It's a great idea, but it captures the Tab key completely. That is, within the shell you can't switch through your browser tabs via Ctrl+Tab or Ctrl+Shift+Tab.

It's a great idea, but it captures the Tab key completely. That is, within the shell you can't switch through your browser tabs via Ctrl+Tab or Ctrl+Shift+Tab. (Maybe this is the fault of Firefox. Why should it grant any web application the right to redefine essential browser navigation keystrokes?)