Problem: Coverity warning in cstrncmp()
(after v9.1.0645)
Solution: Change the type of n2 to int.
(zeertzjq)
________________________________________________________________________________________________________
*** CID 1615684: Integer handling issues (INTEGER_OVERFLOW)
/src/regexp.c: 1757 in cstrncmp()
1751 n1 -= mb_ptr2len(s1);
1752 MB_PTR_ADV(p);
1753 n2++;
1754 }
1755 // count the number of bytes to advance the same number of chars for s2
1756 p = s2;
>>> CID 1615684: Integer handling issues (INTEGER_OVERFLOW)
>>> Expression "n2--", which is equal to 18446744073709551615, where "n2" is known to be equal to 0, underflows the type that receives it, an unsigned integer 64 bits wide.
1757 while (n2-- > 0 && *p != NUL)
1758 MB_PTR_ADV(p);
1759
1760 n2 = p - s2;
1761
1762 result = MB_STRNICMP2(s1, s2, *n, n2);
closes: vim/vim#15409e8feaa354e
Problem: Cannot use an autoload function from a package under start.
Solution: Also look in the "start" package directory. (Bjorn Linse,
closesvim/vim#7193)
223a950a85
Nvim already does this in do_in_cached_path(), and this change has no
effect in Nvim as Nvim removes DIP_START after do_in_cached_path().
Accidentally failed to mark as ported:
vim-patch:8.2.1731: Vim9: cannot use += to append to empty NULL list
Co-authored-by: bfredl <bjorn.linse@gmail.com>
Problem: eval5() and eval7 are too complex
Solution: Refactor eval5() and eval7() in eval.c
(Yegappan Lakshmanan)
closes: vim/vim#14900734286e4c6
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.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: Coverity warning after 9.1.0440
Solution: Fix Coverity warning, add a test and
reduce the calls to clear_tv()
(Yegappan Lakshmanan).
closes: vim/vim#14845dbac0da631
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Problem: Some functions are not tested
Solution: Add a few more tests, fix a few minor problems
(Yegappan Lakshmanan)
closes: vim/vim#14789fe424d13ef
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
Problem: Cannot use a method with a complex expression.
Solution: Evaluate the expression after "->" and use the result.
c665dabdf4
Cherry-pick a "verbose" check from patch 8.2.4123.
N/A patches for version.c:
vim-patch:8.2.4102: Vim9: import cannot be used after method
vim-patch:8.2.4110: Coverity warns for using NULL pointer
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Vim9: cannot use += to append to empty NULL list.
Solution: Copy the list instead of extending it. (closesvim/vim#6998)
81ed496048
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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#1475622e8e12d9f
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>
Problem: Illegal memory access when pattern starts with illegal byte.
Solution: Do not match a character with an illegal byte.
f50940531d
Co-authored-by: Bram Moolenaar <Bram@vim.org>
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;
```
Problem: Cannot use items() on a string.
Solution: Make items() work on a string. (closesvim/vim#11016)
3e518a8ec7
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: items() does not work on a list. (Sergey Vlasov)
Solution: Make items() work on a list. (closesvim/vim#11013)
976f859763
Skip CHECK_LIST_MATERIALIZE.
Co-authored-by: Bram Moolenaar <Bram@vim.org>
Problem: Check that mapping rhs starts with lhs doesn't work if lhs is
not simplified.
Solution: Keep track of the mapblock containing the alternative lhs and
also compare with it (zeertzjq).
fixes: vim/vim#15376closes: vim/vim#153849d997addc7
Cherry-pick removal of save_m_str from patch 8.2.4059.
Problem: E1510 may happen when formatting a message
(after 9.1.0181).
Solution: Only give E1510 when using typval. (zeertzjq)
closes: vim/vim#153910dff31576a
Problem: Rename of pum hl_group is incomplete in source.
Solution: Also rename the test function. Rename to user_hlattr in code
to avoid confusion with pum_extra. Add test with matched text
highlighting (zeertzjq).
closes: vim/vim#153484100852e09
Reduce calls to hasFolding() and remove the has_fold argument.
For lines that don't have virtual lines this should be more efficient as
it should avoid any calls to hasFolding(), whereas before it was called
at least once for any buffer containing at least one virtual line.
This will be slightly less efficient for lines with multiple virtual
lines marks as hasFolding() is called once for each mark. This could be
optimized, but having multiple virtual lines marks on a single line is
very rare.
Problem: cannot mark deprecated attributes in completion menu
Solution: add hl_group to the Dictionary of supported completion fields
(glepnir)
closes: vim/vim#15314508e7856ec
Co-authored-by: glepnir <glephunter@gmail.com>
Also:
- Remove mt_end() and MT_FLAG_DECOR_VIRT_TEXT_INLINE checks, as they are
already checked by marktree_itr_check_filter().
- Move ns_in_win() to the last check in decor_redraw_col().
Problem: Unnecessary STRLEN() in make_percent_swname()
Solution: Pass the end of "dir" to make_percent_swname()
(zeertzjq)
closes: vim/vim#15340242667ae14
Problem: Cursor moves beyond start of a folded range at the end of a buffer.
Solution: Move cursor to start of fold when going beyond end of buffer.
Check that cursor moved to detect FAIL in outer cursor function.
(Luuk van Baal)
dc373d456b
libtermkey does not know how to parse CSI subparameters (parameters
separated by ':', ASCII 0x3A) and currently just ignores them. However,
many important CSI sequences sent by the terminal make use of
subparameters, most notably key events when using the kitty keyboard
protocol [1]. Enabling subparameters is a prerequisite for expanding
kitty keyboard protocol support in Neovim.
Concretely, we do this by returning pointers into the internal termkey
buffer for each CSI parameter rather than parsing them into integers
directly. When a caller wants to actually use the parameter as an
integer, they must call termkey_interpret_csi_param, which parses the
full parameter string into an integer parameter and zero or more
subparameters.
The pointers into the internal buffer will become invalidated when new
input arrives from the terminal so it is important that the individual
params are used and parsed right away. All of our code (and libtermkey's
code) does this, so this is fine for now, but is something to keep in
mind moving forward.
[1]: https://sw.kovidgoyal.net/kitty/keyboard-protocol/
Problem: Marks whose position did not change with the action that
invalidated them (right_gravity = false) are not revalidated
upon undo.
Solution: Remove early return when restoring a marks saved position so
that it is still revalidated. Add "move" guards instead.
Problem: Wrong cursor position with 'breakindent' when a double-width
character doesn't fit in a screen line (mikoto2000)
Solution: Include the width of the 'breakindent' properly.
(zeertzjq)
fixes: vim/vim#15289closes: vim/vim#15290b5d6b5caac
Problem: Functions are global while they could be local.
Solution: Add "static". Add a few tests. (Yegappan Lakshmanan,
closesvim/vim#10612)
ee47eaceaa
Omit script_name_after_autoload(), untrans_function_name(): Vim9 script
only.
Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
