How do I make Git use the editor of my choice for commits?

Question

I would prefer to write my commit messages in Vim, but it is opening them in Emacs.

How do I configure Git to always use Vim? Note that I want to do this globally,

Answer 1

Setting Sublime Text 2 as Git commit editor in Mac OSX 10

Run this command:

$ git config --global core.editor "/Applications/Sublime\ Text\ 2.app/Contents/SharedSupport/bin/subl"

Or just:

$ git config --global core.editor "subl -w"