CSSMin doesn't need to generate double rules for IE<8 when embedding SVG files. IE<8 will not load SVG images anyway, so this just wastes space.
This if() in CSSMin.php probably should have a test added for SVG MIME type.
if ( $embedData && $ruleWithEmbedded !== $ruleWithRemapped ) { return "$ruleWithEmbedded;$ruleWithRemapped!ie"; } else { return $ruleWithRemapped; }
Version: 1.24rc
Severity: minor