Obloq syntax highlighting for vim

gistfile1.vim

" Syntax highlighting for obloq blocks. This is pretty experimental, and I can only get it
" to work with MacVim.app so far (doesn't work with command-line vim). It doesn't yet
" work for every file (not sure why). It's also probably really terrible vimscript.
" 
" Supports:
"    * mustache templates (highlighted as html)
"    * stylus (highlighted as CSS)
"    * javascript (.js and .sjs blocks)
"
" Drop the following into your .vimrc and restart MacVim.app:




"===============================================================================
" Obloq filetype-detection and syntax highlighting
"===============================================================================
au BufNewFile,BufRead *.md set ft=markdown.obloq

" vim syntax regions: http://vimdoc.sourceforge.net/htmldoc/syntax.html
" see also http://vim.wikia.com/wiki/Different_syntax_highlighting_within_regions_of_a_file
" http://vim.wikia.com/wiki/Creating_your_own_syntax_files#Regions
" http://stackoverflow.com/questions/519753/vimembedded-syntax-highligting
function! ObloqSyntax() abort
    exe 'runtime! syntax/markdown.vim'
    exe 'unlet b:current_syntax'

    exe 'syntax include @Html syntax/html.vim'
    exe 'syntax region mustache  start=/^    file: .*\.mustache/ end=/^\#/re=s-1  contains=@Html'
    exe 'unlet b:current_syntax'

    exe 'syntax include @Stylus syntax/css.vim'
    exe 'syntax region stylus    start=/^    file: .*\.stylus/ end=/^\#/re=s-1  contains=@Stylus'
    exe 'unlet b:current_syntax'

    exe 'syntax include @Javascript syntax/javascript.vim'
    exe 'syntax region clientJS  start=/^    file: .*\.js/ end=/^\#/re=s-1  contains=@Javascript'
    exe 'syntax region serverJS  start=/^    file: .*\.sjs/ end=/^\#/re=s-1  contains=@Javascript'
    exe 'unlet b:current_syntax'
endfunction

autocmd FileType markdown.obloq exe "call ObloqSyntax()"