How can I duplicate a Firefox tab including the history with a keyboard shortcut?
Solution 1:
I have installed Tab Mix Plus v0.3.8.4 Add-ons on Firefox 9 and pressing Ctrl + Alt + T duplicates the current tab with tab's full history.
It should work on Firefox 13 too.
Solution 2:
Not a full keyboard shortcut, but if you hold Ctrl and drag the tab to a new position on the tab bar it will duplicate the tab, with history.
Solution 3:
Not a full keyboard shortcut, but middle-clicking on the refresh button next to the url address bar copies the current tab along with its history.