[TextMate][command] W3C validator

[Chris Brierley]

As Justin said, you need to be able to upload the local file via an
HTTP POST.  You can use 'curl' to do this.  The following seems to
work.  It calls curl, collects the results in a temporary file, and
then opens that file.

    curl -o /tmp/`id -u`/results.html -F
uploaded_file=@$TM_FILEPATH\;type=text/html
http://validator.w3.org/check && open /tmp/`id -u`/results.html