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authorChristian Clason <c.clason@uni-graz.at>2023-04-19 09:41:26 +0200
committerGitHub <noreply@github.com>2023-04-19 09:41:26 +0200
commit6d9f5b6bf0fc324b33ce01f74a6030c9271b1a01 (patch)
treed942589576d670c851119f7f90ad720f07d311a1 /runtime/lua/vim
parent95c6e1b7418e37530352418e93a18366acef6242 (diff)
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vim-patch:9.0.1464: strace filetype detection is expensive (#23175)
Problem: Strace filetype detection is expensive. Solution: Match with a cheap pattern first. (Federico Mengozzi, closes vim/vim#12220) https://github.com/vim/vim/commit/6e5a9f948221b52caaaf106079cb3430c4dd7c77 Co-authored-by: Federico Mengozzi <19249682+fedemengo@users.noreply.github.com>
Diffstat (limited to 'runtime/lua/vim')
-rw-r--r--runtime/lua/vim/filetype/detect.lua11
1 files changed, 9 insertions, 2 deletions
diff --git a/runtime/lua/vim/filetype/detect.lua b/runtime/lua/vim/filetype/detect.lua
index d1eabadc4a..94114ae7c3 100644
--- a/runtime/lua/vim/filetype/detect.lua
+++ b/runtime/lua/vim/filetype/detect.lua
@@ -1550,8 +1550,15 @@ local patterns_text = {
['^SNNS pattern definition file'] = 'snnspat',
['^SNNS result file'] = 'snnsres',
['^%%.-[Vv]irata'] = { 'virata', { start_lnum = 1, end_lnum = 5 } },
- ['[0-9:%.]* *execve%('] = 'strace',
- ['^__libc_start_main'] = 'strace',
+ function(lines)
+ if
+ -- inaccurate fast match first, then use accurate slow match
+ (lines[1]:find('execve%(') and lines[1]:find('^[0-9:%.]* *execve%('))
+ or lines[1]:find('^__libc_start_main')
+ then
+ return 'strace'
+ end
+ end,
-- VSE JCL
['^\\* $$ JOB\\>'] = { 'vsejcl', { vim_regex = true } },
['^// *JOB\\>'] = { 'vsejcl', { vim_regex = true } },