Problem: Contents of terminal buffer are not reflown when Nvim is
resized.
Solution: Enable reflow in libvterm by default. Now that libvterm is
vendored, also fix "TUI rapid resize" test failures there.
Note: Neovim's scrollback buffer does not support reflow (yet), so lines
vanishing into the buffer due to a too small window will be restored
without reflow.
Problem: Adding support for modern Nvim features (reflow, OSC 8, full
utf8/emoji support) requires coupling libvterm to Nvim internals
(e.g., utf8proc).
Solution: Vendor libvterm at v0.3.3.
Problem: Calling a function from an "expr" option has too much overhead.
Solution: Add call_simple_func() and use it for 'foldexpr'
https://github.com/vim/vim/commit/87b4e5c5db9d1cfd6f2e79656e1a6cff3c69d15f
Cherry-pick a call_func() change from patch 8.2.1343.
Add expr-option-function docs to options.txt.
Co-authored-by: Bram Moolenaar <Bram@vim.org>
- Reword a few sentences and reformat a few paragraphs.
- Supply absent capitalisation and punctuation.
- Make listed highlighting groups and code stand out.
- Prefix all Java-related global variables with "g:".
- Add spaces around each variable assignment operator.
- Acknowledge that some Javadoc variables are maintained in
the HTML syntax file.
Also, move the overridable _default_ HTML group links before
the HTML syntax file inclusion in order to implement the
documented diverged settings.
related: vim/vim#15399https://github.com/vim/vim/commit/3749dff093d8c3ba0cd34cebf42bd4d3d93afe26
Co-authored-by: Aliaksei Budavei <0x000c70@gmail.com>
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
Problem: regex: wrong match when searching multi-byte char
case-insensitive (diffsetter)
Solution: Apply proper case-folding for characters and search-string
This patch does the following 4 things:
1) When the regexp engine compares two utf-8 codepoints case
insensitive 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' 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
There is one tricky thing for the backtracing engine. We also need to
calculate correctly the number of bytes to compare the 2 different
utf-8 strings s1 and s2. So we will count the number of characters in
s1 that the byte len specified. Then we count the number of bytes to
step over the same number of characters in string s2 and then we can
correctly compare the 2 utf-8 strings.
2) A similar 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.
3) 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.
4) When comparing characters using collections, we must also apply case
folding to each character in the collection and not just to the
current character from the search string. This doesn't apply to the
NFA engine, because internally it converts collections to branches
[abc] -> a\|b\|c
fixes: vim/vim#14294closes: vim/vim#14756https://github.com/vim/vim/commit/22e8e12d9f5034e1984db0c567b281fda4de8dd7
N/A patches:
vim-patch:9.0.1771: regex: combining chars in collections not handled
vim-patch:9.0.1777: patch 9.0.1771 causes problems
Co-authored-by: Christian Brabandt <cb@256bit.org>
This is identical to `named_node_for_range` except that it includes
anonymous nodes. This maintains consistency in the API because we
already have `descendant_for_range` and `named_descendant_for_range`.
Problem: Plugin authors and distribution packagers are confused about
the role of LuaJIT vs. PUC Lua.
Solution: Clarify that LuaJIT is preferred but not required (extensions
should not be assumed but checked for) and that vanilla Lua 5.1 should
be used without language extensions such as `goto`.
Problem: calling `vim.filetype.match()` has performance bottleneck in
that it has to match a lot of Lua patterns against several versions of
input file name. This might be the problem if users need to call it
synchronously a lot of times.
Solution: add "parent pattern pre-matching" which can be used to quickly
reject several potential pattern matches at (usually rare) cost of
adding time for one extra Lua pattern match.
"Parent pattern" is a manually added/tracked grouping of filetype
patterns which should have two properties:
- Match at least the same set of strings as its filetype patterns.
But not too much more.
- Be fast to match.
For them to be effective, group should consist from at least three
filetype patterns.
Example: for a filetpye pattern ".*/etc/a2ps/.*%.cfg", both "/etc/"
and "%.cfg" are good parent patterns (prefer the one which can group
more filetype patterns).
After this commit, `vim.filetype.match()` on most inputs runs ~3.4
times faster (while some inputs may see less impact if they match
many parent patterns).
zeertzjq