Problem: Regex engines do not handle case-folding well
Solution: Correctly calculate byte length of characters to skip
When the regexp engine compares two utf-8 codepoints case insensitively
it may match an adjacent character, because it assumes it can step over
as many bytes as the pattern contains.
This however is not necessarily true because of case-folding, a
multi-byte UTF-8 character can be considered equal to some single-byte
value.
Let's consider the pattern 'ſ' and the string 's'. When comparing and
ignoring case, the single character 's' matches, and since it matches
Vim will try to step over the match (by the amount of bytes of the
pattern), assuming that since it matches, the length of both strings is
the same.
However in that case, it should only step over the single byte
value 's' so by 1 byte and try to start matching after it again. So for the
backtracking engine we need to ensure:
- we try to match the correct length for the pattern and the text
- in case of a match, we step over it correctly
The same thing can happen for the NFA engine, when skipping to the next
character to test for a match. We are skipping over the regstart
pointer, however we do not consider the case that because of
case-folding we may need to adjust the number of bytes to skip over. So
this needs to be adjusted in find_match_text() as well.
A related issue turned out, when prog->match_text is actually empty. In
that case we should try to find the next match and skip this condition.
fixes: vim/vim#14294closes: vim/vim#144337a27c108e0
Co-authored-by: Christian Brabandt <cb@256bit.org>
runtime(vim): Update base-syntax, no curly-brace names in Vim9 script (vim/vim#14466)
Remove curly-brace name matching for :def functions. This is not
supported in Vim9 script.
e43ace558a
Co-authored-by: dkearns <dougkearns@gmail.com>
Problem: Vim9: comment may be treated as heredoc start.
(Ernie Rael)
Solution: Use skip_var_list() instead of find_name_end().
(zeertzjq)
fixes: vim/vim#14444closes: vim/vim#144469a91d2b72c
Problem: plines_m_win() does not take into account it's "limit_winheight"
argument for filler lines below the last line of the buffer.
(after v9.1.0280)
Solution: Check window height when "limit_winheight" is TRUE.
(Luuk van Baal)
08b0f632c1
Problem: Wrong doc style for pandoc syntax description,
Test_diff_eob_halfpage() may fail depending on
screen size, using braces in highlight.c when
not necessary
Solution: Fix pandoc documentation, make sure the window
for the test has 7 lines, remove the braces.
a040019be6
Co-authored-by: Christian Brabandt <cb@256bit.org>
Problem: filetype: R history files are not recognized
Solution: Detect '.Rhistory' files as r filetype
(Wu, Zhenyu)
closes: vim/vim#14440fc21b6437c
Co-authored-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Problem: Some code lines not covered by tests.
Solution: Add a few more test cases. Fix getting more than one error for
invalid assignment.
8b716f5f22
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Logic to make sure cursor is in visible part of the screen after
scrolling the text with 'smoothscroll' is scattered, asymmetric
and contains bugs.
Solution: Adjust and create helper function for 'smoothscroll' cursor logic.
(Luuk van Baal)
9148ba8a46
Problem: "zb" does not reveal filler lines at the start of a buffer.
Scrolled cursor position with 'smoothscroll' is unpredictable,
and may reset skipcol later if it is not visible (after v9.1.258)
Solution: Replace confusing for loop that reaches final control value too
early with while loop. Set "w_curswant" accordingly so cursor
will be placed in visible part of topline.
(Luuk van Baal)
bd28cae1f1
Problem: Support for 'smoothscroll' in (half-)page scrolling
broke backward compatibility and can be made to work better.
(after v9.1.215)
Solution: Restore the previous cursor and end-of-buffer behavior for
half-page scrolling and improve 'smoothscroll' support.
(Luuk van Baal)
cb204e688e
It's a combination of add_custom_target and add_custom_command that does
what most users probably expect should happen.
This also fixes `make clean` removing files tracked by git.
Problem: Autocommand may change currect directory after :tcd and :lcd.
Solution: Also clear tp_localdir and w_localdir when using aucmd_win.
(zeertzjq)
closes: vim/vim#144359d956ee8ea
runtime(doc): Normalise builtin-function optional parameter formatting
These should generally be formatted as func([{arg}]) and referenced as
{arg} in the description.
closes: vim/vim#144389cd9e759ab
Co-authored-by: Doug Kearns <dougkearns@gmail.com>
This actually won't cause "duplicate tag" errors if plugins have tags of
the same name, because E154 is only given for duplicate tags in the same
directory.
Without those tags, trying to use :h for these mappings jumps to other
places, because there are matches with higher score.
Also close Nvim instance before removing log file, otherwise the Nvim
instance will still write to the log file.
Also adjust log level in libuv_process_spawn(). Ref #27660
Problem: Invalid assert for empty signcols range. The empty range
should already be removed from "b_signcols" at this point.
The "clear" == kTrue call before the splice that made the
range empty will have removed it, and the "clear" == kNone
call after the splice already ignores the empty range.
Solution: Return early when "row2" < "row1".
Now that Nvim always supports nanotime, sleeping for some milliseconds
is actually enough, but for test_stat.vim keeping some longer sleeps may
increase test coverage, so just match the upstream test.
Problem: Test for TextChanged is still flaky with ASAN.
Solution: Don't index the result of readfile().
(zeertzjq)
It turns out that with ASAN the file may become empty during a write
even if it's non-empty both before and after the write, in which case
indexing the result of readfile() will error, so use join() instead.
Also don't delete the file halfway the test, just in case it may cause
errors on the next read.
closes: vim/vim#14421e9ff79a7c9
