nsSpecialSystemDirectory should support something like: Mac_SystemPluginsDirectory ...and... Mac_UserPluginsDirectory

What are they used for? Why should it support those? What are the issues? Can any Mac people who know about what this is about be involved? Thanks.

Adding things to nsSpecialSystemDirectory is the wrong direction, although the intention is right. The reason is that nsSpecialSystemDirectory should not be used. Instead nsIDirectoryService should. See bug 77231. These locations should be added to nsDirectoryService. As far as the locations: Mac_SystemPluginsDirectory - Is the idea of system-wide plug-ins only Mac? Could this be XP? Mac_UserPluginsDirectory - This is OS X specific. It is a location, in the domain of the current user, where plug-ins may be kept which are shared by many applications. Does this apply on other platforms as well?

marking wontfix based on comments, even though it is probably a dup of conrads bug.