fix(blink): improve provider override logic and path completion handling

[sudo-tee]

This should improve #205

[inferst]

Faced with some wrong behavior in the commit.

For example, if I press the spacebar in the middle of a command and then press backspace and continue typing the command, then autocompletion doesn't work.

[sudo-tee]

Faced with some wrong behavior in the commit.

For example, if I press the spacebar in the middle of a command and then press backspace and continue typing the command, then autocompletion doesn't work.

I will have another look,
This is a complex issue as the completion is not opened anymore in this case