[TxMt] Poll. generic code completion plug-in

[Joachim Mårtensson]

>> I guess the completion menu should linger with a message about no
>> completions beeing available. I have not implemented that though.
>
> wouldn't it be better to simply disappear the menu?

At first I thought so as well, but after some thinking I guess it would be
nice to be able to type a wrong char and delete it without having to pop
the menu up again, I think that is the reason why xcode has that
behaviour.

Joachim Mårtensson