Hi, thank you for the review! I'd like to help, but I don't really know how to avoid this problem. Because, when you press alt-number it switches tabs immediately and it's not clear how to determine if user's intention was to write a special character... Maybe I can try not to handle alt+0xxx at all, then it will be possible to enter the ascii chars which code starts with 0.

Update:
Added a command (ctrl+alt+0) to toggle alt+num hotkeys. So, typing a special character will look like: ctrl+alt+0, alt+xxx, ctrl+alt+0. Unfortunately, this is the best solution I could find...