User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:18.104.22.168) Gecko/2008070206 Firefox/3.0.1 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:22.214.171.124) Gecko/2008070206 Firefox/3.0.1 Under Mac OS X, pressed Command-Alt-W should close all of an applications windows (the same as Alt-clicking any window's close button). Firefox does not respond to Command-Alt-W. Reproducible: Always Steps to Reproduce: 1. Open 2 or more windows (and not just browser windows). 2. Press Command-Alt-W Actual Results: A system alert sound is produced, indicating that the keyboard shortcut is not supported by the application. Expected Results: All open windows (including Downloads, Error Console, etc.) should close. See "Keyboard Shortcuts Quick Reference" in Apple's Human Interface Guidlines for reference: http://developer.apple.com/documentation/UserExperience/Conceptual/AppleHIGuidelines/XHIGKeyboardShortcuts/chapter_950_section_1.html#//apple_ref/doc/uid/TP40002725-CHDIGFBH
The developer page you quote is a guideline and is not mandatory but recommended. I think it is simply not implemented in FF as for today, see the list of shortcuts : http://support.mozilla.com/en-US/kb/Keyboard+shortcuts I'm new to testing here but I would suggest modifying the bug to NEW for Enhancement.
Okay, I changed the severity to "enhancement". Given that this keyboard shortcut is supported by the vast majority of quality applications on Mac OS X, I think it's important that FF support it as well.
I think this is a reasonable request (happens on trunk too).