Problem: tests: Test_cd_from_non_existing_dir() fails on Solaris
Solution: Skip the test on Solaris (Vladimír Marek).
Test_cd_from_non_existing_dir() depends on deleting the current working
directory. Solaris does not allow that, so skip the test there.
closes: vim/vim#20563b464c36bf9
Co-authored-by: Vladimír Marek <vlmarek13@gmail.com>
Problem: tests: Test_recover_corrupted_swap_file() cannot handle
symlinks
Solution: Use writefile(readblob()) instead (Vladimír Marek)
Test_recover_corrupted_swap_file1() copies prebuilt corrupt swap samples
before recovering them. In an out-of-source-tree build those sample
files may be symlinks into the source tree. filecopy() preserves
symlinks, so the copied target may remain a symlink. Recovery opens
swap files with O_NOFOLLOW, so that copied symlink cannot be opened.
Read the sample as a blob and write it back so the recovery target is a
real swap file.
closes: vim/vim#2056188cbd00312
Co-authored-by: Vladimír Marek <vlmarek13@gmail.com>
Problem: On MS-Windows it is not possible to switch to a buffer by name
with ":b" (including via command-line completion) when the
buffer name contains '%'.
Solution: Do not escape '%' and '#' for the ":buffer" command on
MS-Windows. Since ":buffer" has no EX_XFILE these are not
expanded, and escaping them as "\%"/"\#" makes buffer name
matching fail when '%'/'#' is in 'isfname' (the backslash is
treated as a path separator).
fixes: vim/vim#20529closes: vim/vim#205481a96e07bf6
Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Problem: Crash with TextPut autocmd when pasting in normal mode in a
terminal buffer.
Solution: Skip the TextPut autocmds when reg and insert are both NULL
and regname is not '.' (Foxe Chen).
closes: vim/vim#204072e7833bde9
Co-authored-by: Foxe Chen <chen.foxe@gmail.com>
Problem: [security]: s:NetrwLocalRmFile() escapes only the backslash in
the file name before passing it to :execute, so a name
containing "|" injects arbitrary Ex commands when the file is
deleted (cipher-creator)
Solution: Use fnameescape() to correctly escape the file name
(Yasuhiro Matsumoto).
Github Security Advisory:
https://github.com/vim/vim/security/advisories/GHSA-vhh8-v6wx-hjjh
Supported by AI
55bc757a5d
Co-authored-by: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Problem: [security]: a crafted spell file with a self-referential
BY_INDEX node in the prefix tree can drive dump_prefixes()
past the end of its MAXWLEN-sized depth arrays on :spelldump
(cipher-creator)
Solution: only descend while depth < MAXWLEN - 1, as the sibling trie
walkers already do (Yasuhiro Matsumoto)
Github Security Advisory:
https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879h
Supported by AI
8325b193bb
Co-authored-by: Yasuhiro Matsumoto <mattn.jp@gmail.com>
Problem: With 'longest', 'smartcase' is ignored when filtering matches:
"inp" offers only "InputEvent", and an uppercase pattern gives
different results for CTRL-N and CTRL-P.
Solution: 'longest' rewrites the leader with the common prefix, picking
up uppercase the user never typed. Judge case from the typed
text instead, and match the auto-inserted part of the leader
case-insensitively so CTRL-N and CTRL-P give the same result.
(glepnir)
related: neovim/neovim#40259
closes: vim/vim#2053350fe45aca7
Co-authored-by: glepnir <glephunter@gmail.com>
Problem:
Can't open swapfile when using a device path starting with `//?/`,
because `?` is a reserved char on Widnows.
Solution:
For device UNC paths, replace `//?/UNC/` and `//./UNC/` with `//`.
For other device paths, just strip their prefix (i.e. `//?/`, `//./`).
This aligns swapfile naming for device paths with regular UNC and DOS
paths.
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
Problem:
A colored (guisp) underline showing through a 'winblend' float
lost its special color and followed the foreground instead.
Solution:
In the blend-through case, blend the underline's special color
only when the cell below sets sp explicitly; otherwise clear it.
Problem: [security]: a crafted spell file can drive tree_count_words()
past the end of its MAXWLEN-sized depth arrays; the descent
loop has no depth bound.
Solution: only descend while depth < MAXWLEN - 1, as the sibling trie
walkers already do; apply the same guard to sug_filltree().
Github Security Advisory:
https://github.com/vim/vim/security/advisories/GHSA-wgh4-64f7-q3jq
Supported by AI.
a80874d9b8
Co-authored-by: Christian Brabandt <cb@256bit.org>
Problem:
an empty `{ isIncomplete = true, items = {} }` ends completion
instead of requerying.
Solution:
keep isIncomplete on empty lists and retrigger on keypress while incomplete.
Reset on <C-e> so it doesn't immediately re-query.
Problem: a font set via nvim_set_hl is lost or corrupted with font-only groups,
attribute combining, and update=true, and is dropped on any attr-table rebuild.
nvim__inspect_cell also frees the font name while a returned dict still borrows it.
Solution: register font-only groups, carry font through hl_combine_attr, inherit
it on update, and persist sg_font so a rebuild can restore it. Keep interned font
names across a rebuild instead of clearing them. Add the missing font field to
get_hl_info.
Co-authored-by: Ryan Patterson <cgamesplay@cgamesplay.com>
Problem: vim.diagnostic.Opts.VirtualLines.current_line and
vim.diagnostic.Opts.VirtualText.current_line cause redraw
on every CursorMoved event that makes the text jump
uncomfortably with rapid cursor movement.
Solution: `current_line` state is applied only on CursorHold,
while still being cleared on CursorMoved making it so that
until the cursor has stopped on a line, its diagnostic
looks like cursor is not on the line preventing flicker.
Problem: The refactor to use Capability left around some cruft and
semi-broken configuration for debounce.
Solution: Clean up now-unnecessary helper methods and simplify
deprecated ones to pass through to the non-deprecated ones. `debounce`
now defaults to 200 for all buffers but is overridable via the
deprecated start() method, which continues to take the max value
specified for any client attached to the buffer.
If we wish to expose changing the debounce in a non-deprecated way, we
will need to consider a "configuration" function, or even a bespoke
method to set the debounce time on the main metaclass (or provide
options to override for a particular buffer). General configuration of
specific LSP features is an as-of-yet unsolved problem.
Problem:
On Windows and macOS, entries in `oldfiles` may differ only in case,
but actually refer to the same file.
Solution:
Previously, deduplication used `Set_cstr_t`. We can add a similar `Set_path_t`
that performs path-aware comparisons, ignoring case differences. On Windows, it
could also ignore path separator differences, and treat `C:\foo` and `\foo` as
the same path when the current drive is `C:`.
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
Problem:
On some non-US keyboards, like Estonian/Swedish/etc, widely used []
characters in vim are hard to type. One way to overcome this is to use langmap
option to map accented characters, that are in the same place as [] on US
keyboards to []. Unfortunately this does not work currently in neovim, it
cannot map multibyte characters via langmap.
Solution:
The fix iterates over characters in typeahead and key buffers, instead of bytes,
in getchar.c handle_mapping(). It does not handle macros though, these tests are
still failing when turned on.
Closes#2420Closes#27776
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
Co-authored-by: Justin M. Keyes <justinkz@gmail.com>
Problem: filetype: tf files sometimes incorrectly recognized
(Christian Robinson)
Solution: Add support for g;filetype_tf variable to override detection,
re-write the filetype detection loop
closes: vim/vim#20510
Supported by AI
522a39a489
Co-authored-by: Christian Brabandt <cb@256bit.org>
Problem: When a candidate gets truncated to MATCH_MAX_LEN and ends up
the same length as the needle, the n == m shortcut would
return SCORE_MAX with positions 0..n-1, even if the strings
actually differ.
Solution: Only use the shortcut if the truncated strings are truly equal.
Otherwise, fall back to regular matching.
Example:
echo matchfuzzypos(['x' .. repeat('a',1024)], repeat('a',1024))
closes: vim/vim#204751437f47815
Co-authored-by: glepnir <glephunter@gmail.com>
Problem: Problem with initializing the length of range() lists
Solution: Set length explicitly when it shouldn't contain any items
range() may cause a wrong calculation of list length, which may later
then cause a segfault in list_find(). This is usually not a problem,
because range_list_materialize() calculates the length, when it
materializes the list.
In addition, in list_find() when the length of the range was wrongly
initialized, it may seem to be valid, so the check for list index
out-of-bounds will not be true, because it is called before the list is
actually materialized. And so we may eventually try to access a null
pointer, causing a segfault.
So this patch does 3 things:
- In f_range(), when we know that the list should be empty, explicitly
set the list->lv_len value to zero. This should happen, when
start is larger than end (in case the stride is positive) or
end is larger than start when the stride is negative.
This should fix the underlying issue properly. However,
- as a safety measure, let's check that the requested index is not
out of range one more time, after the list has been materialized
and return NULL in case it suddenly is.
- add a few more tests to verify the behaviour.
fixes: vim/vim#13557closes: vim/vim#13563
--------
Vim9 (non) materialize list is N/A.
Port only tests.
df63da98d8
Co-authored-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Tim Pope <tpope@github.com>
Problem: statusline: buffer overflow with item groups
Solution: Fix the issues (see below) (Sébastien Hoffmann)
Fix various buffer overflow bugs (examples assume MAXPATHL==4096):
- truncated item groups where minwid>maxwid:
vim --clean +"set ls=2 stl=%<%{%repeat('x',4096-11)%}%50.5(12🙂345%)"
leads to fillchars spilling over the end of the group/buffer while trying to
compensate for truncating at a multicell character because minwid<=maxwid is assumed
- left-aligned item groups with multi-byte fillchar:
vim --clean +"set ls=2 fillchars+=stl:∙ stl=%<%{%repeat('x',4096-3)%}%-2(X%)"
wrongly leads to padding at the end of the statusline and `p-out==4097`
because the bounds check assumes a 1-byte fillchar
- right-aligned item groups with 1-byte fillchar:
vim --clean +"set ls=2 stl=%<%{%repeat('x',4096-4)%}%4(XY%)"
leads to "YX" instead of "XY" at the end of the statusline
because `memmove` is done before adjusting the offset
- right-aligned item groups with multi-byte fillchar:
vim --clean +"set ls=2 fillchars+=stl:∙ stl=%5(X%)"
leads to "∙∙∙∙<e2>", i.e. the fillchar is being written over the group contents
and eventually being overwritten itself at the second byte with the final NUL,
because the padding counter assumes a 1-byte fillchar; to crash vim,
vim --clean +"set ls=2 fillchars+=stl:∙ stl=%<%{%repeat('x',4096-149)%}%50(X%)"
related: neovim/neovim#40219
closes: vim/vim#20522d249884340
Co-authored-by: Sébastien Hoffmann <contact@shoffmann.dev>
Problem: Composing chars are no longer accepted in end-id abbreviation
(after 9.2.0629).
Solution: Unescape all chars using vim_unescape_csi() instead of using
mb_unescape() on individual chars, so that mb_ptr2len() and
MB_PTR_ADV() can still be used.
closes: vim/vim#2051423a84d28a8
Problem: 0x80 and 0x9b byte not unescaped when checking for valid abbr
(Mao-Yining)
Solution: Use mb_unescape() (zeertzjq).
fixes: vim/vim#20506closes: vim/vim#205081958c991a8
Problem:
Any random ftplugin or other autocmd, can throw an error when
`:checktime` reloads a buffer. This causes a trace which makes it look
like an issue with `autoread.lua`.
vim.schedule callback: …/runtime/lua/nvim/autoread.lua:146:
FileType Autocommands for "*"..function <SNR>1_LoadFTPlugin[20] ..script
…/runtime/ftplugin/help.lua: Vim(runtime):E5113: Lua chunk:
…/runtime/lua/vim/treesitter.lua:216: Index out of bounds
stack traceback:
[C]: in function 'nvim_buf_get_text'
…/runtime/lua/vim/treesitter.lua:216: in function 'get_node_text'
…/runtime/lua/vim/treesitter/query.lua:558: in function 'handler'
…/runtime/lua/vim/treesitter/query.lua:843: in function '_match_predicates'
…/runtime/lua/vim/treesitter/query.lua:1082: in function '(for generator)'
…/runtime/ftplugin/help.lua:91: in function 'runnables'
…/runtime/ftplugin/help.lua:124: in main chunk
[C]: in function 'checktime'
…/runtime/lua/nvim/autoread.lua:146: in function <…/runtime/lua/nvim/autoread.lua:138>
Solution:
Use pcall() and surface the error via nvim_echo.
Problem:
Old 'autoread' only did `:checktime` on focus-change and shell (":!")
commands, and only for non-hidden buffers. Since 'autoread' is now
driven by OS filewatcher events, buffers are updated much more eagerly.
This should be surfaced to the user somehow, either via a carefully
placed notification, or a minimal UI indicator.
A "notification" would be noisy, unless it is conditional on specific
circumstances (e.g. when "many" buffers are updated).
Solution:
Use the existing 'busy' buffer-local option as a subtle hint about
activity.
Problem: The semantic token module is using its own debounce timer for
the buffer on_lines event. If its internal debounce is shorter than the
changetracking module's debounce, it's possible for semantic token
requests to fire for changed buffers before the textDocument/didChange
notification is sent to the server.
Solution: Trigger semantic token requests from the LspNotify autocmd
when the method is the didChange or didOpen notifications, which
enforces a strict happens-before relationship for the sync change
notification followed by a semantic token request.
Note: There is still an internal debounce mechanism in the semantic
token module to handle other debouncing needs specific to its
functionality, such as debouncing server refresh notifications and
handling WinScrolled events when using range requests.
Problem: Keys valid in CTRL-X mode are never mapped while insert
completion is active, so <C-N> and <C-P> cannot be remapped
for completion started by complete().
Solution: Do not disable mappings in CTRL_X_EVAL mode. In this mode a
mapping cannot interfere with selecting the completion
method, which is what the no-mapping rule exists for.
related: vim/vim#6440
related: vim/vim#16880
closes: vim/vim#20489076585e6ad
Co-authored-by: Thomas M Kehrenberg <tmke8@posteo.net>
Problem: Deciding whether a group is in a "contains"/cluster list scans
the list and expands clusters on every check, which is slow for
syntaxes with large lists (e.g. plugins such as netrw).
Solution: Resolve each list once into a sorted, cluster-expanded set of
group IDs and use a binary search; cache it per syntax block and
drop the cache when syntax definitions change (Hirohito Higashi).
closes: vim/vim#2049048fbae4378
Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Problem: The "%" command jumps to parens and braces inside comments,
unlike the "=" operator (cindent), which ignores them.
Solution: When 'comments' defines C-style comments and "%" is not in
'cpoptions', skip matching parens inside such comments, except
when the cursor is inside a comment so a match there can still
be found.
fixes: vim/vim#20329
related: vim/vim#20111
closes: vim/vim#20491b8a109dcfb
Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Problem: gq (and other filters) on an empty buffer fail with
"E20: Mark not set": when the filter produces no output,
do_filter() still subtracts the line count from '[ and '],
pushing '] to line 0.
Solution: when the filter produces no output, put '[ and '] on a valid
line instead of subtracting past line 1 (glepnir).
related: neovim/neovim#30593
closes: vim/vim#19061aefbca2977
Problem:
Various out-of-bounds writes inherited from vim (examples assume MAXPATHL==4096):
- truncated item groups where minwid>maxwid:
nvim --clean +"set stl=%<%{%repeat('x',4096-11)%}%50.5(12🙂345%)"
leads to fillchars spilling over the end of the group/buffer while trying to
compensate for truncating at a multicell character because minwid<=maxwid is assumed
- left-aligned item groups with multi-byte fillchar:
nvim --clean +"set fillchars+=stl:∙ stl=%<%{%repeat('x',4096-3)%}%-2(X%)"
wrongly leads to padding at the end of the statusline and `out_p-out==4097`
because the bounds check assumes a 1-byte fillchar
- right-aligned item groups with 1-byte fillchar:
nvim --clean +"set stl=%<%{%repeat('x',4096-4)%}%4(XY%)"
leads to "YX" instead of "XY" at the end of the statusline
because `memmove` is done before adjusting the offset
- right-aligned item groups with multi-byte fillchar:
nvim --clean +"set fillchars+=stl:∙ stl=%5(X%)"
leads to "∙∙∙∙<e2>", i.e. the fillchar is being written over the group contents
and eventually being overwritten itself at the second byte with the final NUL,
because the padding counter assumes a 1-byte fillchar; to crash Neovim,
nvim --clean +"set fillchars+=stl:∙ stl=%<%{%repeat('x',4096-149)%}%50(X%)"
Solution:
Clearer variable names and no recycling of variables for different purposes.
Problem: Running `vim.filetype.match()` when current working directory
was removed from disk throws a `vim.fs.abspath` assertion error.
However, the matching might still be possible without trying to match
against full path (like if it is a known extension).
Solution: Safely compute absolute path and ignore it if it errors.
Problem: Clicking on a "below" virtual line interacts with the line
it is attached to for decor/drawing purposes, rather than
the line the extmark is placed at.
Solution: Account for "below" virtual lines when computing mouse line number.
Problem:
After 400f247397 the undotree test became flaky.
It seems to be caused by some kind of race condition where an entry in the undotree is not added when a change in the buffer happens (adding a bunch of sleep around buffer-change operations seems to fix the issue).
Solution:
Disable autoread plugin in undotree test.
Problem: Diagnostic virtual lines are hardcoded with "scroll" for
virt_lines_overflow option.
Solution: Add a `overflow` option to `virtual_lines` config
to support "wrap", "scroll", "trunc", and "auto".
Problem:
The 'autoread' option only checks for file changes reactively — on
FocusGained, :checktime, CmdlineEnter, etc. — by polling timestamps.
External changes are not detected until the user interacts with Neovim.
Solution:
Add a core module (runtime/lua/nvim/autoread.lua) enabled from
runtime/plugin/autoread.lua that watches each buffer's file using
vim._watch.watch() (libuv fs_event). On change detection it calls
:checktime, which invokes the existing buf_check_timestamp() logic
for reload/prompt handling. Watchers are managed via autocmds tied
to buffer lifecycle events and respect the 'autoread' option (global
and buffer-local).
