id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
20017,Reduce memory usage in kses.php,duck_,duck_,"Our allowed attributes rules in kses.php create a large number of empty arrays. These can all be replaced with `true` instead. This reduces memory usage by 62 kilobytes - not huge, but it all adds up.

This change is possible because the arrays are only used for attribute value checks, see wp_kses_attr(). Anything other than array just indicates that the attribute is allowed, see kses README and docs/attribute-value-checks for examples.

The block that filters style attributes with safecss_filter_attr() has to be moved out of the is_array() check to accommodate for this.",defect (bug),closed,normal,3.4,Performance,,normal,fixed,has-patch needs-testing,