Vimdiff a File From Another Git Branch

Command to Compare File Against a Different Branch

git difftool staging -- app/FdaDrug.php.php

In this example:

• staging is the branch name
• -- separates branch name from the file to diff
• app\FdaDrug.php is the file to diff

How to Set Vimdiff as Git's Diff Tool

git config --global diff.tool vimdiff