On Linux, Control-C and Control-V don't work for copying and pasting in terminals. The Control modifier is used for its original purpose of inserting control codes. Instead, terminal apps require an extra Shift modifier, like Control+Shift+C.
But what if there were hidden shortcut combos for copy and paste
There’s KMonad. Though I tried it once and found it didn’t behave quite like I expected and gave up.
I think that’s a slightly different animal. AFAIK it’s doesn’t switch config depending on the current focused window. E.g. for some programs I don’t want remapping.