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I've become far too trained to use <C-C> to return to normal mode. I understand there is a difference between <C-C> and <ESC> but that's beside the point of this question.
I use the mapping nnoremap <C-C> <silent> <C-C> so I don't see the message "Type :quit<Enter> to exit vim" when pressing <C-C> in normal mode.
When in normal mode and pressing r I can't cancel with <C-C>, instead it will just insert the non printable character. Is there a way to change this behavior?
First, that
nnoremap <C-C> <silent> <C-C>
has the <silent> parameter in the wrong position; it works, but not the way you think it does (and it beeps). Better use this:
nnoremap <C-C> <Nop>
To avoid the insertion of ^C when aborting r, define a special mapping for that, too:
nnoremap r<C-c> <Nop>
