new operator for (~t | ~c)

[the/eXtreme]

I have a lot of save-hooks that look like this one:

save-hook '(~t ^mutt-users | ~c ^mutt-users)' =mutt

and I wondered if anyone else thought a new operator
like `~tc' might be convenient, e.g.:

save-hook '~tc ^mutt-users' =mutt