} else {
-		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
-		if (cause != NULL) {
-			ctx->error(ctx, "buffer %s", cause);
-			xfree(cause);
-			return (-1);
-		}
-
-		pb = paste_get_index(&global_buffers, buffer);
-		if (pb == NULL) {
-			ctx->error(ctx, "no buffer %d", buffer);
-			return (-1);
-		}
-	}
-
-	size = pb->size;
-	if (size > SIZE_MAX / 4 - 1)
-		size = SIZE_MAX / 4 - 1;
-	in = xmalloc(size * 4 + 1);
-	strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
-
-	width = s->sx;
-	if (ctx->cmdclient != NULL)
-		width = ctx->cmdclient->tty.sx;
-
-	buf = xmalloc(width + 1);
-	len = 0;
-
-	ptr = in;
-	do {
-		buf[len++] = *ptr++;
-
-		if (len == width || buf[len - 1] == '\n') {
-			if (buf[len - 1] == '\n')
-				len--;
-			buf[len] = '\0';
-
-			ctx->print(ctx, "%s", buf);
-			len = 0;
-		}
-	} while (*ptr != '\0');
-
-	if (len != 0) {
-		buf[len] = '\0';
-		ctx->print(ctx, "%s", buf);
-	}
-	xfree(buf);
-
-	xfree(in);
-
-	return (0);
-}

cmd-show-environment.c

@@ -27,20 +27,19 @@
  * Show environment.
  */
 
-int	cmd_show_environment_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_show_environment_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_show_environment_entry = {
 	"show-environment", "showenv",
-	"gt:", 0, 0,
-	"[-g] " CMD_TARGET_SESSION_USAGE,
+	"gt:", 0, 1,
+	"[-g] " CMD_TARGET_SESSION_USAGE " [name]",
 	0,
 	NULL,
-	NULL,
 	cmd_show_environment_exec
 };
 
-int
-cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_show_environment_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct session		*s;
@@ -50,17 +49,30 @@ cmd_show_environment_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (args_has(self->args, 'g'))
 		env = &global_environ;
 	else {
-		if ((s = cmd_find_session(ctx, args_get(args, 't'), 0)) == NULL)
-			return (-1);
+		if ((s = cmd_find_session(cmdq, args_get(args, 't'), 0)) == NULL)
+			return (CMD_RETURN_ERROR);
 		env = &s->environ;
 	}
 
+	if (args->argc != 0) {
+		envent = environ_find(env, args->argv[0]);
+		if (envent == NULL) {
+			cmdq_error(cmdq, "unknown variable: %s", args->argv[0]);
+			return (CMD_RETURN_ERROR);
+		}
+		if (envent->value != NULL)
+			cmdq_print(cmdq, "%s=%s", envent->name, envent->value);
+		else
+			cmdq_print(cmdq, "-%s", envent->name);
+		return (CMD_RETURN_NORMAL);
+	}
+
 	RB_FOREACH(envent, environ, env) {
 		if (envent->value != NULL)
-			ctx->print(ctx, "%s=%s", envent->name, envent->value);
+			cmdq_print(cmdq, "%s=%s", envent->name, envent->value);
 		else
-			ctx->print(ctx, "-%s", envent->name);
+			cmdq_print(cmdq, "-%s", envent->name);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-show-messages.c

@@ -20,6 +20,7 @@
 
 #include <string.h>
 #include <time.h>
+#include <unistd.h>
 
 #include "tmux.h"
 
@@ -27,29 +28,134 @@
  * Show client message log.
  */
 
-int	cmd_show_messages_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_show_messages_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_show_messages_entry = {
 	"show-messages", "showmsgs",
-	"t:", 0, 0,
-	CMD_TARGET_CLIENT_USAGE,
+	"IJTt:", 0, 0,
+	"[-IJT] " CMD_TARGET_CLIENT_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_show_messages_exec
 };
 
-int
-cmd_show_messages_exec(struct cmd *self, struct cmd_ctx *ctx)
+const struct cmd_entry cmd_server_info_entry = {
+	"server-info", "info",
+	"", 0, 0,
+	"",
+	0,
+	NULL,
+	cmd_show_messages_exec
+};
+
+void	cmd_show_messages_server(struct cmd_q *);
+void	cmd_show_messages_terminals(struct cmd_q *);
+void	cmd_show_messages_jobs(struct cmd_q *);
+
+void
+cmd_show_messages_server(struct cmd_q *cmdq)
+{
+	char	*tim;
+
+	tim = ctime(&start_time);
+	*strchr(tim, '\n') = '\0';
+
+	cmdq_print(cmdq, "started %s", tim);
+	cmdq_print(cmdq, "socket path %s", socket_path);
+	cmdq_print(cmdq, "debug level %d", debug_level);
+	cmdq_print(cmdq, "protocol version %d", PROTOCOL_VERSION);
+}
+
+void
+cmd_show_messages_terminals(struct cmd_q *cmdq)
+{
+	struct tty_term				*term;
+	const struct tty_term_code_entry	*ent;
+	struct tty_code				*code;
+	u_int					 i, n;
+	char					 out[80];
+
+	n = 0;
+	LIST_FOREACH(term, &tty_terms, entry) {
+		cmdq_print(cmdq,
+		    "Terminal %u: %s [references=%u, flags=0x%x]:",
+		    n, term->name, term->references, term->flags);
+		n++;
+		for (i = 0; i < NTTYCODE; i++) {
+			ent = &tty_term_codes[i];
+			code = &term->codes[ent->code];
+			switch (code->type) {
+			case TTYCODE_NONE:
+				cmdq_print(cmdq, "%4u: %s: [missing]",
+				    ent->code, ent->name);
+				break;
+			case TTYCODE_STRING:
+				strnvis(out, code->value.string, sizeof out,
+				    VIS_OCTAL|VIS_TAB|VIS_NL);
+				cmdq_print(cmdq, "%4u: %s: (string) %s",
+				    ent->code, ent->name, out);
+				break;
+			case TTYCODE_NUMBER:
+				cmdq_print(cmdq, "%4u: %s: (number) %d",
+				    ent->code, ent->name, code->value.number);
+				break;
+			case TTYCODE_FLAG:
+				cmdq_print(cmdq, "%4u: %s: (flag) %s",
+				    ent->code, ent->name,
+				    code->value.flag ? "true" : "false");
+				break;
+			}
+		}
+	}
+}
+
+void
+cmd_show_messages_jobs(struct cmd_q *cmdq)
+{
+	struct job	*job;
+	u_int		 n;
+
+	n = 0;
+	LIST_FOREACH(job, &all_jobs, lentry) {
+		cmdq_print(cmdq,
+		    "Job %u: %s [fd=%d, pid=%d, status=%d]",
+		    n, job->cmd, job->fd, job->pid, job->status);
+		n++;
+	}
+}
+
+enum cmd_retval
+cmd_show_messages_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct client		*c;
 	struct message_entry	*msg;
 	char			*tim;
 	u_int			 i;
+	int			 done;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	done = 0;
+	if (args_has(args, 'I') || self->entry == &cmd_server_info_entry) {
+		cmd_show_messages_server(cmdq);
+		done = 1;
+	}
+	if (args_has(args, 'T') || self->entry == &cmd_server_info_entry) {
+		if (done)
+			cmdq_print(cmdq, "%s", "");
+		cmd_show_messages_terminals(cmdq);
+		done = 1;
+	}
+	if (args_has(args, 'J') || self->entry == &cmd_server_info_entry) {
+		if (done)
+			cmdq_print(cmdq, "%s", "");
+		cmd_show_messages_jobs(cmdq);
+		done = 1;
+	}
+	if (done)
+		return (CMD_RETURN_NORMAL);
+
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	for (i = 0; i < ARRAY_LENGTH(&c->message_log); i++) {
 		msg = &ARRAY_ITEM(&c->message_log, i);
@@ -57,8 +163,8 @@ cmd_show_messages_exec(struct cmd *self, struct cmd_ctx *ctx)
 		tim = ctime(&msg->msg_time);
 		*strchr(tim, '\n') = '\0';
 
-		ctx->print(ctx, "%s %s", tim, msg->msg);
+		cmdq_print(cmdq, "%s %s", tim, msg->msg);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-show-options.c

@@ -27,38 +27,40 @@
  * Show options.
  */
 
-int	cmd_show_options_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_show_options_exec(struct cmd *, struct cmd_q *);
+
+enum cmd_retval	cmd_show_options_one(struct cmd *, struct cmd_q *,
+		    struct options *, int);
+enum cmd_retval cmd_show_options_all(struct cmd *, struct cmd_q *,
+		    const struct options_table_entry *, struct options *);
 
 const struct cmd_entry cmd_show_options_entry = {
 	"show-options", "show",
-	"gst:w", 0, 0,
-	"[-gsw] [-t target-session|target-window]",
+	"gqst:vw", 0, 1,
+	"[-gqsvw] [-t target-session|target-window] [option]",
 	0,
 	NULL,
-	NULL,
 	cmd_show_options_exec
 };
 
 const struct cmd_entry cmd_show_window_options_entry = {
 	"show-window-options", "showw",
-	"gt:", 0, 0,
-	"[-g] " CMD_TARGET_WINDOW_USAGE,
+	"gvt:", 0, 1,
+	"[-gv] " CMD_TARGET_WINDOW_USAGE " [option]",
 	0,
 	NULL,
-	NULL,
 	cmd_show_options_exec
 };
 
-int
-cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_show_options_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args				*args = self->args;
-	const struct options_table_entry	*table, *oe;
 	struct session				*s;
 	struct winlink				*wl;
+	const struct options_table_entry	*table;
 	struct options				*oo;
-	struct options_entry			*o;
-	const char				*optval;
+	int					 quiet;
 
 	if (args_has(self->args, 's')) {
 		oo = &global_options;
@@ -69,9 +71,9 @@ cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 		if (args_has(self->args, 'g'))
 			oo = &global_w_options;
 		else {
-			wl = cmd_find_window(ctx, args_get(args, 't'), NULL);
+			wl = cmd_find_window(cmdq, args_get(args, 't'), NULL);
 			if (wl == NULL)
-				return (-1);
+				return (CMD_RETURN_ERROR);
 			oo = &wl->window->options;
 		}
 	} else {
@@ -79,19 +81,91 @@ cmd_show_options_exec(struct cmd *self, struct cmd_ctx *ctx)
 		if (args_has(self->args, 'g'))
 			oo = &global_s_options;
 		else {
-			s = cmd_find_session(ctx, args_get(args, 't'), 0);
+			s = cmd_find_session(cmdq, args_get(args, 't'), 0);
 			if (s == NULL)
-				return (-1);
+				return (CMD_RETURN_ERROR);
 			oo = &s->options;
 		}
 	}
 
+	quiet = args_has(self->args, 'q');
+	if (args->argc == 0)
+		return (cmd_show_options_all(self, cmdq, table, oo));
+	else
+		return (cmd_show_options_one(self, cmdq, oo, quiet));
+}
+
+enum cmd_retval
+cmd_show_options_one(struct cmd *self, struct cmd_q *cmdq,
+    struct options *oo, int quiet)
+{
+	struct args				*args = self->args;
+	const struct options_table_entry	*table, *oe;
+	struct options_entry			*o;
+	const char				*optval;
+
+	if (*args->argv[0] == '@') {
+		if ((o = options_find1(oo, args->argv[0])) == NULL) {
+			if (quiet)
+				return (CMD_RETURN_NORMAL);
+			cmdq_error(cmdq, "unknown option: %s", args->argv[0]);
+			return (CMD_RETURN_ERROR);
+		}
+		if (args_has(self->args, 'v'))
+			cmdq_print(cmdq, "%s", o->str);
+		else
+			cmdq_print(cmdq, "%s \"%s\"", o->name, o->str);
+		return (CMD_RETURN_NORMAL);
+	}
+
+	table = oe = NULL;
+	if (options_table_find(args->argv[0], &table, &oe) != 0) {
+		cmdq_error(cmdq, "ambiguous option: %s", args->argv[0]);
+		return (CMD_RETURN_ERROR);
+	}
+	if (oe == NULL) {
+		if (quiet)
+		    return (CMD_RETURN_NORMAL);
+		cmdq_error(cmdq, "unknown option: %s", args->argv[0]);
+		return (CMD_RETURN_ERROR);
+	}
+	if ((o = options_find1(oo, oe->name)) == NULL)
+		return (CMD_RETURN_NORMAL);
+	optval = options_table_print_entry(oe, o, args_has(self->args, 'v'));
+	if (args_has(self->args, 'v'))
+		cmdq_print(cmdq, "%s", optval);
+	else
+		cmdq_print(cmdq, "%s %s", oe->name, optval);
+	return (CMD_RETURN_NORMAL);
+}
+
+enum cmd_retval
+cmd_show_options_all(struct cmd *self, struct cmd_q *cmdq,
+    const struct options_table_entry *table, struct options *oo)
+{
+	const struct options_table_entry	*oe;
+	struct options_entry			*o;
+	const char				*optval;
+
+	RB_FOREACH(o, options_tree, &oo->tree) {
+		if (*o->name == '@') {
+			if (args_has(self->args, 'v'))
+				cmdq_print(cmdq, "%s", o->str);
+			else
+				cmdq_print(cmdq, "%s \"%s\"", o->name, o->str);
+		}
+	}
+
 	for (oe = table; oe->name != NULL; oe++) {
 		if ((o = options_find1(oo, oe->name)) == NULL)
 			continue;
-		optval = options_table_print_entry(oe, o);
-		ctx->print(ctx, "%s %s", oe->name, optval);
+		optval = options_table_print_entry(oe, o,
+		    args_has(self->args, 'v'));
+		if (args_has(self->args, 'v'))
+			cmdq_print(cmdq, "%s", optval);
+		else
+			cmdq_print(cmdq, "%s %s", oe->name, optval);
 	}
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-source-file.c

@@ -18,13 +18,18 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
+
 #include "tmux.h"
 
 /*
  * Sources a configuration file.
  */
 
-int	cmd_source_file_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_source_file_exec(struct cmd *, struct cmd_q *);
+
+void		cmd_source_file_show(struct cmd_q *);
+void		cmd_source_file_done(struct cmd_q *);
 
 const struct cmd_entry cmd_source_file_entry = {
 	"source-file", "source",
@@ -32,43 +37,75 @@ const struct cmd_entry cmd_source_file_entry = {
 	"path",
 	0,
 	NULL,
-	NULL,
 	cmd_source_file_exec
 };
 
-int
-cmd_source_file_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_source_file_exec(struct cmd *self, struct cmd_q *cmdq)
 {
-	struct args		*args = self->args;
-	struct causelist	 causes;
-	char			*cause;
-	struct window_pane	*wp;
-	int			 retval;
-	u_int			 i;
+	struct args	*args = self->args;
+	struct cmd_q	*cmdq1;
+	char		*cause;
 
-	ARRAY_INIT(&causes);
+	cmdq1 = cmdq_new(NULL);
+	cmdq1->client = cmdq->client;
+	cmdq1->emptyfn = cmd_source_file_done;
+	cmdq1->data = cmdq;
 
-	retval = load_cfg(args->argv[0], ctx, &causes);
-	if (ARRAY_EMPTY(&causes))
-		return (retval);
-
-	if (retval == 1 && !RB_EMPTY(&sessions) && ctx->cmdclient != NULL) {
-		wp = RB_MIN(sessions, &sessions)->curw->window->active;
-		window_pane_set_mode(wp, &window_copy_mode);
-		window_copy_init_for_output(wp);
-		for (i = 0; i < ARRAY_LENGTH(&causes); i++) {
-			cause = ARRAY_ITEM(&causes, i);
-			window_copy_add(wp, "%s", cause);
-			xfree(cause);
-		}
-	} else {
-		for (i = 0; i < ARRAY_LENGTH(&causes); i++) {
-			cause = ARRAY_ITEM(&causes, i);
-			ctx->print(ctx, "%s", cause);
-			xfree(cause);
+	switch (load_cfg(args->argv[0], cmdq1, &cause)) {
+	case -1:
+		if (cfg_references == 0) {
+			cmdq_free(cmdq1);
+			cmdq_error(cmdq, "%s", cause);
+			free(cause);
+			return (CMD_RETURN_ERROR);
 		}
+		ARRAY_ADD(&cfg_causes, cause);
+		/* FALLTHROUGH */
+	case 0:
+		if (cfg_references == 0)
+			cmd_source_file_show(cmdq);
+		cmdq_free(cmdq1);
+		return (CMD_RETURN_NORMAL);
 	}
-	ARRAY_FREE(&causes);
 
-	return (retval);
+	cmdq->references++;
+	cfg_references++;
+
+	cmdq_continue(cmdq1);
+	return (CMD_RETURN_WAIT);
+}
+
+void
+cmd_source_file_show(struct cmd_q *cmdq)
+{
+	u_int	 i;
+	char	*cause;
+
+	for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
+		cause = ARRAY_ITEM(&cfg_causes, i);
+		cmdq_print(cmdq, "%s", cause);
+		free(cause);
+	}
+	ARRAY_FREE(&cfg_causes);
+}
+
+void
+cmd_source_file_done(struct cmd_q *cmdq1)
+{
+	struct cmd_q	*cmdq = cmdq1->data;
+
+	if (cmdq1->client_exit >= 0)
+		cmdq->client_exit = cmdq1->client_exit;
+
+	cmdq_free(cmdq1);
+
+	cfg_references--;
+
+	if (cmdq_free(cmdq))
+		return;
+
+	if (cfg_references == 0)
+		cmd_source_file_show(cmdq);
+	cmdq_continue(cmdq);
 }

cmd-split-window.c

@@ -18,7 +18,10 @@
 
 #include <sys/types.h>
 
+#include <errno.h>
+#include <fcntl.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "tmux.h"
@@ -27,16 +30,16 @@
  * Split a window (add a new pane).
  */
 
-void	cmd_split_window_key_binding(struct cmd *, int);
-int	cmd_split_window_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_split_window_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_split_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_split_window_entry = {
 	"split-window", "splitw",
-	"dl:hp:Pt:v", 0, 1,
-	"[-dhvP] [-p percentage|-l size] [-t target-pane] [command]",
+	"c:dF:l:hp:Pt:v", 0, 1,
+	"[-dhvP] [-c start-directory] [-F format] [-p percentage|-l size] "
+	CMD_TARGET_PANE_USAGE " [command]",
 	0,
 	cmd_split_window_key_binding,
-	NULL,
 	cmd_split_window_exec
 };
 
@@ -48,8 +51,8 @@ cmd_split_window_key_binding(struct cmd *self, int key)
 		args_set(self->args, 'h', NULL);
 }
 
-int
-cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_split_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct session		*s;
@@ -57,16 +60,19 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct window		*w;
 	struct window_pane	*wp, *new_wp = NULL;
 	struct environ		 env;
-	const char	       	*cmd, *cwd, *shell;
-	char			*cause, *new_cause;
-	u_int			 hlimit, paneidx;
-	int			 size, percentage;
+	const char		*cmd, *shell, *template;
+	char			*cause, *new_cause, *cp;
+	u_int			 hlimit;
+	int			 size, percentage, cwd, fd = -1;
 	enum layout_type	 type;
 	struct layout_cell	*lc;
+	struct client		*c;
+	struct format_tree	*ft;
 
-	if ((wl = cmd_find_pane(ctx, args_get(args, 't'), &s, &wp)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_pane(cmdq, args_get(args, 't'), &s, &wp)) == NULL)
+		return (CMD_RETURN_ERROR);
 	w = wl->window;
+	server_unzoom_window(w);
 
 	environ_init(&env);
 	environ_copy(&global_environ, &env);
@@ -77,7 +83,32 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		cmd = options_get_string(&s->options, "default-command");
 	else
 		cmd = args->argv[0];
-	cwd = cmd_get_default_path(ctx);
+
+	if (args_has(args, 'c')) {
+		ft = format_create();
+		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c);
+		format_session(ft, s);
+		format_winlink(ft, s, s->curw);
+		format_window_pane(ft, s->curw->window->active);
+		cp = format_expand(ft, args_get(args, 'c'));
+		format_free(ft);
+
+		if (cp != NULL && *cp != '\0') {
+			fd = open(cp, O_RDONLY|O_DIRECTORY);
+			free(cp);
+			if (fd == -1) {
+				cmdq_error(cmdq, "bad working directory: %s",
+				    strerror(errno));
+				return (CMD_RETURN_ERROR);
+			}
+		} else if (cp != NULL)
+			free(cp);
+		cwd = fd;
+	} else if (cmdq->client != NULL && cmdq->client->session == NULL)
+		cwd = cmdq->client->cwd;
+	else
+		cwd = s->cwd;
 
 	type = LAYOUT_TOPBOTTOM;
 	if (args_has(args, 'h'))
@@ -88,7 +119,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		size = args_strtonum(args, 'l', 0, INT_MAX, &cause);
 		if (cause != NULL) {
 			xasprintf(&new_cause, "size %s", cause);
-			xfree(cause);
+			free(cause);
 			cause = new_cause;
 			goto error;
 		}
@@ -96,7 +127,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		percentage = args_strtonum(args, 'p', 0, INT_MAX, &cause);
 		if (cause != NULL) {
 			xasprintf(&new_cause, "percentage %s", cause);
-			xfree(cause);
+			free(cause);
 			cause = new_cause;
 			goto error;
 		}
@@ -111,7 +142,7 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	if (*shell == '\0' || areshell(shell))
 		shell = _PATH_BSHELL;
 
-	if ((lc = layout_split_pane(wp, type, size)) == NULL) {
+	if ((lc = layout_split_pane(wp, type, size, 0)) == NULL) {
 		cause = xstrdup("pane too small");
 		goto error;
 	}
@@ -133,17 +164,35 @@ cmd_split_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	environ_free(&env);
 
 	if (args_has(args, 'P')) {
-		if (window_pane_index(new_wp, &paneidx) != 0)
-			fatalx("index not found");
-		ctx->print(ctx, "%s:%u.%u", s->name, wl->idx, paneidx);
+		if ((template = args_get(args, 'F')) == NULL)
+			template = SPLIT_WINDOW_TEMPLATE;
+
+		ft = format_create();
+		if ((c = cmd_find_client(cmdq, NULL, 1)) != NULL)
+			format_client(ft, c);
+		format_session(ft, s);
+		format_winlink(ft, s, wl);
+		format_window_pane(ft, new_wp);
+
+		cp = format_expand(ft, template);
+		cmdq_print(cmdq, "%s", cp);
+		free(cp);
+
+		format_free(ft);
 	}
-	return (0);
+	notify_window_layout_changed(w);
+
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_NORMAL);
 
 error:
 	environ_free(&env);
 	if (new_wp != NULL)
 		window_remove_pane(w, new_wp);
-	ctx->error(ctx, "create pane failed: %s", cause);
-	xfree(cause);
-	return (-1);
+	cmdq_error(cmdq, "create pane failed: %s", cause);
+	free(cause);
+	if (fd != -1)
+		close(fd);
+	return (CMD_RETURN_ERROR);
 }

cmd-string.c

@@ -31,11 +31,12 @@
  * Parse a command from a string.
  */
 
-int	cmd_string_getc(const char *, size_t *);
-void	cmd_string_ungetc(size_t *);
-char   *cmd_string_string(const char *, size_t *, char, int);
-char   *cmd_string_variable(const char *, size_t *);
-char   *cmd_string_expand_tilde(const char *, size_t *);
+int	 cmd_string_getc(const char *, size_t *);
+void	 cmd_string_ungetc(size_t *);
+void	 cmd_string_copy(char **, char *, size_t *);
+char	*cmd_string_string(const char *, size_t *, char, int);
+char	*cmd_string_variable(const char *, size_t *);
+char	*cmd_string_expand_tilde(const char *, size_t *);
 
 int
 cmd_string_getc(const char *s, size_t *p)
@@ -58,7 +59,8 @@ cmd_string_ungetc(size_t *p)
  * string, or NULL for empty command.
  */
 int
-cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
+cmd_string_parse(const char *s, struct cmd_list **cmdlist, const char *file,
+    u_int line, char **cause)
 {
 	size_t		p;
 	int		ch, i, argc, rval;
@@ -84,26 +86,17 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
 		case '\'':
 			if ((t = cmd_string_string(s, &p, '\'', 0)) == NULL)
 				goto error;
-			buf = xrealloc(buf, 1, len + strlen(t) + 1);
-			strlcpy(buf + len, t, strlen(t) + 1);
-			len += strlen(t);
-			xfree(t);
+			cmd_string_copy(&buf, t, &len);
 			break;
 		case '"':
 			if ((t = cmd_string_string(s, &p, '"', 1)) == NULL)
 				goto error;
-			buf = xrealloc(buf, 1, len + strlen(t) + 1);
-			strlcpy(buf + len, t, strlen(t) + 1);
-			len += strlen(t);
-			xfree(t);
+			cmd_string_copy(&buf, t, &len);
 			break;
 		case '$':
 			if ((t = cmd_string_variable(s, &p)) == NULL)
 				goto error;
-			buf = xrealloc(buf, 1, len + strlen(t) + 1);
-			strlcpy(buf + len, t, strlen(t) + 1);
-			len += strlen(t);
-			xfree(t);
+			cmd_string_copy(&buf, t, &len);
 			break;
 		case '#':
 			/* Comment: discard rest of line. */
@@ -139,7 +132,7 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
 			if (argc == 0)
 				goto out;
 
-			*cmdlist = cmd_list_parse(argc, argv, cause);
+			*cmdlist = cmd_list_parse(argc, argv, file, line, cause);
 			if (*cmdlist == NULL)
 				goto out;
 
@@ -147,12 +140,10 @@ cmd_string_parse(const char *s, struct cmd_list **cmdlist, char **cause)
 			goto out;
 		case '~':
 			if (buf == NULL) {
-				if ((t = cmd_string_expand_tilde(s, &p)) == NULL)
+				t = cmd_string_expand_tilde(s, &p);
+				if (t == NULL)
 					goto error;
-				buf = xrealloc(buf, 1, len + strlen(t) + 1);
-				strlcpy(buf + len, t, strlen(t) + 1);
-				len += strlen(t);
-				xfree(t);
+				cmd_string_copy(&buf, t, &len);
 				break;
 			}
 			/* FALLTHROUGH */
@@ -170,18 +161,31 @@ error:
 	xasprintf(cause, "invalid or unknown command: %s", s);
 
 out:
-	if (buf != NULL)
-		xfree(buf);
+	free(buf);
 
 	if (argv != NULL) {
 		for (i = 0; i < argc; i++)
-			xfree(argv[i]);
-		xfree(argv);
+			free(argv[i]);
+		free(argv);
 	}
 
 	return (rval);
 }
 
+void
+cmd_string_copy(char **dst, char *src, size_t *len)
+{
+	size_t srclen;
+
+	srclen = strlen(src);
+
+	*dst = xrealloc(*dst, 1, *len + srclen + 1);
+	strlcpy(*dst + *len, src, srclen + 1);
+
+	*len += srclen;
+	free(src);
+}
+
 char *
 cmd_string_string(const char *s, size_t *p, char endch, int esc)
 {
@@ -221,10 +225,7 @@ cmd_string_string(const char *s, size_t *p, char endch, int esc)
 				break;
 			if ((t = cmd_string_variable(s, p)) == NULL)
 				goto error;
-			buf = xrealloc(buf, 1, len + strlen(t) + 1);
-			strlcpy(buf + len, t, strlen(t) + 1);
-			len += strlen(t);
-			xfree(t);
+			cmd_string_copy(&buf, t, &len);
 			continue;
 		}
 
@@ -239,8 +240,7 @@ cmd_string_string(const char *s, size_t *p, char endch, int esc)
 	return (buf);
 
 error:
-	if (buf != NULL)
-		xfree(buf);
+	free(buf);
 	return (NULL);
 }
 
@@ -303,14 +303,13 @@ cmd_string_variable(const char *s, size_t *p)
 	buf[len] = '\0';
 
 	envent = environ_find(&global_environ, buf);
-	xfree(buf);
+	free(buf);
 	if (envent == NULL)
 		return (xstrdup(""));
 	return (xstrdup(envent->value));
 
 error:
-	if (buf != NULL)
-		xfree(buf);
+	free(buf);
 	return (NULL);
 }
 
@@ -319,10 +318,13 @@ cmd_string_expand_tilde(const char *s, size_t *p)
 {
 	struct passwd		*pw;
 	struct environ_entry	*envent;
-	char			*home, *path, *username;
+	char			*home, *path, *user, *cp;
+	int			 last;
 
 	home = NULL;
-	if (cmd_string_getc(s, p) == '/') {
+
+	last = cmd_string_getc(s, p);
+	if (last == EOF || last == '/' || last == ' '|| last == '\t') {
 		envent = environ_find(&global_environ, "HOME");
 		if (envent != NULL && *envent->value != '\0')
 			home = envent->value;
@@ -330,15 +332,27 @@ cmd_string_expand_tilde(const char *s, size_t *p)
 			home = pw->pw_dir;
 	} else {
 		cmd_string_ungetc(p);
-		if ((username = cmd_string_string(s, p, '/', 0)) == NULL)
-			return (NULL);
-		if ((pw = getpwnam(username)) != NULL)
+
+		cp = user = xmalloc(strlen(s));
+		for (;;) {
+			last = cmd_string_getc(s, p);
+			if (last == EOF || last == '/' || last == ' '|| last == '\t')
+				break;
+			*cp++ = last;
+		}
+		*cp = '\0';
+
+		if ((pw = getpwnam(user)) != NULL)
 			home = pw->pw_dir;
-		xfree(username);
+		free(user);
 	}
+
 	if (home == NULL)
 		return (NULL);
 
-	xasprintf(&path, "%s/", home);
+	if (last != EOF)
+		xasprintf(&path, "%s%c", home, last);
+	else
+		xasprintf(&path, "%s", home);
 	return (path);
 }

cmd-suspend-client.c

@@ -27,7 +27,7 @@
  * Suspend client with SIGTSTP.
  */
 
-int	cmd_suspend_client_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_suspend_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_suspend_client_entry = {
 	"suspend-client", "suspendc",
@@ -35,22 +35,21 @@ const struct cmd_entry cmd_suspend_client_entry = {
 	CMD_TARGET_CLIENT_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_suspend_client_exec
 };
 
-int
-cmd_suspend_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_suspend_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args	*args = self->args;
 	struct client	*c;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 't'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 't'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	tty_stop_tty(&c->tty);
 	c->flags |= CLIENT_SUSPENDED;
 	server_write_client(c, MSG_SUSPEND, NULL, 0);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-swap-pane.c

@@ -26,8 +26,8 @@
  * Swap two panes.
  */
 
-void	cmd_swap_pane_key_binding(struct cmd *, int);
-int	cmd_swap_pane_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_swap_pane_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_swap_pane_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_swap_pane_entry = {
 	"swap-pane", "swapp",
@@ -35,7 +35,6 @@ const struct cmd_entry cmd_swap_pane_entry = {
 	"[-dDU] " CMD_SRCDST_PANE_USAGE,
 	0,
 	cmd_swap_pane_key_binding,
-	NULL,
 	cmd_swap_pane_exec
 };
 
@@ -49,8 +48,8 @@ cmd_swap_pane_key_binding(struct cmd *self, int key)
 		args_set(self->args, 'D', NULL);
 }
 
-int
-cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_swap_pane_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*src_wl, *dst_wl;
@@ -59,10 +58,11 @@ cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct layout_cell	*src_lc, *dst_lc;
 	u_int			 sx, sy, xoff, yoff;
 
-	dst_wl = cmd_find_pane(ctx, args_get(args, 't'), NULL, &dst_wp);
+	dst_wl = cmd_find_pane(cmdq, args_get(args, 't'), NULL, &dst_wp);
 	if (dst_wl == NULL)
-		return (-1);
+		return (CMD_RETURN_ERROR);
 	dst_w = dst_wl->window;
+	server_unzoom_window(dst_w);
 
 	if (!args_has(args, 's')) {
 		src_w = dst_w;
@@ -74,17 +74,22 @@ cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 			src_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 			if (src_wp == NULL)
 				src_wp = TAILQ_LAST(&dst_w->panes, window_panes);
-		} else
-			return (0);
+		} else {
+			src_wl = cmd_find_pane(cmdq, NULL, NULL, &src_wp);
+			if (src_wl == NULL)
+				return (CMD_RETURN_ERROR);
+			src_w = src_wl->window;
+		}
 	} else {
-		src_wl = cmd_find_pane(ctx, args_get(args, 's'), NULL, &src_wp);
+		src_wl = cmd_find_pane(cmdq, args_get(args, 's'), NULL, &src_wp);
 		if (src_wl == NULL)
-			return (-1);
+			return (CMD_RETURN_ERROR);
 		src_w = src_wl->window;
 	}
+	server_unzoom_window(src_w);
 
 	if (src_wp == dst_wp)
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	tmp_wp = TAILQ_PREV(dst_wp, window_panes, entry);
 	TAILQ_REMOVE(&dst_w->panes, dst_wp, entry);
@@ -138,5 +143,5 @@ cmd_swap_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
 	server_redraw_window(src_w);
 	server_redraw_window(dst_w);
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-swap-window.c

@@ -26,7 +26,7 @@
  * Swap one window with another.
  */
 
-int	cmd_swap_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	cmd_swap_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_swap_window_entry = {
 	"swap-window", "swapw",
@@ -34,12 +34,11 @@ const struct cmd_entry cmd_swap_window_entry = {
 	"[-d] " CMD_SRCDST_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_swap_window_exec
 };
 
-int
-cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_swap_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	const char		*target_src, *target_dst;
@@ -49,22 +48,22 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct window		*w;
 
 	target_src = args_get(args, 's');
-	if ((wl_src = cmd_find_window(ctx, target_src, &src)) == NULL)
-		return (-1);
+	if ((wl_src = cmd_find_window(cmdq, target_src, &src)) == NULL)
+		return (CMD_RETURN_ERROR);
 	target_dst = args_get(args, 't');
-	if ((wl_dst = cmd_find_window(ctx, target_dst, &dst)) == NULL)
-		return (-1);
+	if ((wl_dst = cmd_find_window(cmdq, target_dst, &dst)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	sg_src = session_group_find(src);
 	sg_dst = session_group_find(dst);
 	if (src != dst &&
 	    sg_src != NULL && sg_dst != NULL && sg_src == sg_dst) {
-		ctx->error(ctx, "can't move window, sessions are grouped");
-		return (-1);
+		cmdq_error(cmdq, "can't move window, sessions are grouped");
+		return (CMD_RETURN_ERROR);
 	}
 
 	if (wl_dst->window == wl_src->window)
-		return (0);
+		return (CMD_RETURN_NORMAL);
 
 	w = wl_dst->window;
 	wl_dst->window = wl_src->window;
@@ -83,5 +82,5 @@ cmd_swap_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	}
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-switch-client.c

@@ -27,8 +27,8 @@
  * Switch client to a different session.
  */
 
-void	cmd_switch_client_key_binding(struct cmd *, int);
-int	cmd_switch_client_exec(struct cmd *, struct cmd_ctx *);
+void		 cmd_switch_client_key_binding(struct cmd *, int);
+enum cmd_retval	 cmd_switch_client_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_switch_client_entry = {
 	"switch-client", "switchc",
@@ -36,7 +36,6 @@ const struct cmd_entry cmd_switch_client_entry = {
 	"[-lnpr] [-c target-client] [-t target-session]",
 	CMD_READONLY,
 	cmd_switch_client_key_binding,
-	NULL,
 	cmd_switch_client_exec
 };
 
@@ -57,48 +56,75 @@ cmd_switch_client_key_binding(struct cmd *self, int key)
 	}
 }
 
-int
-cmd_switch_client_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_switch_client_exec(struct cmd *self, struct cmd_q *cmdq)
 {
-	struct args	*args = self->args;
-	struct client	*c;
-	struct session	*s;
+	struct args		*args = self->args;
+	struct client		*c;
+	struct session		*s = NULL;
+	struct winlink		*wl = NULL;
+	struct window 		*w = NULL;
+	struct window_pane	*wp = NULL;
+	const char		*tflag;
 
-	if ((c = cmd_find_client(ctx, args_get(args, 'c'))) == NULL)
-		return (-1);
+	if ((c = cmd_find_client(cmdq, args_get(args, 'c'), 0)) == NULL)
+		return (CMD_RETURN_ERROR);
 
 	if (args_has(args, 'r')) {
 		if (c->flags & CLIENT_READONLY) {
 			c->flags &= ~CLIENT_READONLY;
-			ctx->info(ctx, "made client writable");
+			cmdq_info(cmdq, "made client writable");
 		} else {
 			c->flags |= CLIENT_READONLY;
-			ctx->info(ctx, "made client read-only");
+			cmdq_info(cmdq, "made client read-only");
 		}
 	}
 
-	s = NULL;
+	tflag = args_get(args, 't');
 	if (args_has(args, 'n')) {
 		if ((s = session_next_session(c->session)) == NULL) {
-			ctx->error(ctx, "can't find next session");
-			return (-1);
+			cmdq_error(cmdq, "can't find next session");
+			return (CMD_RETURN_ERROR);
 		}
 	} else if (args_has(args, 'p')) {
 		if ((s = session_previous_session(c->session)) == NULL) {
-			ctx->error(ctx, "can't find previous session");
-			return (-1);
+			cmdq_error(cmdq, "can't find previous session");
+			return (CMD_RETURN_ERROR);
 		}
 	} else if (args_has(args, 'l')) {
 		if (c->last_session != NULL && session_alive(c->last_session))
 			s = c->last_session;
 		if (s == NULL) {
-			ctx->error(ctx, "can't find last session");
-			return (-1);
+			cmdq_error(cmdq, "can't find last session");
+			return (CMD_RETURN_ERROR);
 		}
-	} else
-		s = cmd_find_session(ctx, args_get(args, 't'), 0);
-	if (s == NULL)
-		return (-1);
+	} else {
+		if (tflag == NULL) {
+			if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
+				return (CMD_RETURN_ERROR);
+		} else if (tflag[strcspn(tflag, ":.")] != '\0') {
+			if ((wl = cmd_find_pane(cmdq, tflag, &s, &wp)) == NULL)
+				return (CMD_RETURN_ERROR);
+		} else {
+			if ((s = cmd_find_session(cmdq, tflag, 1)) == NULL)
+				return (CMD_RETURN_ERROR);
+			w = cmd_lookup_windowid(tflag);
+			if (w == NULL &&
+			    (wp = cmd_lookup_paneid(tflag)) != NULL)
+				w = wp->window;
+			if (w != NULL)
+				wl = winlink_find_by_window(&s->windows, w);
+		}
+
+		if (cmdq->client == NULL)
+			return (CMD_RETURN_NORMAL);
+
+		if (wl != NULL) {
+			if (wp != NULL)
+				window_set_active_pane(wp->window, wp);
+			session_set_current(s, wl);
+		}
+	}
 
 	if (c->session != NULL)
 		c->last_session = c->session;
@@ -110,5 +136,5 @@ cmd_switch_client_exec(struct cmd *self, struct cmd_ctx *ctx)
 	server_redraw_client(c);
 	s->curw->flags &= ~WINLINK_ALERTFLAGS;
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-unbind-key.c

@@ -18,16 +18,16 @@
 
 #include <sys/types.h>
 
+#include <stdlib.h>
+
 #include "tmux.h"
 
 /*
  * Unbind key from command.
  */
 
-int	cmd_unbind_key_check(struct args *);
-int	cmd_unbind_key_exec(struct cmd *, struct cmd_ctx *);
-
-int	cmd_unbind_key_table(struct cmd *, struct cmd_ctx *, int);
+enum cmd_retval	 cmd_unbind_key_exec(struct cmd *, struct cmd_q *);
+enum cmd_retval	 cmd_unbind_key_table(struct cmd *, struct cmd_q *, int);
 
 const struct cmd_entry cmd_unbind_key_entry = {
 	"unbind-key", "unbind",
@@ -35,52 +35,53 @@ const struct cmd_entry cmd_unbind_key_entry = {
 	"[-acn] [-t key-table] key",
 	0,
 	NULL,
-	cmd_unbind_key_check,
 	cmd_unbind_key_exec
 };
 
-int
-cmd_unbind_key_check(struct args *args)
-{
-	if (args_has(args, 'a') && (args->argc != 0 || args_has(args, 't')))
-	    return (-1);
-	if (!args_has(args, 'a') && args->argc != 1)
-		return (-1);
-	return (0);
-}
-
-int
-cmd_unbind_key_exec(struct cmd *self, unused struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_unbind_key_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct key_binding	*bd;
 	int			 key;
 
-	if (args_has(args, 'a')) {
+	if (!args_has(args, 'a')) {
+		if (args->argc != 1) {
+			cmdq_error(cmdq, "missing key");
+			return (CMD_RETURN_ERROR);
+		}
+		key = key_string_lookup_string(args->argv[0]);
+		if (key == KEYC_NONE) {
+			cmdq_error(cmdq, "unknown key: %s", args->argv[0]);
+			return (CMD_RETURN_ERROR);
+		}
+	} else {
+		if (args->argc != 0) {
+			cmdq_error(cmdq, "key given with -a");
+			return (CMD_RETURN_ERROR);
+		}
+		key = KEYC_NONE;
+	}
+
+	if (args_has(args, 't'))
+		return (cmd_unbind_key_table(self, cmdq, key));
+
+	if (key == KEYC_NONE) {
 		while (!RB_EMPTY(&key_bindings)) {
 			bd = RB_ROOT(&key_bindings);
 			key_bindings_remove(bd->key);
 		}
-		return (0);
+		return (CMD_RETURN_NORMAL);
 	}
 
-	key = key_string_lookup_string(args->argv[0]);
-	if (key == KEYC_NONE) {
-		ctx->error(ctx, "unknown key: %s", args->argv[0]);
-		return (-1);
-	}
-
-	if (args_has(args, 't'))
-		return (cmd_unbind_key_table(self, ctx, key));
-
 	if (!args_has(args, 'n'))
 		key |= KEYC_PREFIX;
 	key_bindings_remove(key);
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }
 
-int
-cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
+enum cmd_retval
+cmd_unbind_key_table(struct cmd *self, struct cmd_q *cmdq, int key)
 {
 	struct args			*args = self->args;
 	const char			*tablename;
@@ -89,15 +90,24 @@ cmd_unbind_key_table(struct cmd *self, struct cmd_ctx *ctx, int key)
 
 	tablename = args_get(args, 't');
 	if ((mtab = mode_key_findtable(tablename)) == NULL) {
-		ctx->error(ctx, "unknown key table: %s", tablename);
-		return (-1);
+		cmdq_error(cmdq, "unknown key table: %s", tablename);
+		return (CMD_RETURN_ERROR);
+	}
+
+	if (key == KEYC_NONE) {
+		while (!RB_EMPTY(mtab->tree)) {
+			mbind = RB_ROOT(mtab->tree);
+			RB_REMOVE(mode_key_tree, mtab->tree, mbind);
+			free(mbind);
+		}
+		return (CMD_RETURN_NORMAL);
 	}
 
 	mtmp.key = key;
 	mtmp.mode = !!args_has(args, 'c');
 	if ((mbind = RB_FIND(mode_key_tree, mtab->tree, &mtmp)) != NULL) {
 		RB_REMOVE(mode_key_tree, mtab->tree, mbind);
-		xfree(mbind);
+		free(mbind);
 	}
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-unlink-window.c

@@ -24,7 +24,7 @@
  * Unlink a window, unless it would be destroyed by doing so (only one link).
  */
 
-int	cmd_unlink_window_exec(struct cmd *, struct cmd_ctx *);
+enum cmd_retval	 cmd_unlink_window_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_unlink_window_entry = {
 	"unlink-window", "unlinkw",
@@ -32,12 +32,11 @@ const struct cmd_entry cmd_unlink_window_entry = {
 	"[-k] " CMD_TARGET_WINDOW_USAGE,
 	0,
 	NULL,
-	NULL,
 	cmd_unlink_window_exec
 };
 
-int
-cmd_unlink_window_exec(struct cmd *self, struct cmd_ctx *ctx)
+enum cmd_retval
+cmd_unlink_window_exec(struct cmd *self, struct cmd_q *cmdq)
 {
 	struct args		*args = self->args;
 	struct winlink		*wl;
@@ -46,8 +45,8 @@ cmd_unlink_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 	struct session_group	*sg;
 	u_int			 references;
 
-	if ((wl = cmd_find_window(ctx, args_get(args, 't'), &s)) == NULL)
-		return (-1);
+	if ((wl = cmd_find_window(cmdq, args_get(args, 't'), &s)) == NULL)
+		return (CMD_RETURN_ERROR);
 	w = wl->window;
 
 	sg = session_group_find(s);
@@ -59,12 +58,12 @@ cmd_unlink_window_exec(struct cmd *self, struct cmd_ctx *ctx)
 		references = 1;
 
 	if (!args_has(self->args, 'k') && w->references == references) {
-		ctx->error(ctx, "window is only linked to one session");
-		return (-1);
+		cmdq_error(cmdq, "window is only linked to one session");
+		return (CMD_RETURN_ERROR);
 	}
 
 	server_unlink_window(s, wl);
 	recalculate_sizes();
 
-	return (0);
+	return (CMD_RETURN_NORMAL);
 }

cmd-wait-for.c

@@ -0,0 +1,196 @@
+/* $Id$ */
+
+/*
+ * Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
+ * Copyright (c) 2013 Thiago de Arruda <tpadilha84@gmail.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "tmux.h"
+
+/*
+ * Block or wake a client on a named wait channel.
+ */
+
+enum cmd_retval cmd_wait_for_exec(struct cmd *, struct cmd_q *);
+
+const struct cmd_entry cmd_wait_for_entry = {
+	"wait-for", "wait",
+	"LSU", 1, 1,
+	"[-L|-S|-U] channel",
+	0,
+	NULL,
+	cmd_wait_for_exec
+};
+
+struct wait_channel {
+	const char	       *name;
+	int			locked;
+
+	TAILQ_HEAD(, cmd_q)	waiters;
+	TAILQ_HEAD(, cmd_q)	lockers;
+
+	RB_ENTRY(wait_channel)	entry;
+};
+RB_HEAD(wait_channels, wait_channel);
+struct wait_channels wait_channels = RB_INITIALIZER(wait_channels);
+
+int	wait_channel_cmp(struct wait_channel *, struct wait_channel *);
+RB_PROTOTYPE(wait_channels, wait_channel, entry, wait_channel_cmp);
+RB_GENERATE(wait_channels, wait_channel, entry, wait_channel_cmp);
+
+int
+wait_channel_cmp(struct wait_channel *wc1, struct wait_channel *wc2)
+{
+	return (strcmp(wc1->name, wc2->name));
+}
+
+enum cmd_retval	cmd_wait_for_signal(struct cmd_q *, const char *,
+		    struct wait_channel *);
+enum cmd_retval	cmd_wait_for_wait(struct cmd_q *, const char *,
+		    struct wait_channel *);
+enum cmd_retval	cmd_wait_for_lock(struct cmd_q *, const char *,
+		    struct wait_channel *);
+enum cmd_retval	cmd_wait_for_unlock(struct cmd_q *, const char *,
+		    struct wait_channel *);
+
+enum cmd_retval
+cmd_wait_for_exec(struct cmd *self, struct cmd_q *cmdq)
+{
+	struct args     	*args = self->args;
+	const char		*name = args->argv[0];
+	struct wait_channel	*wc, wc0;
+
+	wc0.name = name;
+	wc = RB_FIND(wait_channels, &wait_channels, &wc0);
+
+	if (args_has(args, 'S'))
+		return (cmd_wait_for_signal(cmdq, name, wc));
+	if (args_has(args, 'L'))
+		return (cmd_wait_for_lock(cmdq, name, wc));
+	if (args_has(args, 'U'))
+		return (cmd_wait_for_unlock(cmdq, name, wc));
+	return (cmd_wait_for_wait(cmdq, name, wc));
+}
+
+enum cmd_retval
+cmd_wait_for_signal(struct cmd_q *cmdq, const char *name,
+    struct wait_channel *wc)
+{
+	struct cmd_q	*wq, *wq1;
+
+	if (wc == NULL || TAILQ_EMPTY(&wc->waiters)) {
+		cmdq_error(cmdq, "no waiting clients on %s", name);
+		return (CMD_RETURN_ERROR);
+	}
+
+	TAILQ_FOREACH_SAFE(wq, &wc->waiters, waitentry, wq1) {
+		TAILQ_REMOVE(&wc->waiters, wq, waitentry);
+		if (!cmdq_free(wq))
+			cmdq_continue(wq);
+	}
+
+	if (!wc->locked) {
+		RB_REMOVE(wait_channels, &wait_channels, wc);
+		free((void*) wc->name);
+		free(wc);
+	}
+
+	return (CMD_RETURN_NORMAL);
+}
+
+enum cmd_retval
+cmd_wait_for_wait(struct cmd_q *cmdq, const char *name,
+    struct wait_channel *wc)
+{
+	if (cmdq->client == NULL || cmdq->client->session != NULL) {
+		cmdq_error(cmdq, "not able to wait");
+		return (CMD_RETURN_ERROR);
+	}
+
+	if (wc == NULL) {
+		wc = xmalloc(sizeof *wc);
+		wc->name = xstrdup(name);
+		wc->locked = 0;
+		TAILQ_INIT(&wc->waiters);
+		TAILQ_INIT(&wc->lockers);
+		RB_INSERT(wait_channels, &wait_channels, wc);
+	}
+
+	TAILQ_INSERT_TAIL(&wc->waiters, cmdq, waitentry);
+	cmdq->references++;
+
+	return (CMD_RETURN_WAIT);
+}
+
+enum cmd_retval
+cmd_wait_for_lock(struct cmd_q *cmdq, const char *name,
+    struct wait_channel *wc)
+{
+	if (cmdq->client == NULL || cmdq->client->session != NULL) {
+		cmdq_error(cmdq, "not able to lock");
+		return (CMD_RETURN_ERROR);
+	}
+
+	if (wc == NULL) {
+		wc = xmalloc(sizeof *wc);
+		wc->name = xstrdup(name);
+		wc->locked = 0;
+		TAILQ_INIT(&wc->waiters);
+		TAILQ_INIT(&wc->lockers);
+		RB_INSERT(wait_channels, &wait_channels, wc);
+	}
+
+	if (wc->locked) {
+		TAILQ_INSERT_TAIL(&wc->lockers, cmdq, waitentry);
+		cmdq->references++;
+		return (CMD_RETURN_WAIT);
+	}
+	wc->locked = 1;
+
+	return (CMD_RETURN_NORMAL);
+}
+
+enum cmd_retval
+cmd_wait_for_unlock(struct cmd_q *cmdq, const char *name,
+    struct wait_channel *wc)
+{
+	struct cmd_q	*wq;
+
+	if (wc == NULL || !wc->locked) {
+		cmdq_error(cmdq, "channel %s not locked", name);
+		return (CMD_RETURN_ERROR);
+	}
+
+	if ((wq = TAILQ_FIRST(&wc->lockers)) != NULL) {
+		TAILQ_REMOVE(&wc->lockers, wq, waitentry);
+		if (!cmdq_free(wq))
+			cmdq_continue(wq);
+	} else {
+		wc->locked = 0;
+		if (TAILQ_EMPTY(&wc->waiters)) {
+			RB_REMOVE(wait_channels, &wait_channels, wc);
+			free((void*) wc->name);
+			free(wc);
+		}
+	}
+
+	return (CMD_RETURN_NORMAL);
+}
+

cmd.c

@@ -20,6 +20,7 @@
 #include <sys/time.h>
 
 #include <fnmatch.h>
+#include <pwd.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
@@ -33,7 +34,9 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_capture_pane_entry,
 	&cmd_choose_buffer_entry,
 	&cmd_choose_client_entry,
+	&cmd_choose_list_entry,
 	&cmd_choose_session_entry,
+	&cmd_choose_tree_entry,
 	&cmd_choose_window_entry,
 	&cmd_clear_history_entry,
 	&cmd_clock_mode_entry,
@@ -66,6 +69,7 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_lock_client_entry,
 	&cmd_lock_server_entry,
 	&cmd_lock_session_entry,
+	&cmd_move_pane_entry,
 	&cmd_move_window_entry,
 	&cmd_new_session_entry,
 	&cmd_new_window_entry,
@@ -108,19 +112,22 @@ const struct cmd_entry *cmd_table[] = {
 	&cmd_switch_client_entry,
 	&cmd_unbind_key_entry,
 	&cmd_unlink_window_entry,
+	&cmd_wait_for_entry,
 	NULL
 };
 
+int		 cmd_session_better(struct session *, struct session *, int);
 struct session	*cmd_choose_session_list(struct sessionslist *);
 struct session	*cmd_choose_session(int);
 struct client	*cmd_choose_client(struct clients *);
 struct client	*cmd_lookup_client(const char *);
 struct session	*cmd_lookup_session(const char *, int *);
+struct session	*cmd_lookup_session_id(const char *);
 struct winlink	*cmd_lookup_window(struct session *, const char *, int *);
 int		 cmd_lookup_index(struct session *, const char *, int *);
-struct window_pane *cmd_lookup_paneid(const char *);
-struct session	*cmd_pane_session(struct cmd_ctx *,
-		    struct window_pane *, struct winlink **);
+struct winlink	*cmd_lookup_winlink_windowid(struct session *, const char *);
+struct session	*cmd_window_session(struct cmd_q *, struct window *,
+		    struct winlink **);
 struct winlink	*cmd_find_window_offset(const char *, struct session *, int *);
 int		 cmd_find_index_offset(const char *, struct session *, int *);
 struct window_pane *cmd_find_pane_offset(const char *, struct winlink *);
@@ -192,15 +199,13 @@ cmd_free_argv(int argc, char **argv)
 
 	if (argc == 0)
 		return;
-	for (i = 0; i < argc; i++) {
-		if (argv[i] != NULL)
-			xfree(argv[i]);
-	}
-	xfree(argv);
+	for (i = 0; i < argc; i++)
+		free(argv[i]);
+	free(argv);
 }
 
 struct cmd *
-cmd_parse(int argc, char **argv, char **cause)
+cmd_parse(int argc, char **argv, const char *file, u_int line, char **cause)
 {
 	const struct cmd_entry **entryp, *entry;
 	struct cmd		*cmd;
@@ -247,12 +252,15 @@ cmd_parse(int argc, char **argv, char **cause)
 		goto usage;
 	if (entry->args_upper != -1 && args->argc > entry->args_upper)
 		goto usage;
-	if (entry->check != NULL && entry->check(args) != 0)
-		goto usage;
 
-	cmd = xmalloc(sizeof *cmd);
+	cmd = xcalloc(1, sizeof *cmd);
 	cmd->entry = entry;
 	cmd->args = args;
+
+	if (file != NULL)
+		cmd->file = xstrdup(file);
+	cmd->line = line;
+
 	return (cmd);
 
 ambiguous:
@@ -276,34 +284,19 @@ usage:
 	return (NULL);
 }
 
-int
-cmd_exec(struct cmd *cmd, struct cmd_ctx *ctx)
-{
-	return (cmd->entry->exec(cmd, ctx));
-}
-
-void
-cmd_free(struct cmd *cmd)
-{
-	if (cmd->args != NULL)
-		args_free(cmd->args);
-	xfree(cmd);
-}
-
 size_t
 cmd_print(struct cmd *cmd, char *buf, size_t len)
 {
 	size_t	off, used;
 
 	off = xsnprintf(buf, len, "%s ", cmd->entry->name);
-	if (off < len) {
-		used = args_print(cmd->args, buf + off, len - off);
+	if (off + 1 < len) {
+		used = args_print(cmd->args, buf + off, len - off - 1);
 		if (used == 0)
-			buf[off - 1] = '\0';
-		else {
+			off--;
+		else
 			off += used;
-			buf[off] = '\0';
-		}
+		buf[off] = '\0';
 	}
 	return (off);
 }
@@ -316,31 +309,32 @@ cmd_print(struct cmd *cmd, char *buf, size_t len)
  * session from all sessions.
  */
 struct session *
-cmd_current_session(struct cmd_ctx *ctx, int prefer_unattached)
+cmd_current_session(struct cmd_q *cmdq, int prefer_unattached)
 {
-	struct msg_command_data	*data = ctx->msgdata;
-	struct client		*c = ctx->cmdclient;
+	struct client		*c = cmdq->client;
 	struct session		*s;
 	struct sessionslist	 ss;
 	struct winlink		*wl;
 	struct window_pane	*wp;
+	const char		*path;
 	int			 found;
 
-	if (ctx->curclient != NULL && ctx->curclient->session != NULL)
-		return (ctx->curclient->session);
+	if (c != NULL && c->session != NULL)
+		return (c->session);
 
 	/*
-	 * If the name of the calling client's pty is know, build a list of the
-	 * sessions that contain it and if any choose either the first or the
-	 * newest.
+	 * If the name of the calling client's pty is known, build a list of
+	 * the sessions that contain it and if any choose either the first or
+	 * the newest.
 	 */
-	if (c != NULL && c->tty.path != NULL) {
+	path = c == NULL ? NULL : c->tty.path;
+	if (path != NULL) {
 		ARRAY_INIT(&ss);
 		RB_FOREACH(s, sessions, &sessions) {
 			found = 0;
 			RB_FOREACH(wl, winlinks, &s->windows) {
 				TAILQ_FOREACH(wp, &wl->window->panes, entry) {
-					if (strcmp(wp->tty, c->tty.path) == 0) {
+					if (strcmp(wp->tty, path) == 0) {
 						found = 1;
 						break;
 					}
@@ -358,16 +352,27 @@ cmd_current_session(struct cmd_ctx *ctx, int prefer_unattached)
 			return (s);
 	}
 
-	/* Use the session from the TMUX environment variable. */
-	if (data != NULL && data->pid == getpid() && data->idx != -1) {
-		s = session_find_by_index(data->idx);
-		if (s != NULL)
-			return (s);
-	}
-
 	return (cmd_choose_session(prefer_unattached));
 }
 
+/* Is this session better? */
+int
+cmd_session_better(struct session *s, struct session *best,
+    int prefer_unattached)
+{
+	if (best == NULL)
+		return (1);
+	if (prefer_unattached) {
+		if (!(best->flags & SESSION_UNATTACHED) &&
+		    (s->flags & SESSION_UNATTACHED))
+			return (1);
+		else if ((best->flags & SESSION_UNATTACHED) &&
+		    !(s->flags & SESSION_UNATTACHED))
+			return (0);
+	}
+	return (timercmp(&s->activity_time, &best->activity_time, >));
+}
+
 /*
  * Find the most recently used session, preferring unattached if the flag is
  * set.
@@ -375,21 +380,14 @@ cmd_current_session(struct cmd_ctx *ctx, int prefer_unattached)
 struct session *
 cmd_choose_session(int prefer_unattached)
 {
-	struct session	*s, *sbest;
-	struct timeval	*tv = NULL;
+	struct session	*s, *best;
 
-	sbest = NULL;
+	best = NULL;
 	RB_FOREACH(s, sessions, &sessions) {
-		if (tv == NULL || timercmp(&s->activity_time, tv, >) ||
-		    (prefer_unattached &&
-		    !(sbest->flags & SESSION_UNATTACHED) &&
-		    (s->flags & SESSION_UNATTACHED))) {
-			sbest = s;
-			tv = &s->activity_time;
-		}
+		if (cmd_session_better(s, best, prefer_unattached))
+			best = s;
 	}
-
-	return (sbest);
+	return (best);
 }
 
 /* Find the most recently used session from a list. */
@@ -420,21 +418,21 @@ cmd_choose_session_list(struct sessionslist *ss)
  * then of all clients.
  */
 struct client *
-cmd_current_client(struct cmd_ctx *ctx)
+cmd_current_client(struct cmd_q *cmdq)
 {
 	struct session		*s;
 	struct client		*c;
 	struct clients		 cc;
 	u_int			 i;
 
-	if (ctx->curclient != NULL)
-		return (ctx->curclient);
+	if (cmdq->client != NULL && cmdq->client->session != NULL)
+		return (cmdq->client);
 
 	/*
 	 * No current client set. Find the current session and return the
 	 * newest of its clients.
 	 */
-	s = cmd_current_session(ctx, 0);
+	s = cmd_current_session(cmdq, 0);
 	if (s != NULL && !(s->flags & SESSION_UNATTACHED)) {
 		ARRAY_INIT(&cc);
 		for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
@@ -479,15 +477,19 @@ cmd_choose_client(struct clients *cc)
 
 /* Find the target client or report an error and return NULL. */
 struct client *
-cmd_find_client(struct cmd_ctx *ctx, const char *arg)
+cmd_find_client(struct cmd_q *cmdq, const char *arg, int quiet)
 {
 	struct client	*c;
 	char		*tmparg;
 	size_t		 arglen;
 
 	/* A NULL argument means the current client. */
-	if (arg == NULL)
-		return (cmd_current_client(ctx));
+	if (arg == NULL) {
+		c = cmd_current_client(cmdq);
+		if (c == NULL && !quiet)
+			cmdq_error(cmdq, "no clients");
+		return (c);
+	}
 	tmparg = xstrdup(arg);
 
 	/* Trim a single trailing colon if any. */
@@ -499,10 +501,10 @@ cmd_find_client(struct cmd_ctx *ctx, const char *arg)
 	c = cmd_lookup_client(tmparg);
 
 	/* If no client found, report an error. */
-	if (c == NULL)
-		ctx->error(ctx, "client not found: %s", tmparg);
+	if (c == NULL && !quiet)
+		cmdq_error(cmdq, "client not found: %s", tmparg);
 
-	xfree(tmparg);
+	free(tmparg);
 	return (c);
 }
 
@@ -519,7 +521,7 @@ cmd_lookup_client(const char *name)
 
 	for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 		c = ARRAY_ITEM(&clients, i);
-		if (c == NULL || c->session == NULL)
+		if (c == NULL || c->session == NULL || c->tty.path == NULL)
 			continue;
 		path = c->tty.path;
 
@@ -537,6 +539,21 @@ cmd_lookup_client(const char *name)
 	return (NULL);
 }
 
+/* Find the target session or report an error and return NULL. */
+struct session *
+cmd_lookup_session_id(const char *arg)
+{
+	char	*endptr;
+	long	 id;
+
+	if (arg[0] != '$')
+		return (NULL);
+	id = strtol(arg + 1, &endptr, 10);
+	if (arg[1] != '\0' && *endptr == '\0')
+		return (session_find_by_id(id));
+	return (NULL);
+}
+
 /* Lookup a session by name. If no session is found, NULL is returned. */
 struct session *
 cmd_lookup_session(const char *name, int *ambiguous)
@@ -545,6 +562,10 @@ cmd_lookup_session(const char *name, int *ambiguous)
 
 	*ambiguous = 0;
 
+	/* Look for $id first. */
+	if ((s = cmd_lookup_session_id(name)) != NULL)
+		return (s);
+
 	/*
 	 * Look for matches. First look for exact matches - session names must
 	 * be unique so an exact match can't be ambigious and can just be
@@ -586,6 +607,10 @@ cmd_lookup_window(struct session *s, const char *name, int *ambiguous)
 
 	*ambiguous = 0;
 
+	/* Try as a window id. */
+	if ((wl = cmd_lookup_winlink_windowid(s, name)) != NULL)
+	    return (wl);
+
 	/* First see if this is a valid window index in this session. */
 	idx = strtonum(name, 0, INT_MAX, &errstr);
 	if (errstr == NULL) {
@@ -648,10 +673,7 @@ cmd_lookup_index(struct session *s, const char *name, int *ambiguous)
 	return (-1);
 }
 
-/*
- * Lookup pane id. An initial % means a pane id. sp must already point to the
- * current session.
- */
+/* Lookup pane id. An initial % means a pane id. */
 struct window_pane *
 cmd_lookup_paneid(const char *arg)
 {
@@ -667,19 +689,50 @@ cmd_lookup_paneid(const char *arg)
 	return (window_pane_find_by_id(paneid));
 }
 
-/* Find session and winlink for pane. */
+/* Lookup window id in a session. An initial @ means a window id. */
+struct winlink *
+cmd_lookup_winlink_windowid(struct session *s, const char *arg)
+{
+	const char	*errstr;
+	u_int		 windowid;
+
+	if (*arg != '@')
+		return (NULL);
+
+	windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
+	if (errstr != NULL)
+		return (NULL);
+	return (winlink_find_by_window_id(&s->windows, windowid));
+}
+
+/* Lookup window id. An initial @ means a window id. */
+struct window *
+cmd_lookup_windowid(const char *arg)
+{
+	const char	*errstr;
+	u_int		 windowid;
+
+	if (*arg != '@')
+		return (NULL);
+
+	windowid = strtonum(arg + 1, 0, UINT_MAX, &errstr);
+	if (errstr != NULL)
+		return (NULL);
+	return (window_find_by_id(windowid));
+}
+
+/* Find session and winlink for window. */
 struct session *
-cmd_pane_session(struct cmd_ctx *ctx, struct window_pane *wp,
-    struct winlink **wlp)
+cmd_window_session(struct cmd_q *cmdq, struct window *w, struct winlink **wlp)
 {
 	struct session		*s;
 	struct sessionslist	 ss;
 	struct winlink		*wl;
 
-	/* If this pane is in the current session, return that winlink. */
-	s = cmd_current_session(ctx, 0);
+	/* If this window is in the current session, return that winlink. */
+	s = cmd_current_session(cmdq, 0);
 	if (s != NULL) {
-		wl = winlink_find_by_window(&s->windows, wp->window);
+		wl = winlink_find_by_window(&s->windows, w);
 		if (wl != NULL) {
 			if (wlp != NULL)
 				*wlp = wl;
@@ -687,25 +740,26 @@ cmd_pane_session(struct cmd_ctx *ctx, struct window_pane *wp,
 		}
 	}
 
-	/* Otherwise choose from all sessions with this pane. */
+	/* Otherwise choose from all sessions with this window. */
 	ARRAY_INIT(&ss);
 	RB_FOREACH(s, sessions, &sessions) {
-		if (winlink_find_by_window(&s->windows, wp->window) != NULL)
+		if (winlink_find_by_window(&s->windows, w) != NULL)
 			ARRAY_ADD(&ss, s);
 	}
 	s = cmd_choose_session_list(&ss);
 	ARRAY_FREE(&ss);
 	if (wlp != NULL)
-		*wlp = winlink_find_by_window(&s->windows, wp->window);
+		*wlp = winlink_find_by_window(&s->windows, w);
 	return (s);
 }
 
 /* Find the target session or report an error and return NULL. */
 struct session *
-cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached)
+cmd_find_session(struct cmd_q *cmdq, const char *arg, int prefer_unattached)
 {
 	struct session		*s;
 	struct window_pane	*wp;
+	struct window		*w;
 	struct client		*c;
 	char			*tmparg;
 	size_t			 arglen;
@@ -713,11 +767,13 @@ cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached)
 
 	/* A NULL argument means the current session. */
 	if (arg == NULL)
-		return (cmd_current_session(ctx, prefer_unattached));
+		return (cmd_current_session(cmdq, prefer_unattached));
 
-	/* Lookup as pane id. */
+	/* Lookup as pane id or window id. */
 	if ((wp = cmd_lookup_paneid(arg)) != NULL)
-		return (cmd_pane_session(ctx, wp, NULL));
+		return (cmd_window_session(cmdq, wp->window, NULL));
+	if ((w = cmd_lookup_windowid(arg)) != NULL)
+		return (cmd_window_session(cmdq, w, NULL));
 
 	/* Trim a single trailing colon if any. */
 	tmparg = xstrdup(arg);
@@ -727,8 +783,8 @@ cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached)
 
 	/* An empty session name is the current session. */
 	if (*tmparg == '\0') {
-		xfree(tmparg);
-		return (cmd_current_session(ctx, prefer_unattached));
+		free(tmparg);
+		return (cmd_current_session(cmdq, prefer_unattached));
 	}
 
 	/* Find the session, if any. */
@@ -741,18 +797,18 @@ cmd_find_session(struct cmd_ctx *ctx, const char *arg, int prefer_unattached)
 	/* If no session found, report an error. */
 	if (s == NULL) {
 		if (ambiguous)
-			ctx->error(ctx, "more than one session: %s", tmparg);
+			cmdq_error(cmdq, "more than one session: %s", tmparg);
 		else
-			ctx->error(ctx, "session not found: %s", tmparg);
+			cmdq_error(cmdq, "session not found: %s", tmparg);
 	}
 
-	xfree(tmparg);
+	free(tmparg);
 	return (s);
 }
 
 /* Find the target session and window or report an error and return NULL. */
 struct winlink *
-cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
+cmd_find_window(struct cmd_q *cmdq, const char *arg, struct session **sp)
 {
 	struct session		*s;
 	struct winlink		*wl;
@@ -765,8 +821,8 @@ cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 	 * Find the current session. There must always be a current session, if
 	 * it can't be found, report an error.
 	 */
-	if ((s = cmd_current_session(ctx, 0)) == NULL) {
-		ctx->error(ctx, "can't establish current session");
+	if ((s = cmd_current_session(cmdq, 0)) == NULL) {
+		cmdq_error(cmdq, "can't establish current session");
 		return (NULL);
 	}
 
@@ -779,7 +835,7 @@ cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 
 	/* Lookup as pane id. */
 	if ((wp = cmd_lookup_paneid(arg)) != NULL) {
-		s = cmd_pane_session(ctx, wp, &wl);
+		s = cmd_window_session(cmdq, wp->window, &wl);
 		if (sp != NULL)
 			*sp = s;
 		return (wl);
@@ -813,6 +869,10 @@ cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 		wl = s->curw;
 	else if (winptr[0] == '!' && winptr[1] == '\0')
 		wl = TAILQ_FIRST(&s->lastw);
+	else if (winptr[0] == '^' && winptr[1] == '\0')
+		wl = RB_MIN(winlinks, &s->windows);
+	else if (winptr[0] == '$' && winptr[1] == '\0')
+		wl = RB_MAX(winlinks, &s->windows);
 	else if (winptr[0] == '+' || winptr[0] == '-')
 		wl = cmd_find_window_offset(winptr, s, &ambiguous);
 	else
@@ -821,7 +881,7 @@ cmd_find_window(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 		goto not_found;
 
 	if (sessptr != NULL)
-		xfree(sessptr);
+		free(sessptr);
 	return (wl);
 
 no_colon:
@@ -856,20 +916,18 @@ lookup_session:
 
 no_session:
 	if (ambiguous)
-		ctx->error(ctx, "multiple sessions: %s", arg);
+		cmdq_error(cmdq, "multiple sessions: %s", arg);
 	else
-		ctx->error(ctx, "session not found: %s", arg);
-	if (sessptr != NULL)
-		xfree(sessptr);
+		cmdq_error(cmdq, "session not found: %s", arg);
+	free(sessptr);
 	return (NULL);
 
 not_found:
 	if (ambiguous)
-		ctx->error(ctx, "multiple windows: %s", arg);
+		cmdq_error(cmdq, "multiple windows: %s", arg);
 	else
-		ctx->error(ctx, "window not found: %s", arg);
-	if (sessptr != NULL)
-		xfree(sessptr);
+		cmdq_error(cmdq, "window not found: %s", arg);
+	free(sessptr);
 	return (NULL);
 }
 
@@ -900,7 +958,7 @@ cmd_find_window_offset(const char *winptr, struct session *s, int *ambiguous)
  * example if it is going to be created).
  */
 int
-cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
+cmd_find_index(struct cmd_q *cmdq, const char *arg, struct session **sp)
 {
 	struct session	*s;
 	struct winlink	*wl;
@@ -912,8 +970,8 @@ cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 	 * Find the current session. There must always be a current session, if
 	 * it can't be found, report an error.
 	 */
-	if ((s = cmd_current_session(ctx, 0)) == NULL) {
-		ctx->error(ctx, "can't establish current session");
+	if ((s = cmd_current_session(cmdq, 0)) == NULL) {
+		cmdq_error(cmdq, "can't establish current session");
 		return (-2);
 	}
 
@@ -960,8 +1018,7 @@ cmd_find_index(struct cmd_ctx *ctx, const char *arg, struct session **sp)
 	} else if ((idx = cmd_lookup_index(s, winptr, &ambiguous)) == -1)
 		goto invalid_index;
 
-	if (sessptr != NULL)
-		xfree(sessptr);
+	free(sessptr);
 	return (idx);
 
 no_colon:
@@ -997,29 +1054,26 @@ lookup_session:
 
 no_session:
 	if (ambiguous)
-		ctx->error(ctx, "multiple sessions: %s", arg);
+		cmdq_error(cmdq, "multiple sessions: %s", arg);
 	else
-		ctx->error(ctx, "session not found: %s", arg);
-	if (sessptr != NULL)
-		xfree(sessptr);
+		cmdq_error(cmdq, "session not found: %s", arg);
+	free(sessptr);
 	return (-2);
 
 invalid_index:
 	if (ambiguous)
 		goto not_found;
-	ctx->error(ctx, "invalid index: %s", arg);
+	cmdq_error(cmdq, "invalid index: %s", arg);
 
-	if (sessptr != NULL)
-		xfree(sessptr);
+	free(sessptr);
 	return (-2);
 
 not_found:
 	if (ambiguous)
-		ctx->error(ctx, "multiple windows: %s", arg);
+		cmdq_error(cmdq, "multiple windows: %s", arg);
 	else
-		ctx->error(ctx, "window not found: %s", arg);
-	if (sessptr != NULL)
-		xfree(sessptr);
+		cmdq_error(cmdq, "window not found: %s", arg);
+	free(sessptr);
 	return (-2);
 }
 
@@ -1055,7 +1109,7 @@ cmd_find_index_offset(const char *winptr, struct session *s, int *ambiguous)
  * such as mysession:mywindow.0.
  */
 struct winlink *
-cmd_find_pane(struct cmd_ctx *ctx,
+cmd_find_pane(struct cmd_q *cmdq,
     const char *arg, struct session **sp, struct window_pane **wpp)
 {
 	struct session	*s;
@@ -1065,8 +1119,8 @@ cmd_find_pane(struct cmd_ctx *ctx,
 	u_int		 idx;
 
 	/* Get the current session. */
-	if ((s = cmd_current_session(ctx, 0)) == NULL) {
-		ctx->error(ctx, "can't establish current session");
+	if ((s = cmd_current_session(cmdq, 0)) == NULL) {
+		cmdq_error(cmdq, "can't establish current session");
 		return (NULL);
 	}
 	if (sp != NULL)
@@ -1080,7 +1134,7 @@ cmd_find_pane(struct cmd_ctx *ctx,
 
 	/* Lookup as pane id. */
 	if ((*wpp = cmd_lookup_paneid(arg)) != NULL) {
-		s = cmd_pane_session(ctx, *wpp, &wl);
+		s = cmd_window_session(cmdq, (*wpp)->window, &wl);
 		if (sp != NULL)
 			*sp = s;
 		return (wl);
@@ -1095,7 +1149,7 @@ cmd_find_pane(struct cmd_ctx *ctx,
 	winptr[period - arg] = '\0';
 	if (*winptr == '\0')
 		wl = s->curw;
-	else if ((wl = cmd_find_window(ctx, winptr, sp)) == NULL)
+	else if ((wl = cmd_find_window(cmdq, winptr, sp)) == NULL)
 		goto error;
 
 	/* Find the pane section and look it up. */
@@ -1113,17 +1167,17 @@ cmd_find_pane(struct cmd_ctx *ctx,
 			goto lookup_string;
 	}
 
-	xfree(winptr);
+	free(winptr);
 	return (wl);
 
 lookup_string:
 	/* Try pane string description. */
 	if ((*wpp = window_find_string(wl->window, paneptr)) == NULL) {
-		ctx->error(ctx, "can't find pane: %s", paneptr);
+		cmdq_error(cmdq, "can't find pane: %s", paneptr);
 		goto error;
 	}
 
-	xfree(winptr);
+	free(winptr);
 	return (wl);
 
 no_period:
@@ -1144,12 +1198,12 @@ lookup_window:
 		return (s->curw);
 
 	/* Try as a window and use the active pane. */
-	if ((wl = cmd_find_window(ctx, arg, sp)) != NULL)
+	if ((wl = cmd_find_window(cmdq, arg, sp)) != NULL)
 		*wpp = wl->window->active;
 	return (wl);
 
 error:
-	xfree(winptr);
+	free(winptr);
 	return (NULL);
 }
 
@@ -1174,14 +1228,14 @@ cmd_find_pane_offset(const char *paneptr, struct winlink *wl)
 
 /* Replace the first %% or %idx in template by s. */
 char *
-cmd_template_replace(char *template, const char *s, int idx)
+cmd_template_replace(const char *template, const char *s, int idx)
 {
-	char	 ch;
-	char	*buf, *ptr;
-	int	 replaced;
-	size_t	 len;
+	char		 ch, *buf;
+	const char	*ptr;
+	int		 replaced;
+	size_t		 len;
 
-	if (strstr(template, "%") == NULL)
+	if (strchr(template, '%') == NULL)
 		return (xstrdup(template));
 
 	buf = xmalloc(1);
@@ -1212,35 +1266,3 @@ cmd_template_replace(char *template, const char *s, int idx)
 
 	return (buf);
 }
-
-/* Return the default path for a new pane. */
-const char *
-cmd_get_default_path(struct cmd_ctx *ctx)
-{
-	const char		*cwd;
-	struct session		*s;
-	struct window_pane	*wp;
-	struct environ_entry	*envent;
-
-	if ((s = cmd_current_session(ctx, 0)) == NULL)
-		return (NULL);
-
-	cwd = options_get_string(&s->options, "default-path");
-	if ((cwd[0] == '~' && cwd[1] == '\0') || !strcmp(cwd, "$HOME")) {
-		envent = environ_find(&global_environ, "HOME");
-		if (envent != NULL && *envent->value != '\0')
-			return envent->value;
-		cwd = "";
-	}
-	if (*cwd == '\0') {
-		if (ctx->cmdclient != NULL && ctx->cmdclient->cwd != NULL)
-			return (ctx->cmdclient->cwd);
-		if (ctx->curclient != NULL) {
-			wp = s->curw->window->active;
-			if ((cwd = osdep_get_cwd(wp->pid)) != NULL)
-				return (cwd);
-		}
-		return (s->cwd);
-	}
-	return (cwd);
-}

colour.c

@@ -287,29 +287,3 @@ colour_256to16(u_char c)
 
 	return (table[c]);
 }
-
-/* Convert 256 colour palette to 88. */
-u_char
-colour_256to88(u_char c)
-{
-	static const u_char table[256] = {
-		 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
-		16, 17, 17, 18, 18, 19, 20, 21, 21, 22, 22, 23, 20, 21, 21, 22,
-		22, 23, 24, 25, 25, 26, 26, 27, 24, 25, 25, 26, 26, 27, 28, 29,
-		29, 30, 30, 31, 32, 33, 33, 34, 34, 35, 36, 37, 37, 38, 38, 39,
-		36, 37, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43, 40, 41, 41, 42,
-		42, 43, 44, 45, 45, 46, 46, 47, 32, 33, 33, 34, 34, 35, 36, 37,
-		37, 38, 38, 39, 36, 37, 37, 38, 38, 39, 40, 41, 41, 42, 42, 43,
-		40, 41, 41, 42, 42, 43, 44, 45, 45, 46, 46, 47, 48, 49, 49, 50,
-		50, 51, 52, 53, 53, 54, 54, 55, 52, 53, 53, 54, 54, 55, 56, 57,
-		57, 58, 58, 59, 56, 57, 57, 58, 58, 59, 60, 61, 61, 62, 62, 63,
-		48, 49, 49, 50, 50, 51, 52, 53, 53, 54, 54, 55, 52, 53, 53, 54,
-		54, 55, 56, 57, 57, 58, 58, 59, 56, 57, 57, 58, 58, 59, 60, 61,
-		61, 62, 62, 63, 64, 65, 65, 66, 66, 67, 68, 69, 69, 70, 70, 71,
-		68, 69, 69, 70, 70, 71, 72, 73, 73, 74, 74, 75, 72, 73, 73, 74,
-		74, 75, 76, 77, 77, 78, 78, 79,  0,  0, 80, 80, 80, 81, 81, 81,
-		82, 82, 82, 83, 83, 83, 84, 84, 84, 85, 85, 85, 86, 86, 86, 87
-	};
-
-	return (table[c]);
-}

compat.h

@@ -30,6 +30,10 @@
 #define __packed __attribute__ ((__packed__))
 #endif
 
+#ifndef ECHOPRT
+#define ECHOPRT 0
+#endif
+
 #ifndef HAVE_BSD_TYPES
 typedef uint8_t u_int8_t;
 typedef uint16_t u_int16_t;
@@ -121,6 +125,10 @@ typedef uint64_t u_int64_t;
 #define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
 #endif
 
+#ifndef O_DIRECTORY
+#define O_DIRECTORY 0
+#endif
+
 #ifndef INFTIM
 #define INFTIM -1
 #endif
@@ -152,6 +160,18 @@ typedef uint64_t u_int64_t;
 	} while (0)
 #endif
 
+#ifndef timersub
+#define timersub(tvp, uvp, vvp)                                         \
+	do {                                                            \
+		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
+		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
+		if ((vvp)->tv_usec < 0) {                               \
+			(vvp)->tv_sec--;                                \
+			(vvp)->tv_usec += 1000000;                      \
+		}                                                       \
+	} while (0)
+#endif
+
 #ifndef TTY_NAME_MAX
 #define TTY_NAME_MAX 32
 #endif
@@ -198,6 +218,7 @@ int	 	 daemon(int, int);
 
 #ifndef HAVE_B64_NTOP
 /* b64_ntop.c */
+#undef b64_ntop /* for Cygwin */
 int		 b64_ntop(const char *, size_t, char *, size_t);
 #endif
 
@@ -224,6 +245,17 @@ int		 setenv(const char *, const char *, int);
 int		 unsetenv(const char *);
 #endif
 
+#ifndef HAVE_CFMAKERAW
+/* cfmakeraw.c */
+void		cfmakeraw(struct termios *);
+#endif
+
+#ifndef HAVE_OPENAT
+/* openat.c */
+#define AT_FDCWD -100
+int		openat(int, const char *, int, ...);
+#endif
+
 #ifdef HAVE_GETOPT
 #include <getopt.h>
 #else

compat/asprintf.c

@@ -53,7 +53,7 @@ vasprintf(char **ret, const char *fmt, va_list ap)
 
 	*ret = xmalloc(n + 1);
 	if ((n = vsnprintf(*ret, n + 1, fmt, ap2)) < 0) {
-		xfree(*ret);
+		free(*ret);
 		goto error;
 	}
 

compat/cfmakeraw.c

@@ -1,7 +1,8 @@
 /* $Id$ */
 
 /*
- * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
+ * Copyright (c) 2013 Dagobert Michelsen
+ * Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -16,29 +17,16 @@
  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <sys/types.h>
+#include <string.h>
 
 #include "tmux.h"
 
-/*
- * Start the server and do nothing else.
- */
-
-int	cmd_start_server_exec(struct cmd *, struct cmd_ctx *);
-
-const struct cmd_entry cmd_start_server_entry = {
-	"start-server", "start",
-	"", 0, 0,
-	"",
-	CMD_STARTSERVER,
-	NULL,
-	NULL,
-	cmd_start_server_exec
-};
-
-/* ARGSUSED */
-int
-cmd_start_server_exec(unused struct cmd *self, unused struct cmd_ctx *ctx)
+void
+cfmakeraw(struct termios *tio)
 {
-	return (0);
+	tio->c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
+	tio->c_oflag &= ~OPOST;
+	tio->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
+	tio->c_cflag &= ~(CSIZE|PARENB);
+	tio->c_cflag |= CS8;
 }

compat/fgetln.c

@@ -43,9 +43,7 @@
 #include "tmux.h"
 
 char *
-fgetln(fp, len)
-	FILE *fp;
-	size_t *len;
+fgetln(FILE *fp, size_t *len)
 {
 	static char *buf = NULL;
 	static size_t bufsiz = 0;

compat/forkpty-sunos.c

@@ -21,6 +21,7 @@
 
 #include <fcntl.h>
 #include <stdlib.h>
+#include <strings.h>
 #include <stropts.h>
 #include <unistd.h>
 

compat/getopt.c

@@ -52,10 +52,7 @@ char	*BSDoptarg;		/* argument associated with option */
  *	Parse argc/argv argument vector.
  */
 int
-BSDgetopt(nargc, nargv, ostr)
-	int nargc;
-	char * const *nargv;
-	const char *ostr;
+BSDgetopt(int nargc, char *const *nargv, const char *ostr)
 {
 	static char *place = EMSG;		/* option letter processing */
 	char *oli;				/* option letter list index */
@@ -70,6 +67,8 @@ BSDgetopt(nargc, nargv, ostr)
 			return (-1);
 		}
 		if (place[1] && *++place == '-') {	/* found "--" */
+			if (place[1])
+				return (BADCH);
 			++BSDoptind;
 			place = EMSG;
 			return (-1);