Allow colons after language identifiers in fenced code blocks

README.markdown

@@ -1,43 +1,25 @@
 # Vim Markdown runtime files
 
 This is the development version of Vim's included syntax highlighting and
-filetype plugins for Markdown. Generally you don't need to install these if
+filetype plugins for Markdown.  Generally you don't need to install these if
 you are running a recent version of Vim.
 
-## Configuration
-
-### Fenced code block highlighting
-
-To enable fenced code block syntax highlighting in your markdown
-documents, add the following to your `.vimrc`:
+If you want to enable fenced code block syntax highlighting in your markdown
+documents you can enable it in your `.vimrc` like so:
 
     let g:markdown_fenced_languages = ['html', 'python', 'bash=sh']
 
-**Note**: The fenced language names must be valid names of syntax files in vim's
-`syntax` folder. For example: `syntax/ruby.vim`.
-
-### Syntax concealment
-
-To disable markdown syntax concealing, add the following to your `.vimrc`:
+To disable markdown syntax concealing add the following to your vimrc:
 
     let g:markdown_syntax_conceal = 0
 
-### Highlighting synchronization
-
-Syntax highlighting is synchronized in 50 lines. This may cause collapsed
-highlighting on large fenced code blocks.
-In that case, set `g:markdown_minlines` to a larger value in your `.vimrc`:
+Syntax highlight is synchronized in 50 lines. It may cause collapsed
+highlighting at large fenced code block.
+In the case, please set larger value in your vimrc:
 
     let g:markdown_minlines = 100
 
-**Note**: Setting `g:markdown_minlines` to a value that is too large value may
-cause poor highlighting performance.
-
-### Folding
-
-To enable folding, add the following to your `.vimrc`:
-
-    let g:markdown_folding = 1
+Note that setting too large value may cause bad performance on highlighting.
 
 ## License
 

syntax/markdown.vim

@@ -131,8 +131,8 @@ for s:type in g:markdown_fenced_languages
   if has_key(s:done_include, matchstr(s:type,'[^.]*'))
     continue
   endif
-  exe 'syn region markdownHighlight_'.substitute(matchstr(s:type,'[^=]*$'),'\..*','','').' matchgroup=markdownCodeDelimiter start="^\s*\z(`\{3,\}\)\s*\%({.\{-}\.\)\='.matchstr(s:type,'[^=]*').'}\=\S\@!.*$" end="^\s*\z1\ze\s*$" keepend contains=@markdownHighlight_'.tr(matchstr(s:type,'[^=]*$'),'.','_') . s:concealends
-  exe 'syn region markdownHighlight_'.substitute(matchstr(s:type,'[^=]*$'),'\..*','','').' matchgroup=markdownCodeDelimiter start="^\s*\z(\~\{3,\}\)\s*\%({.\{-}\.\)\='.matchstr(s:type,'[^=]*').'}\=\S\@!.*$" end="^\s*\z1\ze\s*$" keepend contains=@markdownHighlight_'.tr(matchstr(s:type,'[^=]*$'),'.','_') . s:concealends
+  exe 'syn region markdownHighlight_'.substitute(matchstr(s:type,'[^=]*$'),'\..*','','').' matchgroup=markdownCodeDelimiter start="^\s*\z(`\{3,\}\)\s*\%({.\{-}\.\)\='.matchstr(s:type,'[^=]*').'}\=[^[:space:]:]\@!.*$" end="^\s*\z1\ze\s*$" keepend contains=@markdownHighlight_'.tr(matchstr(s:type,'[^=]*$'),'.','_') . s:concealends
+  exe 'syn region markdownHighlight_'.substitute(matchstr(s:type,'[^=]*$'),'\..*','','').' matchgroup=markdownCodeDelimiter start="^\s*\z(\~\{3,\}\)\s*\%({.\{-}\.\)\='.matchstr(s:type,'[^=]*').'}\=[^[:space:]:]\@!.*$" end="^\s*\z1\ze\s*$" keepend contains=@markdownHighlight_'.tr(matchstr(s:type,'[^=]*$'),'.','_') . s:concealends
   let s:done_include[matchstr(s:type,'[^.]*')] = 1
 endfor
 unlet! s:type