In 4.1 beta 1 (not available in the version list here), I cannot use ^H for backspace anymore (this used to work in 3.5.9, which makes this a regression). ^W has never worked AFAIR, but would be nice either way.
This actually appears to be a Qt regression from 3.x to 4.x, wrt. ^H. If anyone more knowledgeable of how this works in Qt could forward, I'd be grateful. Thanks.
^W (Ctrl+W) is already used to close the current document in most KDE apps, so it is not a good idea to make it erase the last word. But it would be nice to have ^U to erase the current line when typing in a simple TextBox.
How come? Application shortcuts take precedence, so I don't think that is a problem, really.