CodeMirror 6 - back to development

Hi all,

I’m currently making more configuration options runtime-updatable.
Now switching the tiddler type doesn’t fully refresh the editor anymore.
There’s a new Editor-Toolbar button to enable / disable indentWithTab (which is also configurable in runtime)
Plus a keyboard shortcut ctrl-Tab but I now realize that that’s used in Browsers to switch Tabs … XD
So, what would be a good kb shortcut to enable / disable indenting with Tab?

Thanks a lot,
Simon