.vimrc function for VimWIki Thunderlink

.vimrc

  function! VimwikiLinkHandler(link)
    " Use Vim to open external files with the 'vfile:' scheme.  E.g.:
    "   1) [[vfile:~/Code/PythonProject/abc123.py]]
    "   2) [[vfile:./|Wiki Home]]
	"   And thunder links https://github.com/poohsen/thunderlink
    let link = a:link
    if link =~# '^thunderlink:'
   	 try
   	   exec "silent !setsid gnome-open \'" . a:link ."\'"
	   exec 'silent !setsid wmctrl -a Thunderbird'
   	   return 1
   	 catch
   	   echo "Thunder link failure!"
   	 endtry
   	 return 0
	endif

    if link =~# '^vfile:'
      let link = link[1:]
    else
      return 0
    endif
    let link_infos = vimwiki#base#resolve_link(link)
    if link_infos.filename == ''
      echomsg 'Vimwiki Error: Unable to resolve link!'
      return 0
    else
      exe 'tabnew ' . fnameescape(link_infos.filename)
      return 1
    endif
  endfunction

This is only a partial .vimrc !