but that's the readline shortcuts which are the same no matter which Unix terminal you are using, on macOS, Linux, cygwin, git bash, WSL...

https://github.com/chzyer/readline/blob/master/doc/shortcut....

I don't know if I'm an oddball but I'm switching all day long between Mac, Windows and Linux machines and I'd die if I had to use a different set of terminal shortcuts every time.

The terminal in JetBrains apps is smart enough to know when ctrl-c means copy and when it means abort. It's definitely a solvable problem.

ctrl+shift+c / x / v

Does this work outside of the terminal on linux?

Bingo. This is the trick GP is likely looking for.