From 6d9f5b6bf0fc324b33ce01f74a6030c9271b1a01 Mon Sep 17 00:00:00 2001 From: Christian Clason Date: Wed, 19 Apr 2023 09:41:26 +0200 Subject: 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> --- runtime/lua/vim/filetype/detect.lua | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'runtime/lua/vim') 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 } }, -- cgit