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vim-patch:9.2.0174: diff: inline word-diffs can be fragmented
Problem: When using 'diffopt=inline:word', lines were excessively
fragmented with punctuation creating separate highlight
blocks, making it harder to read the diffs.
Solution: Added 'diff_refine_inline_word_highlight()' to merge
adjacent diff blocks that are separated by small gaps of
non-word characters (up to 5 bytes by default) (HarshK97).
When using inline:word diff mode, adjacent changed words separated by
punctuation or whitespace are now merged into a single highlight block
if the gap between them contains fewer than 5 non-word characters.
This creates more readable diffs and closely matches GitHub's own diff
display.
closes: vim/vim#19098
https://github.com/vim/vim/commit/42c6686c78d39843f71dba989a8ea59bc6975132
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Problem: 'cursorline' and part of 'statusline' are missing after
:diffput to an empty buffer.
Solution: Make sure the cursor doesn't go beyond the last line after
:diffput (zeertzjq)
related: neovim/neovim#37621
closes: vim/vim#19281
https://github.com/vim/vim/commit/ce1e562fdafa998e577d65a8b0a1b8bc1cbfcf4c
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Problem: Use-after-free in winframe_remove() (henices)
Solution: Set window_layout_locked() inside winframe_remove()
and check that writing diff files is disallowed when the
window layout is locked.
It can happen with a custom diff expression when removing a window:
1. Buffer was removed, so win_frame_remove() is called to remove the
window.
2. win_frame_remove() → frame_new_height() → scroll_to_fraction()
→ diff_check_fill() (checks for filler lines)
3. diff_check_fill() ends up causing a diff_try_update, and because we
are not using internal diff, it has to first write the file to a
buffer using buf_write()
4. buf_write() is called for a buffer that is not contained within a
window, so it first calls aucmd_prepbuf() to create a new temporary
window before writing the buffer and then later calls
aucmd_restbuf(), which restores the previous window layout, calling
winframe_remove() again, which will free the window/frame structure,
eventually freeing stuff that will still be accessed at step 2.
closes: vim/vim#19064
https://github.com/vim/vim/commit/ead1dda74a485ef0470e7252d07c1a36b8cde517
Nvim doesn't have this bug as Nvim uses a floating window as autocommand
window, and removing it doesn't need winframe_remove().
Co-authored-by: Christian Brabandt <cb@256bit.org>
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Problem: A few more typos in various files
Solution: Fix those (zeertzjq, antonkesy)
related: neovim/neovim#37348
closes: vim/vim#19153
https://github.com/vim/vim/commit/6a2b5b2246833f7922e38eabab7090e29e89c3a1
Co-authored-by: Anton Kesy <anton@kesy.de>
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Problem: printf format not checked for semsg().
Solution: Add GNUC attribute and fix reported problems. (Dominique Pelle,
closes vim/vim#3805)
https://github.com/vim/vim/commit/b5443cc46dd1485d6c785dd8c65a2c07bd5a17f3
Cherry-pick a change from patch 8.2.3830.
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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Problem: ml_get error when resizing window and using text property.
Solution: Validate botline of the right window. (closes vim/vim#7528)
https://github.com/vim/vim/commit/23999d799cfe844b604f193183f8f84052c8e746
Migrate to Vim's (in)validate_botline_win() API.
Nvim wants to pass "curwin" instead of hiding them
behind alias/macro/inline-function.
https://github.com/neovim/neovim/pull/37164#discussion_r2655006908
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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Problem: diff: missing diff size limit for xdiff
Solution: Impose file size limit for internal diff (xdiff)
(Yee Cheng Chin).
Git imposes a hard cap on file size for content that it passes to xdiff
(added to Git in dcd1742e56e, defined in xdiff-interface.h), due to
integer overflow concerns in xdiff. Vim doesn't specify such a limit
right now, which means it's possible for a user to diff a large file
(1GB+) and trigger these overflow issues.
Add the same size limit (1GB minus 1MB) to Vim and simply throws an
error when Vim encounters files larger than said limit. For now, reuse
the same error message regarding internal diff failures. There is no
need to add the same limit for external diff as it's up to each tool to
error check their input to decide what is appropriate or not.
closes: vim/vim#18891
https://github.com/vim/vim/commit/4af6d9755cba0dd07e881172f2a6e0efe9986ddc
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: More code can be moved to evalvars.c.
Solution: Move code to where it fits better. (Yegappan Lakshmanan,
closes vim/vim#4883)
https://github.com/vim/vim/commit/da6c03342117fb7f4a8110bd9e8627b612a05a64
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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Problem: diff: w_topline may be invalidated
Solution: Update lnum in diff_set_topline()
(Yee Cheng Chin).
This can happen in ex_diffupdate() for certain edge cases which cause
the logic to now be wrong. This was also the root cause for vim/vim#18437 where
Vim would crash due to a null pointer dereferencing (said pointer would
not be null under normal circumstances).
related: vim/vim#18437
closes: vim/vim#18484
https://github.com/vim/vim/commit/dd9ed46a39df8a8b08ef4b491fdf53bcbfdc0c2d
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: possible crash when calculating topline in diff.c
(youngmith)
Solution: Check for pointer being Null before accessing it
fixes: vim/vim#18437
https://github.com/vim/vim/commit/d32b3bb7ebe29f856a054cfd552c68afabd065c3
The POC is likely not applicable to Nvim due to #32160.
Co-authored-by: Christian Brabandt <cb@256bit.org>
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autocommand (#35760)
Problem: Diff mode crashes when adding text property in autocommand
(after 9.1.1557).
Solution: Only restore ML_EMPTY memline flag, ignore the others
(zeertzjq).
fixes: vim/vim#18288
closes: vim/vim#18291
https://github.com/vim/vim/commit/46e22fd2f73b03795a5922ba07621472713eddb3
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Problem: defaults: 'diffopt' option value can be improved
Solution: Update diffopt defaults to include "indent-heuristic" and
"inline:char" (Yee Cheng Chin)
The default diff options have not been updated much despite new
functionality having been added to Vim.
- indent-heurstic: This has been enabled by default in Git since
33de716387 in 2017. Given that Vim uses xdiff from Git, it makes sense
to track the default configuration from Git.
- inline:char: This turns on character-wise inline highlighting which is
generally much better than the default inline:simple. It has been
implemented since vim/vim#16881 and we have not seen reports of any issues
with it, and it has received good feedbacks.
closes: vim/vim#18255
https://github.com/vim/vim/commit/976b365305c2e9025813ff3c7fe52f8d927fafc3
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: ml_delete() often called with FALSE argument.
Solution: Use ml_delete_flags(x, ML_DEL_MESSAGE) when argument is TRUE.
https://github.com/vim/vim/commit/ca70c07b72c24aae3d141e67d08f50361f051af5
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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These are not needed after #35129 but making uncrustify still play nice
with them was a bit tricky.
Unfortunately `uncrustify --update-config-with-doc` breaks strings
with backslashes. This issue has been reported upstream,
and in the meanwhile auto-update on every single run has been disabled.
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(#35218)
Problem: diff: using diff anchors with hidden buffers fails silently
Solution: Give specific error message for diff anchors when using hidden
buffers (Yee Cheng Chin).
Diff anchors currently will fail to parse if a buffer used for diff'ing
is hidden. Previously it would just fail as the code assumes it would
not happen normally, but this is actually possible to do if `closeoff`
and `hideoff` are not set in diffopt. Git's default diff tool "vimdiff3"
also takes advantage of this.
This fix this properly would require the `{address}` parser to be
smarter about whether a particular address relies on window position or
not (e.g. the `'.` address requires an active window, but `'a` or `1234`
do not). Since hidden diff buffers seem relatively niche, just provide a
better error message / documentation for now. This could be improved
later if there's a demand for it.
related: vim/vim#17615
closes: vim/vim#17904
https://github.com/vim/vim/commit/cad3b2421de7b703e0ee619850a8a3bc55454281
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: Crash when using inline diff mode
(Ilya Grigoriev)
Solution: Set tp_diffbuf to NULL when skipping a diff block
(Yee Cheng Chin).
Fix an array out of bounds crash when using diffopt+=inline:char when 4
or more buffers are being diff'ed. This happens when one of the blocks
is empty. The inline highlight logic skips using that buffer's block,
but when another buffer is used later and calls diff_read() to merge the
diff blocks together, it could erroneously consider the empty block's
diff info which has not been initialized, leaving to diff numbers that
are invalid. Later on the diff num is used without bounds checking which
leads to the crash.
Fix this by making sure to unset tp_diffbuf to NULL when we skip a
block, so diff_read() will not consider this buffer to be used within
inline diff. Also, add more bounds checking just to be safe.
closes: vim/vim#17805
https://github.com/vim/vim/commit/c8b99e2d139cf72c567892e44939f2719f703fa8
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: not possible to anchor specific lines in diff mode
Solution: Add support for the anchoring lines in diff mode using the
'diffanchor' option (Yee Cheng Chin).
Adds support for anchoring specific lines to each other while viewing a
diff. While lines are anchored, they are guaranteed to be aligned to
each other in a diff view, allowing the user to control and inform the
diff algorithm what the desired alignment is. Internally, this is done
by splitting up the buffer at each anchor and run the diff algorithm on
each split section separately, and then merge the results back for a
logically consistent diff result.
To do this, add a new "diffanchors" option that takes a list of
`{address}`, and a new "diffopt" option value "anchor". Each address
specified will be an anchor, and the user can choose to use any type of
address, including marks, line numbers, or pattern search. Anchors are
sorted by line number in each file, and it's possible to have multiple
anchors on the same line (this is useful when doing multi-buffer diff).
Update documentation to provide examples.
This is similar to Git diff's `--anchored` flag. Other diff tools like
Meld/Araxis Merge also have similar features (called "synchronization
points" or "synchronization links"). We are not using Git/Xdiff's
`--anchored` implementation here because it has a very limited API
(it requires usage of the Patience algorithm, and can only anchor
unique lines that are the same across both files).
Because the user could anchor anywhere, diff anchors could result in
adjacent diff blocks (one block is directly touching another without a
gap), if there is a change right above the anchor point. We don't want
to merge these diff blocks because we want to line up the change at the
anchor. Adjacent diff blocks were first allowed when linematch was
added, but the existing code had a lot of branched paths where
line-matched diff blocks were handled differently. As a part of this
change, refactor them to have a more unified code path that is
generalized enough to handle adjacent diff blocks correctly and without
needing to carve in exceptions all over the place.
closes: vim/vim#17615
https://github.com/vim/vim/commit/0d9160e11ce4b921adff1e5621dd989ce96fb0f3
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: inconsistent range arg for :diffget/diffput
Solution: fix the range specification, place the cursor for :diffput and
:diffget consistently on the last line (Yee Cheng Chin)
Previously, `:<range>diffget` only allowed using 1 or above in the range
value, making it impossible to use the command for a diff block at the
beginning of the file. Fix the range specification so the user can now
use 0 to specify the space before the first line. This allows
`:0,$+1diffget` to work to retrieve all the changes from the other file
instead of missing the first diff block. Also do this for `:diffput`.
Also, make `:diffput` work more similar to `:diffget`. Make it so that
if the cursor is on the last line and a new line is inserted in the
other file, doing `:diffput` will select that diff block below the line,
just like `:diffget` would.
Also clean up the logic a little bit for edge cases and for handling
line matched diff blocks better.
closes: vim/vim#17579
https://github.com/vim/vim/commit/d75ab0cbf5cfaefab3edb0aa553954de70b236f8
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: Last diff folds not merged (after v8.1.1922)
Solution: loop over all windows in the current tabpage and update all
folds (Gary Johnson)
This commit fixes a bug where the last two folds of a diff are not
merged when the last difference between the two diff'd buffers is
resolved.
Normally, when two buffers are diff'd, folding is used to show only the
text that differs and to hide the text that is the same between the two
buffers. When a difference is resolved by making a block of text the
same in both buffers, the folds are updated to merge that block with the
folds above and below it into one closed fold.
That updating of the folds did not occur when the block of text was the
last diff block in the buffers.
The bug was introduced by this patch on August 24, 2019:
patch 8.1.1922: in diff mode global operations can be very slow
Problem: In diff mode global operations can be very slow.
Solution: Do not call diff_redraw() many times, call it once when
redrawing. And also don't update folds multiple times.
Unfortunately, folds were then not updated often enough.
The problem was fixed by adding a short loop to the ex_diffgetput()
function in diff.c to update all the folds in the current tab when the
last difference is removed.
A test for this was added to test_diffmode.vim. Two of the reference
screen dumps for another test in that file,
Test_diffget_diffput_linematch(), had to be changed to have all the
folds closed rather than to have the last diff block remain open.
closes: vim/vim#17457
https://github.com/vim/vim/commit/3fa0d3514b928e0b21ef24594785f9104a3ffafd
Co-authored-by: Gary Johnson <garyjohn@spocom.com>
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Related https://github.com/neovim/neovim/commit/267494151bcc6e4fff7b9b8c80b7a5f42e2aa002
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test_inst_complete.vim (#33527)
Problem: Various typos in the code, redundant and strange use of
:execute in test_ins_complete.vim (after 9.1.1315).
Solution: Fix typos in the code and in the documentation, use the
executed command directly (zeertzjq).
closes: vim/vim#17143
https://github.com/vim/vim/commit/98800979dc109e03f390a0472b14ed89189e02fe
Co-authored-by: Christ van Willegen <cvwillegen@gmail.com>
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Problem:
vim.uv.os_setenv gets "stuck" per-key. #32550
Caused by the internal `envmap` cache. #7920
:echo $FOO <-- prints nothing
:lua vim.uv.os_setenv("FOO", "bar")
:echo $FOO <-- prints bar (as expected)
:lua vim.uv.os_setenv("FOO", "fizz")
:echo $FOO <-- prints bar, still (not expected. Should be "fizz")
:lua vim.uv.os_unsetenv("FOO")
:echo $FOO <-- prints bar, still (not expected. Should be nothing)
:lua vim.uv.os_setenv("FOO", "buzz")
:echo $FOO <-- prints bar, still (not expected. Should be "buzz")
Solution:
- Remove the `envmap` cache.
- Callers to `os_getenv` must free the result.
- Update all call-sites.
- Introduce `os_getenv_noalloc`.
- Extend `os_env_exists()` the `nonempty` parameter.
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(#33323)
Problem: inline word diff treats multibyte chars as word char
(after 9.1.1243)
Solution: treat all non-alphanumeric characters as non-word characters
(Yee Cheng Chin)
Previously inline word diff simply used Vim's definition of keyword to
determine what is a word, which leads to multi-byte character classes
such as emojis and CJK (Chinese/Japanese/Korean) characters all
classifying as word characters, leading to entire sentences being
grouped as a single word which does not provide meaningful information
in a diff highlight.
Fix this by treating all non-alphanumeric characters (with class number
above 2) as non-word characters, as there is usually no benefit in using
word diff on them. These include CJK characters, emojis, and also
subscript/superscript numbers. Meanwhile, multi-byte characters like
Cyrillic and Greek letters will still continue to considered as words.
Note that this is slightly inconsistent with how words are defined
elsewhere, as Vim usually considers any character with class >=2 to be
a "word".
related: vim/vim#16881 (diff inline highlight)
closes: vim/vim#17050
https://github.com/vim/vim/commit/9aa120f7ada592ed03b37f4de8ee413c5385f123
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: coverity complains about some changes in v9.1.1243
Solution: remove duplicate code in diff_find_changed() (Yee Cheng Chin)
closes: vim/vim#16988
https://github.com/vim/vim/commit/4f9b1243e3ef60b9efb64a4e789c55be3cdc7a25
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Problem: Diff mode's inline highlighting is lackluster. It only
performs a line-by-line comparison, and calculates a single
shortest range within a line that could encompass all the
changes. In lines with multiple changes, or those that span
multiple lines, this approach tends to end up highlighting
much more than necessary.
Solution: Implement new inline highlighting modes by doing per-character
or per-word diff within the diff block, and highlight only the
relevant parts, add "inline:simple" to the defaults (which is
the old behaviour)
This change introduces a new diffopt option "inline:<type>". Setting to
"none" will disable all inline highlighting, "simple" (the default) will
use the old behavior, "char" / "word" will perform a character/word-wise
diff of the texts within each diff block and only highlight the
differences.
The new char/word inline diff only use the internal xdiff, and will
respect diff options such as algorithm choice, icase, and misc iwhite
options. indent-heuristics is always on to perform better sliding.
For character highlight, a post-process of the diff results is first
applied before we show the highlight. This is because a naive diff will
create a result with a lot of small diff chunks and gaps, due to the
repetitive nature of individual characters. The post-process is a
heuristic-based refinement that attempts to merge adjacent diff blocks
if they are separated by a short gap (1-3 characters), and can be
further tuned in the future for better results. This process results in
more characters than necessary being highlighted but overall less visual
noise.
For word highlight, always use first buffer's iskeyword definition.
Otherwise if each buffer has different iskeyword settings we would not
be able to group words properly.
The char/word diffing is always per-diff block, not per line, meaning
that changes that span multiple lines will show up correctly.
Added/removed newlines are not shown by default, but if the user has
'list' set (with "eol" listchar defined), the eol character will be be
highlighted correctly for the specific newline characters.
Also, add a new "DiffTextAdd" highlight group linked to "DiffText" by
default. It allows color schemes to use different colors for texts that
have been added within a line versus modified.
This doesn't interact with linematch perfectly currently. The linematch
feature splits up diff blocks into multiple smaller blocks for better
visual matching, which makes inline highlight less useful especially for
multi-line change (e.g. a line is broken into two lines). This could be
addressed in the future.
As a side change, this also removes the bounds checking introduced to
diff_read() as they were added to mask existing logic bugs that were
properly fixed in vim/vim#16768.
closes: vim/vim#16881
https://github.com/vim/vim/commit/9943d4790e42721a6777da9e12637aa595ba4965
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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They were moved in Vim in patch 8.1.1989.
This change is required to port patch 9.1.1243.
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Problem: Vim's diff block merging algorithm when doing a multi-file diff
is buggy when two different diff hunks overlap a single
existing diff block (after v9.1.0743)
Solution: fix a couple bugs in this logic:
1. Fix regression from v9.1.0743 where it's not correctly expanding the
2nd overlap correctly, where it always expands without taking into
account that this was always taken care of when the first overlap
happened. Instead, we should only grow the 2nd overlap if it overhangs
outside the existing diff block, and if we encounter a new overlapping
diff block (due to overlap chaining).
2. When we expand a diff block to match the hunk size on the orig side
(when handling the first overlap), we expand the same amount of lines
in the new side. This is not sound if there exists a second overlap
hunk that we haven't processed yet, and that hunk has different
number of lines in orig/new. Fix this by doing the corresponding
counter adjustment when handling 2nd/3rd/etc overlap by calculating
the difference in lines between orig and new side.
(Yee Cheng Chin)
closes: vim/vim#16768
https://github.com/vim/vim/commit/bc08ceb75572dcac57ef5019f3d0df6e8290c0f9
Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>
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Implement an extmark property that conceals lines vertically.
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Problem: no sanitize check when running linematch
Solution: add sanitize check before applying the linematch algorithm,
similar to diff_find_change() (Jonathon)
closes: vim/vim#16446
https://github.com/vim/vim/commit/ca307efe486670b76563a4a287bc94dace57fb74
Co-authored-by: Jonathon <jonathonwhite@protonmail.com>
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Problem: Coverity complains about dereferencing NULL pointer
Solution: Verify curdiff is not null before dereferencing it
closes: vim/vim#16437
https://github.com/vim/vim/commit/a9f77be9223f8b886d89f7fac778d363586beb85
Co-authored-by: Christian Brabandt <cb@256bit.org>
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Problem: diff feature can be improved
Solution: include the linematch diff alignment algorithm
(Jonathon)
closes: vim/vim#9661
https://github.com/vim/vim/commit/7c7a4e6d1ad50d5b25b42aa2d5a33a8d04a4cc8a
Co-authored-by: Jonathon <jonathonwhite@protonmail.com>
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Problem: v9.1.0743 causes regression with diff mode
Solution: Fix the regression with overlapping regions
closes: vim/vim#16454
https://github.com/vim/vim/commit/01f6509fb2de1627cc4ec2c109cd0aa2e3346d50
Co-authored-by: Yukihiro Nakadaira <yukihiro.nakadaira@gmail.com>
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directly" (#31924)
Reverts #31112
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Problem: Currently, we use `switch_option_context` to temporarily switch the current option context before setting an option for a different buffer / window. This is not ideal because we already support getting and setting option values for non-current contexts in the underlying implementation.
Solution: Set option value for non-current context by passing the context directly to the lower level functions. Also introduce a new `OptCtx` struct to store option context information, this will scale much better if we add more option scopes and other context information in the future.
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Result of `make iwyu` (after some "fixups").
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Problem: Option metadata like list of valid values for an option and
option flags are not listed in the `options.lua` file and are instead
manually defined in C, which means option metadata is split between
several places.
Solution: Put metadata such as list of valid values for an option and
option flags in `options.lua`, and autogenerate the corresponding C
variables and enums.
Supersedes #28659
Co-authored-by: glepnir <glephunter@gmail.com>
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Problem:
The way option scopes currently work is inflexible and does not allow for nested
option scopes or easily finding the value of an option at any arbitrary scope
without having to do long handwritten switch-case statements like in
`get_varp()`. `.indir` is also confusing and redundant since option indices for
each scope can be autogenerated.
Solution:
Expand option scopes in such a way that an option can support any amount of
scopes using a set of scope flags, similarly to how it's already done for option
types. Also make options contain information about its index at each scope it
supports. This allows for massively simplifying `get_varp()` and
`get_varp_scope()` in the future by just using a struct for options at each
scope. This would be done by creating a table that stores the offset of an
option's variable at a scope by using the option's index at that scope as a key.
This PR also autogenerates enums for option indices at each scope to remove the
need for `.indir` entirely, and also to allow easily iterating over options all
options that support any scope.
Ref: #29314
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Problem:
Linematch used to use strchr to navigate a string, however strchr does
not supoprt embedded NULs.
Solution:
Use `mmfile_t` instead of `char *` in linematch and introduce `strnchr()`.
Also remove heap allocations from `matching_char_iwhite()`
Fixes: #30505
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(#30532)
Problem: diff mode does not handle overlapping diffs correctly
Solution: correct the logic to handle overlapping blocks
(Yukihiro Nakadaira)
Vim merges overlapped diff blocks and it doesn't work expectedly
in some situation.
closes: vim/vim#15735
https://github.com/vim/vim/commit/06fe70c183a53ea97cd42ace490d4fb9fd14f042
Co-authored-by: Yukihiro Nakadaira <yukihiro.nakadaira@gmail.com>
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Problem: incorrect internal diff with an empty file
Solution: Set pointer to NULL, instead of using an empty line file
(Yukihiro Nakadaira)
When using internal diff, empty file is read as one empty line file.
So result differs from external diff.
closes: vim/vim#15719
https://github.com/vim/vim/commit/f1694b439bb175d956b49da620f1253462ec507b
Co-authored-by: Yukihiro Nakadaira <yukihiro.nakadaira@gmail.com>
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- Also merge diff_buf_idx_tp into diff_buf_idx.
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Problem:
`'scrollbind'` does not work properly if the window being scrolled
automatically contains any filler/virtual lines (except for diff filler
lines).
This is because when the scrollbind check is done, the logic only
considers changes to topline which are represented as line numbers.
Solution:
Write the logic for determine the scroll amount to take into account
filler/virtual lines.
Fixes #29751
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Problem:
Variables are often assigned multiple places in common patterns.
Solution:
Replace these common patterns with different patterns that reduce the
number of assignments.
Use `MAX` and `MIN`:
```c
if (x < y) {
x = y;
}
// -->
x = MAX(x, y);
```
```c
if (x > y) {
x = y;
}
// -->
x = MIN(x, y);
```
Use ternary:
```c
int a;
if (cond) {
a = b;
} els {
a = c;
}
// -->
int a = cond ? b : c;
```
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Co-authored-by: Christian Clason <c.clason@uni-graz.at>
Co-authored-by: zeertzjq <zeertzjq@outlook.com>
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revert: "refactor: use S_LEN(s) instead of s, n (#29219)"
This reverts commit c37695a5d5f2e8914fff86f3581bed70b4c85d3c.
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refactor(memory): use builtin strcat() instead of STRCAT()
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