jquery/jquery-ui — comment on commit 374661a2ffaaef93f2b679826bc69c0b214b5310
File: ui/jquery.ui.accordion.js line 59
By dmethvin:

Moar ` ; `

The `.toggleClass()` semantics changed a bit over the years; up until I think 1.4 it would toggle all classes ON if any of the classes were there. Now it correctly toggles them independently. Dunno if that affects the code here, depends on whether these values are in sync and which versions of jQuery core you are supporting. http://jsfiddle.net/dmethvin/7GcQ6/