For comun syntax highlight in vim, add the following code to your .vimrc file,
then use :CmnHighlight from vim to highlight a file. To export comun highlight
as HTML you can use the TOHtml vim plugin.

function! CmnHigh()
  syntax match CmnCom /#[^#\n]*[#\n]/
  syntax match CmnStr /"[^"]*"/
  syntax match CmnFun /\(\a\|_\)\w*:/
  syntax match CmnDir /\~\S\+/
  syntax match CmnPtr /\$\S*/
  syntax match CmnCtr /\(!\?@\+'\?\|\(\n\| \)?\( \|\n\|'\)\|;\|!\?\.\)/
  syntax match CmnPre /\[[^\[\]]*\]/

  highlight CmnCom ctermfg=gray
  highlight CmnStr ctermfg=green
  highlight CmnFun ctermfg=yellow
  highlight CmnDir ctermfg=magenta
  highlight CmnPtr ctermfg=brown
  highlight CmnCtr ctermfg=red
  highlight CmnPre ctermfg=blue
endfunction

:command CmnHighlight :call CmnHigh()