Add LateX $ and $$ math support.

[etc/vim.git] / syntax / mkd.vim

diff --git a/syntax/mkd.vim b/syntax/mkd.vim
index 575466be58fee41f64e46203fd369881ab97e457..19d59d56ab230ea54dcb3e12ec7b30ccb783ca82 100644 (file)
--- a/syntax/mkd.vim
+++ b/syntax/mkd.vim
@@ -15,7 +15,10 @@ if version < 600
   so <sfile>:p:h/html.vim
 else
   runtime! syntax/html.vim
-  unlet b:current_syntax
+
+  if exists('b:current_syntax')
+    unlet b:current_syntax
+  endif
 endif
 
 if version < 600
@@ -66,7 +69,7 @@ syn match  mkdLineBreak    /  \+$/
 syn region mkdBlockquote   start=/^\s*>/                   end=/$/ contains=mkdLineBreak,mkdLineContinue,@Spell
 syn region mkdCode         start=/\(\([^\\]\|^\)\\\)\@<!`/ end=/\(\([^\\]\|^\)\\\)\@<!`/
 syn region mkdCode         start=/\s*``[^`]*/              end=/[^`]*``\s*/
-syn region mkdCode         start=/^```\s*\w*\s*$/          end=/^```\s*$/
+syn region mkdCode         start=/^\s*```\s*[0-9A-Za-z_-]*\s*$/          end=/^\s*```\s*$/
 syn region mkdCode         start="<pre[^>]*>"              end="</pre>"
 syn region mkdCode         start="<code[^>]*>"             end="</code>"
 syn region mkdFootnote     start="\[^"                     end="\]"
@@ -74,7 +77,7 @@ syn match  mkdCode         /^\s*\n\(\(\s\{8,}[^ ]\|\t\t\+[^\t]\).*\n\)\+/
 syn match  mkdIndentCode   /^\s*\n\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/ contained
 syn match  mkdListItem     "^\s*[-*+]\s\+"
 syn match  mkdListItem     "^\s*\d\+\.\s\+"
-syn region mkdNonListItemBlock start="\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem
+syn region mkdNonListItemBlock start="\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem,@Spell
 syn match  mkdRule         /^\s*\*\s\{0,1}\*\s\{0,1}\*$/
 syn match  mkdRule         /^\s*-\s\{0,1}-\s\{0,1}-$/
 syn match  mkdRule         /^\s*_\s\{0,1}_\s\{0,1}_$/
@@ -91,7 +94,12 @@ syn region htmlH6       start="^\s*######"              end="\($\|#\+\)" contain
 syn match  htmlH1       /^.\+\n=\+$/ contains=@Spell
 syn match  htmlH2       /^.\+\n-\+$/ contains=@Spell
 
-syn cluster mkdNonListItem contains=htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdID,mkdURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdIndentCode,mkdListItem,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6
+if get(g:, 'vim_markdown_math', 0)
+  syn region mkdMath matchgroup=mkdDelimiter start="\\\@<!\$" end="\$"
+  syn region mkdMath matchgroup=mkdDelimiter start="\\\@<!\$\$" end="\$\$"
+endif
+
+syn cluster mkdNonListItem contains=htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdID,mkdURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdMath,mkdIndentCode,mkdListItem,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6
 
 "highlighting for Markdown groups
 HtmlHiLink mkdString       String
@@ -111,14 +119,19 @@ HtmlHiLink mkdID            Identifier
 HtmlHiLink mkdLinkDef       mkdID
 HtmlHiLink mkdLinkDefTarget mkdURL
 HtmlHiLink mkdLinkTitle     htmlString
-
+HtmlHiLink mkdMath          Statement
 HtmlHiLink mkdDelimiter     Delimiter
 
 " Automatically insert bullets
 setlocal formatoptions+=r
+" Do not automatically insert bullets when auto-wrapping with text-width
+setlocal formatoptions-=c
 " Accept various markers as bullets
 setlocal comments=b:*,b:+,b:-
 
+" Automatically continue blockquote on line break
+setlocal comments+=b:>
+
 let b:current_syntax = "mkd"
 
 delcommand HtmlHiLink