Problem: autocommands can cause various problems in terminal mode, which can
lead to crashes, for example.
Solution: fix found issues. Move some checks to terminal_check and guard against
autocommands messing with things. Trigger TermEnter/Leave after terminal mode
has changed/restored most state. Wipeout the correct buffer if TermLeave
switches buffers and fix a UAF if it or WinScrolled/Resized frees the terminal
prematurely.
These changes also allow us to remove the buffer restrictions on TextChangedT;
they were inadequate in stopping some issues, and WinScrolled/Resized was
lacking them anyway.
Problem: when creating a new tabpage with a terminal window, terminal size is
not updated if there is no statusline.
Solution: do not rely on last_status to implicitly call terminal_check_size as a
side effect of making room for a statusline; call it directly.
Problem: topline of a focused terminal window may not tail to terminal output if
events scroll the window.
Solution: set the topline in terminal_check_cursor.
Problem: missing redraws when restoring saved cursorline/column, plus missing
statusline and mode redraws when not updating the screen in terminal mode.
Solution: schedule the redraws in a similar manner to other modes and remove
some now unnecessary redrawing logic. Redraw if cursorline-related options
change from entering terminal mode. This fixes test failures in later commits.
WTF: TextChangedT triggers based on must_redraw, which is... fun...? Try to
preserve its behaviour as much as we can for now.
Problem: in terminal mode, adjust_topline moves curwin's cursor to the last row
so set_topline tails the non-scrollback area. This may result in the observed
cursor position remaining tailed in events within the focused terminal, rather
than reflecting the actual cursor position.
Solution: use the focused terminal's actual cursor position immediately, rather
than relying on the next terminal_check_cursor call in terminal_check to set it.
Note: Maybe also possible for terminal mode cursor position to be stale
(reporting the normal mode position) when switching buffers in events to another
terminal until the next terminal_check call? (or until refresh_terminal is
called for it) Maybe not worth fixing that, though.
**Problem:**
`vim.filetype.match({ filename = 'a.sh' })` returns `nil` because
an invalid buffer ID is passed to `vim.api.nvim_buf_get_lines()`.
For filetypes like `csh`, `txt`, or any other extensions that call
`_getlines()` or `_getline()` to detect their filetypes, the same
issue occurs.
When only the `filename` argument is passed, an error is raised
inside a `pcall()` that wraps the filetype detection function,
causing it to return no value without showing any error message.
**Solution:**
Validate the `bufnr` value in `_getlines()` and `_getline()`.
(cherry picked from commit 095b9f98f3)
Problem: Wrong row in TermRequest with full scrollback.
Solution: Subtract by the number of lines deleted from scrollback.
(cherry picked from commit 67832710a5)
Problem:
If a client doesn't have a config then an error may be thrown.
Probably caused by: 2f78ff816b
Lua callback: …/lsp.lua:442: attempt to index local 'config' (a nil value)
stack traceback:
…/lsp.lua:442: in function 'can_start'
…/lsp.lua:479: in function 'lsp_enable_callback'
…/lsp.lua:566: in function <…/lsp.lua:565>
Solution:
Not all clients necessarily have configs.
- Handle `config=nil` in `can_start`.
- If user "enables" an invalid name that happens to match a *client*
name, don't auto-detach the client.
(cherry picked from commit bf4710d8c3)
backport #36071
* fix(lsp): type of root_dir should be annotated with string|fun|nil
* feat(lsp): support root_dir as function in _get_workspace_folders
* feat(lsp): let checkhealth support root_dir() function
Examples:
vim.lsp: Active Clients ~
- lua_ls (id: 1)
- Version: <Unknown>
- Root directories:
~/foo/bar
~/dev/neovim
Co-authored-by: atusy <30277794+atusy@users.noreply.github.com>
Problem: :fclose may crash Nvim if autocommands close floats prematurely.
Alternatively, :fclose may call win_close for windows not in curtab if
autocommands change curtab or move windows between tab pages via
nvim_win_set_config (may not crash, but is wrong).
Solution: check win_valid before calling win_close.
(cherry picked from commit 3ccba4cdff)
Backports #36134.
Problem
Similar to https://github.com/neovim/neovim/pull/33257, but for the date
component. When timezone is behind UTC the epoch date of individual
components mismatch causing the test to fail.
Solution
The `epoch` variable is created using `os.date` with a `!`, which means
format the date in UTC instead of local timezone:
https://www.lua.org/manual/5.1/manual.html#pdf-os.date.
Since the individual components like year, month, and day are expected
to match `epoch` they should all be created using a `!` as well.
(cherry picked from commit f0b9232ad8)
Problem: Window may have wrong height if resized from another tabpage.
Solution: Improve check for whether a tabline has been added (zeertzjq).
fixes: vim/vim#18518closes: vim/vim#18519bd3b958027
(cherry picked from commit 28355050a8)
Problem: after #35601, nvim_open_win incorrectly attempts to set the size of a
split window to 0 if it wasn't specified.
Solution: only attempt to set the size again if it was actually specified. This has the effect of defaulting to half the size of the parent window (or it may be equalized with other windows to make room), like before.
Fix#36080
(cherry picked from commit d7472c0617)
Problem: 'cursorlineopt' "screenline" isn't redrawn when moving cursor
and then using line("w0") and :retab that does nothing.
Solution: Call redraw_for_cursorcolumn() when setting a valid w_virtcol
(zeertzjq).
closes: vim/vim#18506a084914361
(cherry picked from commit ba47cb7eda)
Problem: vertical separator of 'winfixwidth' windows may remain if they
become right-most windows from closing windows to the right.
Solution: Don't implicitly rely on frame_new_width to fix vseps, as the
call may be skipped for 'winfixwidth' windows to preserve
their width; do it explicitly in winframe_remove (Sean Dewar).
Note that I prefer win_new_width here over setting w_width directly, which
would've previously been done by win_split_ins after frame_add_vsep, as this
wasn't true for winframe_remove.
Though the equivalent issue of bottom 'winfixheight' windows leaving stray
statuslines with &ls=0 doesn't seem to exist, test it anyway.
closes: vim/vim#18481620c655677
Nvim: calling win_new_width over setting w_width directly is especially
important in making sure stuff like w_view_width is correct here.
Co-authored-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
(cherry picked from commit 7923e847ca)
Problem: :trust is executed even when inside false condition.
Solution: Make skip_cmd() return true for CMD_trust, as ex_trust() does
not handle eap->skip itself.
(cherry picked from commit 2f35221774)
Problem: requested window size passed to nvim_open_win for splits may be ignored
by win_split_ins if it decides to forcefully equalize window sizes instead (e.g:
in an attempt to make room for the new window).
Solution: try to set the size again if it differs from what was requested.
Co-authored-by: Sean Dewar <6256228+seandewar@users.noreply.github.com>
Use only a single clear() call in some test/functional/vimscript/ test
files whose test cases have very little side effect.
A downside of using a single clear() is that if a crash happens in one
test case, all following test cases in the same file will also fail, but
these functionalities and tests don't change very often.
Problem: Wrong display with 'smoothscroll' and long wrapped virtual
text at EOL.
Solution: Handle w_skipcol inside long wrapped virtual text at EOL
(zeertzjq).
closes: vim/vim#18408d9318acc02
Problem:
If there are 2 language servers with different trigger chars (`-` and
`>`), and a keymap inputs both simultaneously (`->`), then `>` doesn't
trigger. We get completion items from server1 only.
This happens because the `completion_timer` for the `-` trigger is still
pending.
Solution:
If the next character arrived enough quickly (< 25 ms), replace the
existing deferred autotrigger with a new one that matches this later
character.
(cherry picked from commit e69b81ad94)
Overriding vim.lsp.handlers['textDocument/formatting'] doesn't work here
because fake_lsp_server_setup() uses a table with __index to specify
client handlers, which takes priority over vim.lsp.handlers[], and as a
result the overridden handler is never called, and the test ends before
the vim.wait() even finishes.
Instead, set a global variable from the handler that is actually reached
(by vim.rpcrequest() from client handler), and avoid stopping the event
loop too early.
(cherry picked from commit 8d5476691c)
Problem:
`gx` does not work on tags in help buffers to open the documentation of that tag in the browser.
Solution:
Get the `optionlink`, `taglink` and `tag` TS nodes and set extmark "url" property.
`gx` then discovers the extmark "url" and opens it.
Co-authored-by: Yochem van Rosmalen <git@yochem.nl>
This fixes the following warning in tests with ASAN or TSAN:
-------- Running tests from test/functional/lua/watch_spec.lua
RUN T4253 vim._watch watch() ignores nonexistent paths: 29.00 ms OK
nvim took 2006 milliseconds to exit after last test
This indicates a likely problem with the test even if it passed!
Problem:
LSP logs show misleading "cannot start" messages when editing a filetype
NOT listed in the `config.filetypes` field.
[ERROR][2025-09-13 18:55:56] …/runtime//lua/vim/lsp/log.lua:151
"cannot start cssls due to config error: …/runtime//lua/vim/lsp.lua:423:
cmd: expected expected function or table with executable command,
got table: 0x0104701b18. Info: vscode-css-language-server is not executable"
Solution:
- `can_start`: check `config.filetypes` before checking the rest of the
config.
(cherry picked from commit 2f78ff816b)
Problem: after #34287 nvim_win_set_config no longer errors when attempting to
split from a floating window only if "win" is 0.
Solution: fix the regression, reduce the scope of "parent" and similar checks to
only where it's currently used and add test coverage for the errors.
(cherry picked from commit da39966a3a)
Problem: a horizontal separator may be added to a window that doesn't need one
if there is no room when moving a different window.
Solution: only restore a hsep in winframe_restore when the global statusline is
enabled.
(cherry picked from commit bf5f7c1591)
Problem:
with `foldmethod=expr foldexpr=v:lua.vim.treesitter.foldexpr()
foldminlines=0`, deleting lines at the end of the buffer always
reports an invalid top error, because the top value (i.e. the
start line number of the deletion) is always 1 greater than
the total line number of the modified buffer.
Solution:
remove the ml_line_count validation
(cherry picked from commit d73cfefed5)
