"end" completion if unique

How can I achieve this behavior? Probably this only applies for complete_while_typing=True.

Usually, while the completion is not unique, the list of completions is shown. If I type something more that list is updated to show the now-matching completions.

This is all great. :)

However, if what I've typed (so far) only has a single completion (i.e. it's unique) - and I press TAB - I want that completion to be filled in and the completion list to go away.

I can't seem to find any "end completion" function, or something like that...?

Additionally I'd like a to a space after the completion to be inserted, but that's a grammar-specific thing. Similar to a shell when completing a unique file name. Thus, pressing TAB directly afterwards it would show completions for the next grammatical item (whatever that may be).

I'm using 2.0, bleeding edge :)

Start by tracing the completion handling used when complete_while_typing=True; the issue names no file, entry point, or test. Done means a unique completion can be accepted with TAB, the list closes, and the requested grammar-specific spacing behavior has a defined outcome.