I just upgraded to Firefox 4 and can't seem to find a feature I used quite often:
If I accidentally close a tab, I could right-click and select an option to reopen the closed tab.
Where is this feature in Firefox 4?
Right-click on an existing tab and select Undo Close Tab
.
The keyboard shortcut is the same: Ctrl + Shift + T. (Mac OS X it's ⌘ + Shift + T.)
Ctrl
+ Shift
+ T
doesn't work on Firefox 29. I guess they have changed this shortcut.
If I click the "Firefox" button I can still navigate to History > Recently Closed Tabs.
Al Everett is correct. If you are looking for the shortcut in a Mac OS X system, it's command + shift + T
I personally use an add-on called Tab Mix Plus. Among other things, it allows you to restore tabs by showing a "recently closed tabs" list when you right-click the tab bar.
Rather than a shortcut you might want to use a button. In this case you need an add-on. As it has already been mentioned there is "Tab Mix Plus", which has this feature. Additionally here are other Firefox add-ons with such a button:
I also use Ctrl + F12, but can't work out if it's a Firefox standard or from an add-on.