Could anybody confirm that this is an intended feature of
TextMate and
that there's no way to disable it?
It means you inadvertently enabled “Freehanded Editing”. You can find it in the menu under Edit→Mode, or hit ⌥⌘E to
toggle
it.
Indeed! Thank you! You saved my day. (Incidentally, it's easy to forget that TextMate has more options than those available in the "Settings...") Jasmin