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3 " Maintainer: Ben Williams <benw@plasticboy.com>
4 " URL: http://plasticboy.com/markdown-vim-mode/
5 " Remark: Uses HTML syntax file
6 " TODO: Handle stuff contained within stuff (e.g. headings within blockquotes)
9 " Read the HTML syntax to start with
11 so <sfile>:p:h/html.vim
13 runtime! syntax/html.vim
15 if exists('b:current_syntax')
16 unlet b:current_syntax
22 elseif exists("b:current_syntax")
26 " don't use standard HiLink, it will not work with included syntax files
28 command! -nargs=+ HtmlHiLink hi link <args>
30 command! -nargs=+ HtmlHiLink hi def link <args>
38 let s:concealends = ''
39 if has('conceal') && get(g:, 'vim_markdown_conceal', 1)
40 let s:conceal = ' conceal'
41 let s:concealends = ' concealends'
44 " additions to HTML groups
45 if get(g:, 'vim_markdown_emphasis_multiline', 1)
48 let s:oneline = ' oneline'
50 syn region mkdItalic matchgroup=mkdItalic start="\%(\*\|_\)" end="\%(\*\|_\)"
51 syn region mkdBold matchgroup=mkdBold start="\%(\*\*\|__\)" end="\%(\*\*\|__\)"
52 syn region mkdBoldItalic matchgroup=mkdBoldItalic start="\%(\*\*\*\|___\)" end="\%(\*\*\*\|___\)"
53 execute 'syn region htmlItalic matchgroup=mkdItalic start="\%(^\|\s\)\zs\*\ze[^\\\*\t ]\%(\%([^*]\|\\\*\|\n\)*[^\\\*\t ]\)\?\*\_W" end="[^\\\*\t ]\zs\*\ze\_W" keepend contains=@Spell' . s:oneline . s:concealends
54 execute 'syn region htmlItalic matchgroup=mkdItalic start="\%(^\|\s\)\zs_\ze[^\\_\t ]" end="[^\\_\t ]\zs_\ze\_W" keepend contains=@Spell' . s:oneline . s:concealends
55 execute 'syn region htmlBold matchgroup=mkdBold start="\%(^\|\s\)\zs\*\*\ze\S" end="\S\zs\*\*" keepend contains=@Spell' . s:oneline . s:concealends
56 execute 'syn region htmlBold matchgroup=mkdBold start="\%(^\|\s\)\zs__\ze\S" end="\S\zs__" keepend contains=@Spell' . s:oneline . s:concealends
57 execute 'syn region htmlBoldItalic matchgroup=mkdBoldItalic start="\%(^\|\s\)\zs\*\*\*\ze\S" end="\S\zs\*\*\*" keepend contains=@Spell' . s:oneline . s:concealends
58 execute 'syn region htmlBoldItalic matchgroup=mkdBoldItalic start="\%(^\|\s\)\zs___\ze\S" end="\S\zs___" keepend contains=@Spell' . s:oneline . s:concealends
60 " [link](URL) | [link][id] | [link][] | ![image](URL)
61 syn region mkdFootnotes matchgroup=mkdDelimiter start="\[^" end="\]"
62 execute 'syn region mkdID matchgroup=mkdDelimiter start="\[" end="\]" contained oneline' . s:conceal
63 execute 'syn region mkdURL matchgroup=mkdDelimiter start="(" end=")" contained oneline' . s:conceal
64 execute 'syn region mkdLink matchgroup=mkdDelimiter start="\\\@<!!\?\[\ze[^]\n]*\n\?[^]\n]*\][[(]" end="\]" contains=@mkdNonListItem,@Spell nextgroup=mkdURL,mkdID skipwhite' . s:concealends
66 " Autolink without angle brackets.
67 " mkd inline links: protocol optional user:pass@ sub/domain .com, .co.uk, etc optional port path/querystring/hash fragment
68 " ------------ _____________________ ----------------------------- _________________________ ----------------- __
69 syn match mkdInlineURL /https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z0-9][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?\S*/
71 " Autolink with parenthesis.
72 syn region mkdInlineURL matchgroup=mkdDelimiter start="(\(https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z0-9][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?\S*)\)\@=" end=")"
74 " Autolink with angle brackets.
75 syn region mkdInlineURL matchgroup=mkdDelimiter start="\\\@<!<\ze[a-z][a-z0-9,.-]\{1,22}:\/\/[^> ]*>" end=">"
77 " Link definitions: [id]: URL (Optional Title)
78 syn region mkdLinkDef matchgroup=mkdDelimiter start="^ \{,3}\zs\[" end="]:" oneline nextgroup=mkdLinkDefTarget skipwhite
79 syn region mkdLinkDefTarget start="<\?\zs\S" excludenl end="\ze[>[:space:]\n]" contained nextgroup=mkdLinkTitle,mkdLinkDef skipwhite skipnl oneline
80 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+"+ end=+"+ contained
81 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+'+ end=+'+ contained
82 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+(+ end=+)+ contained
85 syn region htmlH1 start="^\s*#" end="$" contains=mkdLink,mkdInlineURL,@Spell
86 syn region htmlH2 start="^\s*##" end="$" contains=mkdLink,mkdInlineURL,@Spell
87 syn region htmlH3 start="^\s*###" end="$" contains=mkdLink,mkdInlineURL,@Spell
88 syn region htmlH4 start="^\s*####" end="$" contains=mkdLink,mkdInlineURL,@Spell
89 syn region htmlH5 start="^\s*#####" end="$" contains=mkdLink,mkdInlineURL,@Spell
90 syn region htmlH6 start="^\s*######" end="$" contains=mkdLink,mkdInlineURL,@Spell
91 syn match htmlH1 /^.\+\n=\+$/ contains=mkdLink,mkdInlineURL,@Spell
92 syn match htmlH2 /^.\+\n-\+$/ contains=mkdLink,mkdInlineURL,@Spell
94 "define Markdown groups
95 syn match mkdLineBreak / \+$/
96 syn region mkdBlockquote start=/^\s*>/ end=/$/ contains=mkdLink,mkdInlineURL,mkdLineBreak,@Spell
97 syn region mkdCode start=/\(\([^\\]\|^\)\\\)\@<!`/ end=/\(\([^\\]\|^\)\\\)\@<!`/
98 syn region mkdCode start=/\s*``[^`]*/ end=/[^`]*``\s*/
99 syn region mkdCode start=/^\s*\z(`\{3,}\)[^`]*$/ end=/^\s*\z1`*\s*$/
100 syn region mkdCode start=/\s*\~\~[^\~]*/ end=/[^\~]*\~\~\s*/
101 syn region mkdCode start=/^\s*\z(\~\{3,}\)\s*[0-9A-Za-z_+-]*\s*$/ end=/^\s*\z1\~*\s*$/
102 syn region mkdCode start="<pre[^>]*\\\@<!>" end="</pre>"
103 syn region mkdCode start="<code[^>]*\\\@<!>" end="</code>"
104 syn region mkdFootnote start="\[^" end="\]"
105 syn match mkdCode /^\s*\n\(\(\s\{8,}[^ ]\|\t\t\+[^\t]\).*\n\)\+/
106 syn match mkdCode /\%^\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/
107 syn match mkdCode /^\s*\n\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/ contained
108 syn match mkdListItem /^\s*\%([-*+]\|\d\+\.\)\ze\s\+/ contained
109 syn region mkdListItemLine start="^\s*\%([-*+]\|\d\+\.\)\s\+" end="$" oneline contains=@mkdNonListItem,mkdListItem,@Spell
110 syn region mkdNonListItemBlock start="\(\%^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@!\|\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!\)" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem,@Spell
111 syn match mkdRule /^\s*\*\s\{0,1}\*\s\{0,1}\*$/
112 syn match mkdRule /^\s*-\s\{0,1}-\s\{0,1}-$/
113 syn match mkdRule /^\s*_\s\{0,1}_\s\{0,1}_$/
114 syn match mkdRule /^\s*-\{3,}$/
115 syn match mkdRule /^\s*\*\{3,5}$/
118 if get(g:, 'vim_markdown_frontmatter', 0)
119 syn include @yamlTop syntax/yaml.vim
120 syn region Comment matchgroup=mkdDelimiter start="\%^---$" end="^---$" contains=@yamlTop keepend
121 unlet! b:current_syntax
124 if get(g:, 'vim_markdown_toml_frontmatter', 0)
126 syn include @tomlTop syntax/toml.vim
127 syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$" transparent contains=@tomlTop keepend
128 unlet! b:current_syntax
130 syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$"
134 if get(g:, 'vim_markdown_json_frontmatter', 0)
136 syn include @jsonTop syntax/json.vim
137 syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$" contains=@jsonTop keepend
138 unlet! b:current_syntax
140 syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$"
144 if get(g:, 'vim_markdown_math', 0)
145 syn include @tex syntax/tex.vim
146 syn region mkdMath start="\\\@<!\$" end="\$" contains=@tex keepend
147 syn region mkdMath start="\\\@<!\$\$" end="\$\$" contains=@tex keepend
150 syn cluster mkdNonListItem contains=@htmlTop,htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdInlineURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,mkdMath
152 "highlighting for Markdown groups
153 HtmlHiLink mkdString String
154 HtmlHiLink mkdCode String
155 HtmlHiLink mkdCodeStart String
156 HtmlHiLink mkdCodeEnd String
157 HtmlHiLink mkdFootnote Comment
158 HtmlHiLink mkdBlockquote Comment
159 HtmlHiLink mkdListItem Identifier
160 HtmlHiLink mkdRule Identifier
161 HtmlHiLink mkdLineBreak Visual
162 HtmlHiLink mkdFootnotes htmlLink
163 HtmlHiLink mkdLink htmlLink
164 HtmlHiLink mkdURL htmlString
165 HtmlHiLink mkdInlineURL htmlLink
166 HtmlHiLink mkdID Identifier
167 HtmlHiLink mkdLinkDef mkdID
168 HtmlHiLink mkdLinkDefTarget mkdURL
169 HtmlHiLink mkdLinkTitle htmlString
170 HtmlHiLink mkdDelimiter Delimiter
172 let b:current_syntax = "mkd"
174 delcommand HtmlHiLink