Created attachment 400229 [details] [diff] [review] fixes bug in GetFromTypeAndExtension() [Checkin: Comment 1 & 4] With certain plugins installed, the list of MIME types & handlers in Firefox's Options->Applications dialog is empty. The cause is a coding error in nsExternalHelperAppService::GetFromTypeAndExtension(). This method should always return NS_OK unless the call to its parent class's method fails. However in some circumstances, the variable containing this result ('rv') may get changed by the failure of another non-critical call. When the method returns this spurious error, the calling code aborts its attempt to list the handlers. With the attached patch installed, the method explicitly returns NS_OK where appropriate. FYI... once the code is fixed, the listing will include a few MIME types supported by the GBM & mplayer plugins (e.g. GIF & OGG). These are the entries that triggered the bug.
http://hg.mozilla.org/mozilla-central/rev/b338c37ecb00 Should this go onto the 1.9.2 branch, too? How about 1.9.1?
Well applying Rich's patch on Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:18.104.22.168pre) Gecko/20090925 SeaMonkey/2.0pre fixed the empty handlers in applications. Much nicer application page too. The patch applied cleanly on the above.
(In reply to comment #1) > Should this go onto the 1.9.2 branch, too? How about 1.9.1? Yes, please.
Comment on attachment 400229 [details] [diff] [review] fixes bug in GetFromTypeAndExtension() [Checkin: Comment 1 & 4] http://hg.mozilla.org/releases/mozilla-1.9.2/rev/66470208b6a6 http://hg.mozilla.org/releases/mozilla-1.9.1/rev/d17ee097dc09