- Upgrade to Firefox 20 or above
- Install Superstop (no restart required)
- Install keyconfig
- Go into keyconfig (keyboard shortcut: Ctrl+Shift+F12)
- Look for "superstop-shortcut" and select it
- Click in the text box where you see "Shift+Esc"
- Press Esc (so don't type it)
- Keyconfig will say "This shortcut is already used by Stop. It might still work, though". This is correct: it does!
- Click OK
- Click Apply
- Click Close
Thanks to this, I'm now using Firefox 21 and I can press Esc to stop animated GIFs again!
I learned this by complaining in this bug on Bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=825486
I would still like to see Mozilla adding an option to Tools > Options or to about
:config so that we can toggle the behavior of Esc from the new way back to the old way, but for now this is definitely good enough for me. I mean, it's a million times better than having to press Shift+Esc which is Superstop's default!