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Speed up ATX heading and ordered list matching #233

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Speed up ATX heading and ordered list matching #233

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16 changes: 8 additions & 8 deletions syntax/markdown.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
" Language: Markdown
" Maintainer: Tim Pope <https://github.com/tpope/vim-markdown>
" Filenames: *.markdown
" Last Change: 2022 Oct 13
" Last Change: 2026 Sep 09

if exists("b:current_syntax")
finish
Expand Down Expand Up @@ -74,20 +74,20 @@ syn match markdownH2 "^.\+\n-\+$" contained contains=@markdownInline,markdownHea

syn match markdownHeadingRule "^[=-]\+$" contained

syn region markdownH1 matchgroup=markdownH1Delimiter start=" \{,3}#\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH2 matchgroup=markdownH2Delimiter start=" \{,3}##\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH3 matchgroup=markdownH3Delimiter start=" \{,3}###\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH4 matchgroup=markdownH4Delimiter start=" \{,3}####\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH5 matchgroup=markdownH5Delimiter start=" \{,3}#####\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH6 matchgroup=markdownH6Delimiter start=" \{,3}######\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH1 matchgroup=markdownH1Delimiter start="\%#=1 \{,3}#\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH2 matchgroup=markdownH2Delimiter start="\%#=1 \{,3}##\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH3 matchgroup=markdownH3Delimiter start="\%#=1 \{,3}###\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH4 matchgroup=markdownH4Delimiter start="\%#=1 \{,3}####\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH5 matchgroup=markdownH5Delimiter start="\%#=1 \{,3}#####\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained
syn region markdownH6 matchgroup=markdownH6Delimiter start="\%#=1 \{,3}######\s" end="#*\s*$" keepend oneline contains=@markdownInline,markdownAutomaticLink contained

syn match markdownBlockquote ">\%(\s\|$\)" contained nextgroup=@markdownBlock

syn region markdownCodeBlock start="^\n\( \{4,}\|\t\)" end="^\ze \{,3}\S.*$" keepend

" TODO: real nesting
syn match markdownListMarker "\%(\t\| \{0,4\}\)[-*+]\%(\s\+\S\)\@=" contained
syn match markdownOrderedListMarker "\%(\t\| \{0,4}\)\<\d\+\.\%(\s\+\S\)\@=" contained
syn match markdownOrderedListMarker "\%#=1\%(\t\| \{0,4}\)\<\d\+\.\%(\s\+\S\)\@=" contained

syn match markdownRule "\* *\* *\*[ *]*$" contained
syn match markdownRule "- *- *-[ -]*$" contained
Expand Down