Remapping "Y" in vim

Question

The copy-paste functions in vim seem a bit inconsistent to me. The commands yy, dd and cc yank/delete the whole line. The commands D and C delete from the cursor to the end of line, but Y yanks the whole line instead. I want Y to work the same as D and C. So I put the following line in my .vimrc:

nmap Y y$

It doesn't seem to work though. My first idea was that it is because of some plugin interfering. I tried to put the command to both the beginning and the end of my .vimrc, but nothing helped. However, if I type the command manually (not from .vimrc), it works. Why is this? How do I make this work?

Answer 1

Your vimrc is loaded before plugins are loaded, so this doesn't rule out that a plugin is overriding it. Placing .vim files in .vim/after/ will be loaded after plugins so you could test that theory that way if you want to avoid the route of removing your plugins one-by-one.

As mentioned by Kent, you should really consider using nnoremap over nmap.

Answer 2

Pasting a new answer as code is not formatted in the comment of the answer above.

If the conflict is YankRing you can use:

function! YRRunAfterMaps()
    nnoremap Y   :<C-U>YRYankCount 'y$'<CR>
endfunction
nnoremap Y y$

source: :help yankring-custom-maps