Regarding debugger.txt (which was Spotted by @Hettomei):
The third section was empty, and the second section is very outdated.
Nvim doesn't have things like Balloon Evalutation and Sun Visual
workshop integration, so just remove the section.
Regarding everything else:
- term.[ch] and term_defs.h don't exist anymore, so remove refs to them
- Add ttybuiltin to vim_diff.txt. It should have been done before, but
vim_diff.txt didn't exist when ttybuiltin was removed (done in
3baba1e7bc6698e6bc9f1d37fce88b30d6274bc9,)
Helped-by: Justin M. Keyes <justinkz@gmail.com>
Problem: Segfault with wide screen and error in 'rulerformat'. (Ingo Karkat)
Solution: Check there is enough space. (Christian Brabandt)
https://github.com/vim/vim/commit/v7-4-562
Problem: Conceal does not work properly with 'linebreak'. (cs86661)
Solution: Save and restore boguscols. (Christian Brabandt)
https://github.com/vim/vim/commit/v7-4-587
We already use wrappers for allocation, the new `xfree` function is the
equivalent for deallocation and provides a way to fully replace the malloc
implementation used by Neovim.
This commit integrates libvterm with Neovim and implements a terminal emulator
with nvim buffers as the display mechanism. Terminal buffers can be created
using any of the following methods:
- Opening a file with name following the "term://[${cwd}//[${pid}:]]${cmd}"
URI pattern where:
- cwd is the working directory of the process
- pid is the process id. This is just for use in session files where a pid
would have been assigned to the saved buffer title.
- cmd is the command to run
- Invoking the `:terminal` ex command
- Invoking the `termopen` function which returns a job id for automating the
terminal window.
Some extra changes were also implemented to adapt with terminal buffers. Here's
an overview:
- The `main` function now sets a BufReadCmd autocmd to intercept the term:// URI
and spawn the terminal buffer instead of reading the file.
- terminal buffers behave as if the following local buffer options were set:
- `nomodifiable`
- `swapfile`
- `undolevels=-1`
- `bufhidden=hide`
- All commands that delete buffers(`:bun`, `:bd` and `:bw`) behave the same for
terminal buffers, but only work when bang is passed(eg: `:bwipeout!`)
- A new "terminal" mode was added. A consequence is that a new set of mapping
commands were implemented with the "t" prefix(tmap, tunmap, tnoremap...)
- The `edit` function(which enters insert mode) will actually enter terminal
mode if the current buffer is a terminal
- The `put` operator was adapted to send data to the terminal instead of
modifying the buffer directly.
- A window being resized will also trigger a terminal resize if the window
displays the terminal.
Switching cursor off is only necessary in two occasions:
- When redrawing to avoid terminal flickering
- When the editor is busy
The first can now be handled by the TUI, so most calls to ui_cursor_off can be
removed from the core.
So, before this commit it was only necessary to switch the cursor off to notify
the user that nvim was running some long operation. Now the cursor_{on,off}
functions have been replaced by busy_{stop,start} which can be handled in a
UI-specific way(turning the cursor off or showing a busy indicator, for
example).
To make things even more simpler, nvim is always busy except when waiting for
user input or other asynchronous events: It automatically switches to a non-busy
state when the event loop is about to be entered for more than 100 milliseconds.
`ui_busy_start` can be called when its not desired to change the busy state in
the event loop (As its now done by functions that perform blocking shell
invocations).
Problems : Assigned value is garbage or undefined @ 5363.
Result of operation is garbage or undefined @ 5356.
Result of operation is garbage or undefined @ 5320.
Result of operation is garbage or undefined @ 5192.
Diagnostic : False positives / Multithreading issues.
Rationale : Suggested error paths contain incoherent values for
has_mbyte, enc_utf8, and enc_dbcs, which should always hold
the relationship has_mbyte = enc_utf8 || enc_dbcs, with
enc_utf8 and enc_dbcs being mutually exclusive.
Asserting on the globals, though, fails, because checker
believes they could be modified by other threads in
between.
Resolution : Make local copy of globals and assert relationship on them.
- Removed term.c, term.h and term_defs.h
- Tests for T_* values were removed. screen.c was simplified as a
consequence(the best strategy for drawing is implemented in the UI layer)
- Redraw functions now call ui.c functions directly. Updates are flushed with
`ui_flush()`
- Removed all termcap options(they now return empty strings for compatibility)
- &term/&ttybuiltin options return a constant value(nvim)
- &t_Co is still available, but it mirrors t_colors directly
- Remove cursor tracking from screen.c and the `screen_start` function. Now the
UI is expected to maintain cursor state across any call, and reset it when
resized.
- Remove unused code
Problem : Negative array index read @ 5674.
Diagnostic : False positive.
Rationale : Problem occurs if for loop does not find any match, which
implies shl->lnum == 0, and then we enter the
`if (shl->lnum == lnum)` branch, which implies lnum == 0 as
well. That's not possible, as function should not be called
with lnum == 0.
Resolution : Change conditions `shl->lnum == lnum` into `bot != -1`.
- Remove abstract_ui global, now it is always active
- Remove some terminal handling code
- Remove unused functions
- Remove HAVE_TGETENT/TERMINFO/TERMIOS/IOCTL #ifdefs
- Remove tgetent/terminfo from version.c
- Remove curses/terminfo dependencies
- Only start/stop termcap when starting/exiting the program
- msg_use_printf will return true if there are no attached UIs(
messages will be written to stdout)
- Remove `ex_winpos`(implement `:winpos` with `ex_ni`)
refs #1045#1051
This was enabled by default a while ago (#1051), and has apparently not
created any issues. The amount of actual code related to it is tiny, so
it has been removed.
If you Google for this phrase found in the Vim documentation you'll find
almost exclusively hits from the Vim documentation. I think changing
"halfway a line" to "halfway through a line" makes more sense.
There seems to be an pervasive odd use of the word 'halfway' in the
original docs which I'm updating everywhere.
- Set 't_Co' to 256 at startup. The value can be changed by the user for
compatibility with terminals that are less capable.
- `has('gui_running')` will return 1 if at least one rgb UI is attached.
Even though these changes are hacky, they are necessary to make the transition
to the new UI architecture smoother.
This is how Nvim behaves when the "abstract_ui" termcap is activated:
- No data is written/read to stdout/stdin by default.
- Instead of sending data to stdout, ui_write will parse the termcap codes
and invoke dispatch functions in the ui.c module.
- The dispatch functions will forward the calls to all attached UI
instances(each UI instance is an implementation of the UI layer and is
registered with ui_attach).
- Like with the "builtin_gui" termcap, "abstract_ui" does not contain any key
sequences. Instead, vim key strings(<cr>, <esc>, etc) are parsed directly by
input_enqueue and the translated strings are pushed to the input buffer.
With this new input model, its not possible to send mouse events yet. Thats
because mouse sequence parsing happens in term.c/check_termcodes which must
return early when "abstract_ui" is activated.
Problems : Null pointer argument in call to memory copy function
@ 6465.
Null pointer argument in call to memory copy function
@ 6475.
Diagnostic : Multithreading issues.
Rationale : Problem occurs if globals `enc_utf8` and `enc_dbcs` are
modified while function is executing.
Resolution : Use local copy of globals.
Problem: Dead assignment @ 7711.
http://neovim.org/doc/reports/clang/report-835eb6.html#EndPath
Diagnostic: Harmless issue.
Rationale : `scol` is only used within `FOR_ALL_TABS` body, which
assigns another value to `scol` at the beginning of each
iteration. If `FOR_ALL_TABS` body would not execute (no
tabs) nothing harmful would happen, as code following
`FOR_ALL_TABS` doesn't use `scol`.
Resolution: Remove.
Problem: Dead assigment.
http://neovim.org/doc/reports/clang/report-7362ba.html#EndPath
Diagnostic: Harmless issue.
Rationale : `boguscols` is in fact unread by downstream code.
Resolution: Comment out. This is preferred here over just removing the
line because involved logic is complex, and future readers
of this code could find this extra knowledge useful to
understand what the code is doing.
Problem: Dead initialization @ 3477.
http://neovim.org/doc/reports/clang/report-94b736.html#EndPath
Diagnostic: Harmless issue.
Rationale : `len` is assigned a new value just some lines below. So,
this just seems something due to old-style variable
declarations.
Resolution: We could just remove initialization, but prefer moving
declaration down to point of initialization.
Problem: When using conceal with linebreak some text is not displayed
correctly. (Grüner Gimpel)
Solution: Check for conceal mode when using linebreak. (Christian Brabandt)
https://code.google.com/p/vim/source/detail?r=v7-4-422
