When I work with Vim I almost never look at my keyboard (like it should be!) and this is great, but sometimes, unknowingly I hit the CapsLock key and causes me to yell at my screen.
Because, you know,
j is not the same as
J in normal mode (and so on).
So instead or mapping
CapsLock to say
Ctrl I want to display an error message that will warn me in normal mode if this is the case.
Is there a way for Vim to tell if you have
Note: I prefer a VimScript/VimL solution for portability and because I want Vim to notify me and not depend on the actual system.