vim.lsp.start_client() may fail (for example if the `cmd` is not
executable). It produces a nice error notification in this case. Passing
the `nil` value returned from an erroneous `vim.lsp.start_client()` call
into `vim.lsp.buf_attach_client()` causes a meaty param validate
exception message. Avoid this.
Problem: Another failing timer test.
Solution: Assert that timers are finished by the end of the test. Rename
test functions to make them easier to find.
9a2fddcf04
Use test_garbagecollect_now() in Test_timer_retain_partial() like Vim.
Problem: When :edit reuses the current buffer the alternate file is set to
the same buffer.
Solution: Only set the alternate file when not reusing the buffer.
(closesvim/vim#8783)
b8bd2e6eba
Cherry-pick Test_cmdline_expand_special() from patches 8.2.{0243,2873}.
Move Test_cmd_backtick() to the right place.
Issuing a server request triggers `changetracking.flush` so as to
make sure we're not operating on a stale state. This immediately
triggers notification of any pending changes (as a result of debouncing)
to the server. However, this happens in addition to the notification
that is waiting on the debounce delay. Because we `nil`
`buf_state.pending_change` when it is called, the fix is to
also check that this is non-`nil` when it is called and exit if it is,
as this being `nil` would mean that it originates from a pending change
that has already been flushed out.
Problem: Arabic support excludes Farsi.
Solution: Add Farsi support to the Arabic support. (Ali Gholami Rudi,
Ameretat Reith)
dc4fa190e7
Omit Test_shape_final_to_medial(): removed in later patches.
Problem: Spellfile functionality not fully tested.
Solution: Add tests for SFX with removal of characters, spelling
suggestions with NOBREAK and others. (Dominique Pellé,
closesvim/vim#8293)
bb162367ac
Problem: Spellfile functionality not fully tested.
Solution: Add tests for CIRCUMFIX, NOBREAK and others. (Dominique Pellé,
closesvim/vim#8283)
5a6cfb3ff2
Reorder test_spellfile.vim to match upstream.
Problem: Cmdexpand.c insufficiently tested.
Solution: Add more tests. (Yegappan Lakshmanan, closesvim/vim#5789)
24ebd83e03
Map Q to gQ before every test since a test uses :mapclear.
Problem: Ex_getln.c code not covered by tests.
Solution: Add a few more tests. (Yegappan Lakshmanan, closesvim/vim#5702)
578fe947e3
Cherry-pick Test_Ex_global() from patch 8.2.0293.
Test_rightleftcmd() fails if incsearch is enabled, so disable it.
Problem
-------
In #19040, I reported two things that started happening somewhen in the
last three months when using neovim in hterm (the Chrome Secure Shell
terminal):
1. Under certain circumstances, the window title (set by nvim
[i0]) would appear over the line I was typing, corrupting the screen.
2. If I changed my $TERM from xterm-256color to the new hterm-256color
(available since ncurses >=20210320), the window title corruption
was gone, but pane scrolling was broken.
Both problems are due to changes in the termcap files, their source of
truth being the ncurses project. See "Timeline of ncurses changes" below
for details.
Cause: title corruption
-----------------------
The title corruption when using hterm + TERM=xterm-256color can be
explained by event #4 (ncurses 2022-03-12) in the ncurses timeline:
The xterm-256color termcap file gained status line termcodes in ncurses
2022-03-12. These termcodes are used by Neovim to set the title when.
hterm does not have a status line. Due to ncurses versions earlier than
2022-03-12 missing the xterm status line capability, Neovim manually
fixed up [t0] the terminfo file if $TERM was xterm-256color. So if
before Neovim manually added fsl/tsl capabilties, and after they were
in the termcap file, why did hterm suddenly start getting corruption?
The answer is that the termcodes for these capabilties are different
when Neovim fixes them up, versus the one in the new termcap database:
fsl=\E[0$} // from xterm-256color
tsl=\E[2$~\E[1$}\E[%i%p1%d` // from xterm-256color
fsl=\x07 // patched by Neovim
tsl=\x1b]0; // patched by Neovim
hterm ignores the latter, but corrupts the screen with the former.
Solution: Make hterm users set hterm-256color, which lacks the new
fsl/tsl codes. Also, to reduce superfluous work, stop patching in this
capability when hterm is detected (even if hterm would ignore the
patched version).
Cause: pane corruption
----------------------
The pane corruption when using hterm + TERM=hterm-256color, but NOT when
using hterm + TERM=xterm-256color can be explained by:
- Neovim uses DECSLRM when available [p1] for performant scrolling.
- Both the hterm-256color and xterm-256color termcap databases
advertise support for DECSLRM (ncurses timeline #1, #2 and #3).
- hterm does not support DESCLRM [p2] (note: it does support DESCTBM for
top/bottom scrolling, but it's broken [p3] and not used by Neovim)
- xterm-alikes that are not real xterm generally don't support DECSLRM
either, so Neovim patches it out [p4].
When using hterm-256color, hterm is no longer considered an xterm-alike
by Neovim. As a result, DECSLRM is not cleared. hterm does not support
it, so corruption ensues.
This is a problem with the hterm-256color termcap file, but we're stuck
with it so the best we can do is patch over it.
Timeline of ncurses changes
---------------------------
1. 2019-05-19: Part of the DECSLRM capability (smglr AKA set_lr_margin)
added to vt420+lrmm, which xterm-256color inherits [n1]
2. 2021-03-20: hterm-256color added, inheriting xterm-256colors. [n2]
3. 2021-09-25: The *parm versions of smglr (AKA set_lr_margin) were
added to vt420+lrmm [n3]. Namely:
1. smglp AKA set_left_margin_parm, and
2. smgrp AKA set_right_margin_parm
4. 2022-03-12: (new) codes for fsl, bsl and tsl added to xterm (add
dec+sl to xterm-new, per patch #371 -TD) [n4]
Fixes#19040.
[i0]: 3a4fa22bad/src/nvim/tui/tui.c (L1377)
[t0]: 3a4fa22bad/src/nvim/tui/tui.c (L1728),L1729
[p1]: 3a4fa22bad/src/nvim/tui/tui.c (L1196)
[p2]: https://bugs.chromium.org/p/chromium/issues/detail?id=1175065&q=component%3APlatform%3EApps%3EDefault%3EHterm
[p3]: https://bugs.chromium.org/p/chromium/issues/detail?id=1298796&q=component%3APlatform%3EApps%3EDefault%3EHterm
[p4]: 3a4fa22bad/src/nvim/tui/tui.c (L1740-L1752)
[n1]: https://github.com/mirror/ncurses/commit/8f6d94b8d6211a2323caef53fa4c96c475ec9a6#diff-01544c577762d3308a1d232aa7afc79acf64b9a5057f88a004df82fda89549b7R2742
[n2]: c2650100f8 (diff-01544c577762d3308a1d232aa7afc79acf64b9a5057f88a004df82fda89549b7R5907)
[n3]: f6b436c4fb (diff-01544c577762d3308a1d232aa7afc79acf64b9a5057f88a004df82fda89549b7R2842)
[n4]: 8bf8c836fe (diff-01544c577762d3308a1d232aa7afc79acf64b9a5057f88a004df82fda89549b7R4828)
Signed-off-by: Nicolas Hillegeer <nicolas@hillegeer.com>
