I was looking at dotfiles on GitHub for something completely unrelated, and noticed this snippet by Gianni Chiappetta:
" Remap :W to :w command W w
This will help when
:W is accidentally typed instead of
:w and Vim displays
E492: Not an editor command: W. I occasionally do this when I'm making a lot of rapid changes and my finger lingers on the shift key.
Creating an alias with
:com for short) will result in something slightly different to the real
:w though, because it won't copy the arguments. Ingo Karkat posted a response to a Stack Overflow question about the same problem: Is there a way in vim to make :W to do the same thing as :w?.
But I think for your use case it's best to define your own uppercase command-variants. The main challenge is to support all the options that the original one has:
command! -bang -range=% -complete=file -nargs=* W <line1>,<line2>write<bang> <args>
command! -bang Q quit<bang>
command to replace any existing mappings.
Although the simpler mapping will suffice for the more command mistake of hitting
:W, it's interesting how far you can take a simple question about Vim configuration.