id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
11384,rewrite->flush() needlessly deletes the rewrite_rules option,Denis-de-Bernardy,,"All sorts of cache-related plugins hook into the update_option_rewrite_rules and force-flush whatever they're caching when rewrite_rules are updated.

When a page is saved, WP_Rewrite::flush() mindlessly deletes the rewrite_rule option, triggering all sorts of cache flushing that may or may not be necessary.

The attached patch keeps the rewrite_rules option intact when a soft refresh occurs.

Tests done:

 - non-verbose rules used, page changes parent: no refresh
 - verbose rules used, page changes parent: refresh

Dunno what else needs to be testing...",defect (bug),new,normal,Future Release,Performance,2.9,normal,,has-patch,