Comment 1 for bug 171983

This patch done against SVN as of 1 March 2009.

I've put in a draft of a quick-n-dirty filter that optimizes some known defaults out of the style="" attributes. This is done only at the final saving time. It can be made smarter by working against a known SVG schema version number, in case any schema specifies different default style values.

Only style="" attributes are filtered. If stroke:none, don't save any stroke-X:Y parts. Same with fill:none and marker:none. Other known defaults are skipped based on a short list hardcoded into the function for now.

I get about 25% savings on file size on a path-heavy SVG file. Let me know [ e d @ h a l l e y . c c ] if there are any problems.