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vim-patch:9.1.0694: matchparen is slow on a long line (#30134)

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Problem:  The matchparen plugin is slow on a long line.
Solution: Don't use a regexp to get char at and before cursor.
          (zeertzjq)

Example:

```vim
  call setline(1, repeat(' foobar', 100000))
  runtime plugin/matchparen.vim
  normal! $hhhhhhhh
```

closes: vim/vim#15568

81e7513c86
(cherry picked from commit cf44121f7f)
This commit is contained in:
zeertzjq
2024-08-25 06:07:43 +08:00
committed by github-actions[bot]
parent dca6c4e92c
commit 1ed493cc96
3 changed files with 107 additions and 10 deletions
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30
test/old/testdir/test_matchparen.vim
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@@ -108,5 +108,35 @@ func Test_matchparen_pum_clear()
call StopVimInTerminal(buf)
endfunc
" Test that matchparen works with multibyte chars in 'matchpairs'
func Test_matchparen_mbyte()
CheckScreendump
let lines =<< trim END
source $VIMRUNTIME/plugin/matchparen.vim
call setline(1, ['aaaaaaaa（', 'bbbb）cc'])
set matchpairs+=（:）
END
call writefile(lines, 'XmatchparenMbyte', 'D')
let buf = RunVimInTerminal('-S XmatchparenMbyte', #{rows: 10})
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_1', {})
call term_sendkeys(buf, "$")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_2', {})
call term_sendkeys(buf, "j")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_3', {})
call term_sendkeys(buf, "2h")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_4', {})
call term_sendkeys(buf, "0")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_5', {})
call term_sendkeys(buf, "kA")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_6', {})
call term_sendkeys(buf, "\<Down>")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_7', {})
call term_sendkeys(buf, "\<C-W>")
call VerifyScreenDump(buf, 'Test_matchparen_mbyte_8', {})
call StopVimInTerminal(buf)
endfunc
" vim: shiftwidth=2 sts=2 expandtab