Make auto-complete more context-aware of the text around it

This bug title is a bit vague, but I can give a concrete example of something that gets a bit annoying for me, that it would be great if Qt Creator could improve on:

Often when connecting up SIGNALs and SLOTs, I'll copy-and-paste the connect() function from another line, then try and edit the SIGNAL and SLOT functions.

I do this by double-clicking the name of the function, which selects the text up to the first "(".
I then start typing for the new function, which is fine, but when I accept the auto-completion, Qt Creator puts "()" after it, even though there already is a "()" after the previous one, so now I have to delete one of them.

It actually seems that Qt Creator inserts them in the wrong place anyway, making deleting one of them more confusing:

for example, the end result I get is:
connect(, , , SLOT(normaliseUVs())()));

when I would expect to get:
connect(, , , SLOT(normaliseUVs()()));

BUT, it would be nice if I could just get:
connect(, , , SLOT(normaliseUVs()));

It would be nice if Qt Creator could detect this, and not both putting a superfluous "()" on the end of an auto-complete replacement.