How to automatically prepend git commit with a branch name

prepare-commit-msg

#!/bin/bash

# This way you can customize which branches should be skipped when
# prepending commit message. 
if [ -z "$BRANCHES_TO_SKIP" ]; then
  BRANCHES_TO_SKIP=(master develop test)
fi

BRANCH_NAME=$(git symbolic-ref --short HEAD)
#change what you want to grab from the branch
#for aBranch/feature use '/'
#for aBranch-feature use '\-'
BRANCH_NAME="${BRANCH_NAME##*\-}"

BRANCH_EXCLUDED=$(printf "%s\n" "${BRANCHES_TO_SKIP[@]}" | grep -c "^$BRANCH_NAME$")
BRANCH_IN_COMMIT=$(grep -c "\[$BRANCH_NAME\]" $1)

if [ -n "$BRANCH_NAME" ] && ! [[ $BRANCH_EXCLUDED -eq 1 ]] && ! [[ $BRANCH_IN_COMMIT -ge 1 ]]; then 
  sed -i.bak -e "1s/^/[$BRANCH_NAME] /" $1
fi

The hook now accepts branches in the style of
Feature-101 instead of Feature/101

Ex.
git commit -am "I like dragonfruit"

will end up being

[101] I like dragonfruit

If it can't take the path, just change the shabang to
#!C:/Program\ Files/Git/usr/bin/sh.exe

To set the hook on a mac, the file must also be named prepare-commit-msg , and don't forget to update its permissions by running `chmod +x prepare-commit-msg``