I never ever thought about this, but it does make sense. In any case, I've always used normalized signal/slot names simply because I usually autocomplete them in QtCreator and it uses normalized ones.

Having said that, I don't really dynamically change the signals/slots after setup, so the performance penalty would result in a slightly slower application startup and not affect runtime performance (unless similar normalization must happen at runtime too? I did not check).

I seem to remember Qt Creator does add const and & symbols, not sure though, and cannot check at the moment.

Nope, it adds just the function and parameter types.

Then all my code is OK by default, thanks :)