Git hook prepare-commit-msg

description.md

This git hook extracts the number from a branch and adds it to the commit message as refs. i.e.:

From a branch named whatever-branch-name-5234 will create a commit message like this:

refs #5234
# git COMMIT_MSG comments

prepare-commit-msg

#!/bin/bash

BRANCH_NAME=$(git symbolic-ref --short HEAD)
BRANCH_NAME="${BRANCH_NAME##*/}"

ISSUE_ID=$(echo $BRANCH_NAME | sed 's/^[a-z\-]*-//I')
IS_NUMBER='^[0-9]+$'

if [ -n "$BRANCH_NAME" ] && [[ $ISSUE_ID =~ $IS_NUMBER ]]; then 
  sed -i.bak -e "1s/^/\n\nrefs #$ISSUE_ID /" $1
fi