We need everyone's help in testing external protocol handlers while using the latest branch build in Firefox and Thunderbird, expecially on Mac and Linux. The aim is to find out if we have broken anything while fixing a bug dealing with escaping certain characers such as double quotes, back-ticks, and spaces when calling external protocol handlers.
Bug https://bugzilla.mozilla.org/show_bug.cgi?id=389469 has a list of protocol handlers from sample Windows systems that can be used as a reference for this test.
The types applications and protocol handlers will be different for Mac and Linux, so we are hoping you can help us by testing applications that are intalled in your MacOS X or Linux system, and which are registered to handle the protocols such as the ones listed in the bug above.
For example, if you were to click on a mailto: link, and you had you Mail setup to handle your mail in your Mac, check if clicking on different mailto: links within Firefox will launch the application you would expect.
You can also visit http://wiki.mozilla.org/Firefox:2.0.0.6:Test_Plan for more information, especially comment #49 in bug 389106 for instructions on how to register a protocol handler for an application.