A tool for operating on your git index, without stashing. It is common to want to commit only part of your working directory, but also be sure that each commit will compile if checked out, or has correctly formatted code. This tool checks out your current index to a temporary directory (stable for each unique git working dir PWD) and runs a shell snippet in it. It then takes any changes that command made, and applies them to the index.
*Hint: the 'index' is also known as the staging area. It's where the
