"*d and now I can't revert it back. I want it to subtract number by 1 like default, but I can't unmap it permanently, it's set to
<C-X> in every new session. I'm sure .vimrc is not mapping it.
:unmap <C-x> can get rid of he mapping (note the variants like
However, it is strange that the mapping persists without being in your
.vimrc. You can use
:verbose map <C-x> to see where the mapping is coming from.