While reviewing some other code, I went in and started ripping up some
of the file type & validity checks in MediaWiki's upload system, as
they've been driving me nuts for some time.
One quick subproject was tossing in an XML well-formedness check for SVG
files. For the curious, here's a report on the invalid files I
encountered while testing this with files from Commons:
http://meta.wikimedia.org/wiki/SVG_validity_checks
-- brion vibber (brion @
wikimedia.org)