Remove the -I part of show-messages which isn't really that useful; the

server start time can now be accessed with a new start_time format (use:
tmux display -p '#{t:start_time}')

cmd-show-messages.c

@@ -33,8 +33,8 @@ enum cmd_retval	 cmd_show_messages_exec(struct cmd *, struct cmd_q *);
 
 const struct cmd_entry cmd_show_messages_entry = {
 	"show-messages", "showmsgs",
-	"IJTt:", 0, 0,
-	"[-IJT] " CMD_TARGET_CLIENT_USAGE,
+	"JTt:", 0, 0,
+	"[-JT] " CMD_TARGET_CLIENT_USAGE,
 	0,
 	cmd_show_messages_exec
 };
@@ -47,27 +47,9 @@ const struct cmd_entry cmd_server_info_entry = {
 	cmd_show_messages_exec
 };
 
-int	cmd_show_messages_server(struct cmd_q *);
 int	cmd_show_messages_terminals(struct cmd_q *, int);
 int	cmd_show_messages_jobs(struct cmd_q *, int);
 
-int
-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, "protocol version %d", PROTOCOL_VERSION);
-	cmdq_print(cmdq, "libevent %s (%s)", event_get_version(),
-	    event_get_method());
-
-	return (1);
-}
-
 int
 cmd_show_messages_terminals(struct cmd_q *cmdq, int blank)
 {
@@ -118,10 +100,6 @@ cmd_show_messages_exec(struct cmd *self, struct cmd_q *cmdq)
 	int			 done, blank;
 
 	done = blank = 0;
-	if (args_has(args, 'I') || self->entry == &cmd_server_info_entry) {
-		blank = cmd_show_messages_server(cmdq);
-		done = 1;
-	}
 	if (args_has(args, 'T') || self->entry == &cmd_server_info_entry) {
 		blank = cmd_show_messages_terminals(cmdq, blank);
 		done = 1;

format.c

@@ -488,6 +488,8 @@ format_create_flags(int flags)
 	format_add_cb(ft, "host", format_cb_host);
 	format_add_cb(ft, "host_short", format_cb_host_short);
 	format_add_cb(ft, "pid", format_cb_pid);
+	format_add(ft, "socket_path", "%s", socket_path);
+	format_add_tv(ft, "start_time", &start_time);
 
 	return (ft);
 }

server.c

@@ -187,7 +187,7 @@ server_start(struct event_base *base, int lockfd, char *lockfile)
 	mode_key_init_trees();
 	key_bindings_init();
 
-	start_time = time(NULL);
+	gettimeofday(&start_time, NULL);
 
 	server_fd = server_create_socket();
 	if (server_fd == -1)

tmux.1

@@ -740,7 +740,7 @@ Kill the
 .Nm
 server and clients and destroy all sessions.
 .It Xo Ic kill-session
-.Op Fl a
+.Op Fl aC
 .Op Fl t Ar target-session
 .Xc
 Destroy the given session, closing any windows linked to it and no other
@@ -748,6 +748,10 @@ sessions, and detaching all clients attached to it.
 If
 .Fl a
 is given, all sessions but the specified one is killed.
+The
+.Fl C
+clears alerts (bell, activity, or silence) in all windows linked to the
+session.
 .It Xo Ic list-clients
 .Op Fl F Ar format
 .Op Fl t Ar target-session
@@ -887,7 +891,7 @@ is specified, only update the client's status bar.
 Rename the session to
 .Ar new-name .
 .It Xo Ic show-messages
-.Op Fl IJT
+.Op Fl JT
 .Op Fl t Ar target-client
 .Xc
 .D1 (alias: Ic showmsgs )
@@ -900,11 +904,10 @@ With
 .Fl t ,
 display the log for
 .Ar target-client .
-.Fl I ,
 .Fl J
 and
 .Fl T
-show debugging information about the running server, jobs and terminals.
+show debugging information about jobs and terminals.
 .It Ic source-file Ar path
 .D1 (alias: Ic source )
 Execute commands from
@@ -3410,6 +3413,7 @@ The following variables are available, where appropriate:
 .It Li "session_name" Ta "#S" Ta "Name of session"
 .It Li "session_width" Ta "" Ta "Width of session"
 .It Li "session_windows" Ta "" Ta "Number of windows in session"
+.It Li "start_time" Ta "" Ta "Server start time"
 .It Li "window_activity" Ta "" Ta "Integer time of window last activity"
 .It Li "window_active" Ta "" Ta "1 if window active"
 .It Li "window_bell_flag" Ta "" Ta "1 if window has bell"

tmux.c

@@ -44,7 +44,7 @@ struct options	*global_w_options;	/* window options */
 struct environ	*global_environ;
 
 char		*shell_cmd;
-time_t		 start_time;
+struct timeval	 start_time;
 char		 socket_path[PATH_MAX];
 
 __dead void	 usage(void);

tmux.h

@@ -1431,9 +1431,9 @@ extern struct options *global_options;
 extern struct options *global_s_options;
 extern struct options *global_w_options;
 extern struct environ *global_environ;
-extern char	*shell_cmd;
-extern time_t	 start_time;
-extern char	 socket_path[PATH_MAX];
+extern char		*shell_cmd;
+extern struct timeval	 start_time;
+extern char		 socket_path[PATH_MAX];
 const char	*getshell(void);
 int		 checkshell(const char *);
 int		 areshell(const char *);