Is it possible to map a vim command to a combination of keys involving more than one modifier? For example: ctrl-alt-v.
As far as I can tell, the only modifier key that can be used in combination with another is shift. e.g. <C-v> and <C-V>. Or am I missing something?
Yeah, you would map
<C-A-v>or<C-M-v>(A, Alt, and M, Meta are equivalent concepts). See:help key-notation.