Another way to extract snippets files for vim plugin snipMate

vimrc

"use common-separated names to load multi snippets files for specific file type 
"call LoadSnippets('vim,html') will load vim.snippets and html.snippets

fun! LoadSnippets(p, ft)
    call ResetSnippets(a:ft)
    " always include global snippets
    let snips = split('_,'.a:p, ',')
    for name in snips
        call ExtractSnipsFile(g:snippets_dir . name . '.snippets', a:ft)
    endfor
endfun

"command to load snippets files for current filetype
com! -nargs=1 Snip call LoadSnippets(<f-args>, &ft)