How to automatically remove newline at end of yanked linewise visual selection?

Question

Is there any way to yank a linewise visual selection without the newline at the end of the last line of the selection? More specifically, I'd like to be able to copy a line or lines from vim to the system clipboard and paste it elsewhere without the last command being executed without a chance to edit it.

I can get the desired effect by executing this command on the register in question after yanking:

:let @*=substitute(@*,'\n$','','g')

but is there any way to execute that command automatically? I am using MacVim at the moment and there doesn't appear to be a way to map an extra command to ⌘-C, so I'd have to have another mapping to remember to execute after copying if I can't find another solution.

Answer 1

My original answer to myself has been working well enough that I pretty much forgot about it, but now I've decided to set clipboard=unnamed to always yank to the system clipboard. A side effect is that yanking to the clipboard also affects the unnamed register, from which I don't want the trailing newline to be removed.

The new (and more Vim-ish) answer is a mapping to convert the linewise visual selection to characterwise before yanking it:

vnoremap <C-c> <Esc>'<0v'>g_y

Now I copy with <C-c> if I intend to paste in a command line or just y any other time. Pretty much what user Explosion Pills suggested but some added stuff to include the first character of the first line and last of the last line.