When editing strings that contain a dot (eg a filename), poide tries to display completion list and emits a beep.
I think that autocompletion should be disabled when editing something bewtween double quotes (string const).
Yes, it's a known problem. Since it's possible to move the caret, and just type a dot, I need a way of (quickly) establishing a context - this is not so easy...
I will look at it - but since it's somewhat hard, and a bit cosmetic, we'll see...