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Lines which start with '-' are needed in foldexpr
[etc/vim.git] / syntax / markdown.vim
1 " Vim syntax file
2 " Language:     Markdown
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)
7
8
9 " Read the HTML syntax to start with
10 if version < 600
11   so <sfile>:p:h/html.vim
12 else
13   runtime! syntax/html.vim
14
15   if exists('b:current_syntax')
16     unlet b:current_syntax
17   endif
18 endif
19
20 if version < 600
21   syntax clear
22 elseif exists("b:current_syntax")
23   finish
24 endif
25
26 " don't use standard HiLink, it will not work with included syntax files
27 if version < 508
28   command! -nargs=+ HtmlHiLink hi link <args>
29 else
30   command! -nargs=+ HtmlHiLink hi def link <args>
31 endif
32
33 syn spell toplevel
34 syn case ignore
35 syn sync linebreaks=1
36
37 "additions to HTML groups
38 syn region htmlItalic start="\\\@<!\*\S\@=" end="\S\@<=\\\@<!\*" keepend oneline
39 syn region htmlItalic start="\(^\|\s\)\@<=_\|\\\@<!_\([^_]\+\s\)\@=" end="\S\@<=_\|_\S\@=" keepend oneline
40 syn region htmlBold start="\S\@<=\*\*\|\*\*\S\@=" end="\S\@<=\*\*\|\*\*\S\@=" keepend oneline
41 syn region htmlBold start="\S\@<=__\|__\S\@=" end="\S\@<=__\|__\S\@=" keepend oneline
42 syn region htmlBoldItalic start="\S\@<=\*\*\*\|\*\*\*\S\@=" end="\S\@<=\*\*\*\|\*\*\*\S\@=" keepend oneline
43 syn region htmlBoldItalic start="\S\@<=___\|___\S\@=" end="\S\@<=___\|___\S\@=" keepend oneline
44
45 " [link](URL) | [link][id] | [link][]
46 syn region mkdFootnotes matchgroup=mkdDelimiter start="\[^"    end="\]"
47 syn region mkdID matchgroup=mkdDelimiter        start="\["    end="\]" contained oneline
48 syn region mkdURL matchgroup=mkdDelimiter       start="("     end=")"  contained oneline
49 syn region mkdLink matchgroup=mkdDelimiter      start="\\\@<!\[" end="\]\ze\s*[[(]" contains=@Spell nextgroup=mkdURL,mkdID skipwhite oneline
50
51 " Autolink without angle brackets.
52 " mkd  inline links:           protocol   optional  user:pass@       sub/domain                 .com, .co.uk, etc      optional port   path/querystring/hash fragment
53 "                            ------------ _____________________ --------------------------- ________________________ ----------------- __
54 syntax match   mkdInlineURL /https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?\S*/
55
56 " Autolink with angle brackets.
57 syn region mkdInlineURL matchgroup=mkdDelimiter start="\\\@<!<\(\(coap\|doi\|javascript\|aaa\|aaas\|about\|acap\|cap\|cid\|crid\|data\|dav\|dict\|dns\|file\|ftp\|geo\|go\|gopher\|h323\|http\|https\|iax\|icap\|im\|imap\|info\|ipp\|iris\|iris.beep\|iris.xpc\|iris.xpcs\|iris.lwz\|ldap\|mailto\|mid\|msrp\|msrps\|mtqp\|mupdate\|news\|nfs\|ni\|nih\|nntp\|opaquelocktoken\|pop\|pres\|rtsp\|service\|session\|shttp\|sieve\|sip\|sips\|sms\|snmp,soap.beep\|soap.beeps\|tag\|tel\|telnet\|tftp\|thismessage\|tn3270\|tip\|tv\|urn\|vemmi\|ws\|wss\|xcon\|xcon-userid\|xmlrpc.beep\|xmlrpc.beeps\|xmpp\|z39.50r\|z39.50s\|adiumxtra\|afp\|afs\|aim\|apt,attachment\|aw\|beshare\|bitcoin\|bolo\|callto\|chrome,chrome-extension\|com-eventbrite-attendee\|content\|cvs,dlna-playsingle\|dlna-playcontainer\|dtn\|dvb\|ed2k\|facetime\|feed\|finger\|fish\|gg\|git\|gizmoproject\|gtalk\|hcp\|icon\|ipn\|irc\|irc6\|ircs\|itms\|jar\|jms\|keyparc\|lastfm\|ldaps\|magnet\|maps\|market,message\|mms\|ms-help\|msnim\|mumble\|mvn\|notes\|oid\|palm\|paparazzi\|platform\|proxy\|psyc\|query\|res\|resource\|rmi\|rsync\|rtmp\|secondlife\|sftp\|sgn\|skype\|smb\|soldat\|spotify\|ssh\|steam\|svn\|teamspeak\|things\|udp\|unreal\|ut2004\|ventrilo\|view-source\|webcal\|wtai\|wyciwyg\|xfire\|xri\|ymsgr\):\/\/[^> ]*>\)\@=" end=">"
58
59 " Link definitions: [id]: URL (Optional Title)
60 syn region mkdLinkDef matchgroup=mkdDelimiter   start="^ \{,3}\zs\[" end="]:" oneline nextgroup=mkdLinkDefTarget skipwhite
61 syn region mkdLinkDefTarget start="<\?\zs\S" excludenl end="\ze[>[:space:]\n]"   contained nextgroup=mkdLinkTitle,mkdLinkDef skipwhite skipnl oneline
62 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+"+     end=+"+  contained
63 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+'+     end=+'+  contained
64 syn region mkdLinkTitle matchgroup=mkdDelimiter start=+(+     end=+)+  contained
65
66 "define Markdown groups
67 syn match  mkdLineContinue ".$" contained
68 syn match  mkdLineBreak    /  \+$/
69 syn region mkdBlockquote   start=/^\s*>/                   end=/$/ contains=mkdLineBreak,mkdLineContinue,@Spell
70 syn region mkdCode         start=/\(\([^\\]\|^\)\\\)\@<!`/ end=/\(\([^\\]\|^\)\\\)\@<!`/
71 syn region mkdCode         start=/\s*``[^`]*/              end=/[^`]*``\s*/
72 syn region mkdCode         start=/^\s*```\s*[0-9A-Za-z_-]*\s*$/          end=/^\s*```\s*$/
73 syn region mkdCode         start=/\s*\~\~[^\~]*/              end=/[^\~]*\~\~\s*/
74 syn region mkdCode         start=/^\s*\~\~\~\s*[0-9A-Za-z_-]*\s*$/          end=/^\s*\~\~\~\s*$/
75 syn region mkdCode         start="<pre[^>]*>"              end="</pre>"
76 syn region mkdCode         start="<code[^>]*>"             end="</code>"
77 syn region mkdFootnote     start="\[^"                     end="\]"
78 syn match  mkdCode         /^\s*\n\(\(\s\{8,}[^ ]\|\t\t\+[^\t]\).*\n\)\+/
79 syn match  mkdIndentCode   /^\s*\n\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/ contained
80 syn match  mkdListItem     "^\s*[-*+]\s\+"
81 syn match  mkdListItem     "^\s*\d\+\.\s\+"
82 syn region mkdNonListItemBlock start="\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem,@Spell
83 syn match  mkdRule         /^\s*\*\s\{0,1}\*\s\{0,1}\*$/
84 syn match  mkdRule         /^\s*-\s\{0,1}-\s\{0,1}-$/
85 syn match  mkdRule         /^\s*_\s\{0,1}_\s\{0,1}_$/
86 syn match  mkdRule         /^\s*-\{3,}$/
87 syn match  mkdRule         /^\s*\*\{3,5}$/
88
89 "HTML headings
90 syn region htmlH1       start="^\s*#"                   end="\($\|#\+\)" contains=@Spell
91 syn region htmlH2       start="^\s*##"                  end="\($\|#\+\)" contains=@Spell
92 syn region htmlH3       start="^\s*###"                 end="\($\|#\+\)" contains=@Spell
93 syn region htmlH4       start="^\s*####"                end="\($\|#\+\)" contains=@Spell
94 syn region htmlH5       start="^\s*#####"               end="\($\|#\+\)" contains=@Spell
95 syn region htmlH6       start="^\s*######"              end="\($\|#\+\)" contains=@Spell
96 syn match  htmlH1       /^.\+\n=\+$/ contains=@Spell
97 syn match  htmlH2       /^.\+\n-\+$/ contains=@Spell
98
99 if get(g:, 'vim_markdown_math', 0)
100   syn region mkdMath matchgroup=mkdDelimiter start="\\\@<!\$" end="\$"
101   syn region mkdMath matchgroup=mkdDelimiter start="\\\@<!\$\$" end="\$\$"
102 endif
103
104 " YAML frontmatter
105 if get(g:, 'vim_markdown_frontmatter', 0)
106   syn include @yamlTop syntax/yaml.vim
107   syn region Comment matchgroup=mkdDelimiter start="\%^---$" end="^---$" contains=@yamlTop
108 endif
109
110 syn cluster mkdNonListItem contains=htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdInlineURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdIndentCode,mkdListItem,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,mkdMath
111
112 "highlighting for Markdown groups
113 HtmlHiLink mkdString        String
114 HtmlHiLink mkdCode          String
115 HtmlHiLink mkdIndentCode    String
116 HtmlHiLink mkdFootnote    Comment
117 HtmlHiLink mkdBlockquote    Comment
118 HtmlHiLink mkdLineContinue  Comment
119 HtmlHiLink mkdListItem      Identifier
120 HtmlHiLink mkdRule          Identifier
121 HtmlHiLink mkdLineBreak     Todo
122 HtmlHiLink mkdFootnotes     htmlLink
123 HtmlHiLink mkdLink          htmlLink
124 HtmlHiLink mkdURL           htmlString
125 HtmlHiLink mkdInlineURL     htmlLink
126 HtmlHiLink mkdID            Identifier
127 HtmlHiLink mkdLinkDef       mkdID
128 HtmlHiLink mkdLinkDefTarget mkdURL
129 HtmlHiLink mkdLinkTitle     htmlString
130 HtmlHiLink mkdMath          Statement
131 HtmlHiLink mkdDelimiter     Delimiter
132
133 let b:current_syntax = "mkd"
134
135 delcommand HtmlHiLink
136 " vim: ts=8