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Add syntax highlighting for shortcut reference links

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Shortcut reference links are defined in three of the most common
Markdown implementations:

- [Pandoc](https://pandoc.org/MANUAL.html#extension-shortcut_reference_links)
- [CommonMark](https://spec.commonmark.org/0.29/#shortcut-reference-link)
- [Github Flavored Markdown](https://github.github.com/gfm/#shortcut-reference-link)
This commit is contained in:
Greg Anders
2020-07-21 17:10:13 -06:00
parent 296eeaa887
commit 9869533e28
1 changed files with 3 additions and 1 deletions
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4
syntax/markdown.vim
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@@ -81,7 +81,6 @@ syn match markdownRule "- *- *-[ -]*$" contained
syn match markdownLineBreak " \{2,\}$"
syn region markdownIdDeclaration matchgroup=markdownLinkDelimiter start="^ \{0,3\}!\=\[" end="\]:" oneline keepend nextgroup=markdownUrl skipwhite
syn match markdownUrl "\S\+" nextgroup=markdownUrlTitle skipwhite contained
syn region markdownUrl matchgroup=markdownUrlDelimiter start="<" end=">" oneline keepend nextgroup=markdownUrlTitle skipwhite contained
syn region markdownUrlTitle matchgroup=markdownUrlTitleDelimiter start=+"+ end=+"+ keepend contained
@@ -92,6 +91,8 @@ syn region markdownLinkText matchgroup=markdownLinkTextDelimiter start="!\=\[\%(
syn region markdownLink matchgroup=markdownLinkDelimiter start="(" end=")" contains=markdownUrl keepend contained
syn region markdownId matchgroup=markdownIdDelimiter start="\[" end="\]" keepend contained
syn region markdownAutomaticLink matchgroup=markdownUrlDelimiter start="<\%(\w\+:\|[[:alnum:]_+-]\+@\)\@=" end=">" keepend oneline
syn region markdownShortcutLink matchgroup=markdownLinkTextDelimiter start="!\=\[\%(\_[^][]*]\%( \=[[(]\)\@!\)\@=" end="\]" contains=@markdownInline,markdownLineStart
syn region markdownIdDeclaration matchgroup=markdownLinkDelimiter start="^ \{0,3\}!\=\[" end="\]:" oneline keepend nextgroup=markdownUrl skipwhite
let s:concealends = ''
if has('conceal') && get(g:, 'markdown_syntax_conceal', 1) == 1
@@ -155,6 +156,7 @@ hi def link markdownLinkText htmlLink
hi def link markdownIdDeclaration Typedef
hi def link markdownId Type
hi def link markdownAutomaticLink markdownUrl
hi def link markdownShortcutLink markdownId
hi def link markdownUrl Float
hi def link markdownUrlTitle String
hi def link markdownIdDelimiter markdownLinkDelimiter