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How to automatically prepend git commit with a branch name

prepare-commit-msg

Hook to prepend branch name to commit for better integration with third party systems.

Installation

Install hook on git repository

curl -sL https://gist.github.com/marceloalmeida/067889e16abb243f98ac35e8943247bb/raw/prepare-commit-msg -o .git/hooks/prepare-commit-msg && \
chmod u+x .git/hooks/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)
BRANCH_NAME="${BRANCH_NAME##*/}"
BRANCH_EXCLUDED=$(printf "%s\n" "${BRANCHES_TO_SKIP[@]}" | grep -c "^$BRANCH_NAME$")
BRANCH_IN_COMMIT=$(grep -c "$BRANCH_NAME - " $1)
MERGE_COMMIT_MSG=$(head -n 1 $1 | grep -c "^Merge\ branch.*")
if [ -n "$BRANCH_NAME" ] && ! [[ $BRANCH_EXCLUDED -eq 1 ]] && ! [[ $BRANCH_IN_COMMIT -ge 1 ]] && [[ $MERGE_COMMIT_MSG -eq 0 ]]; then
sed -i.bak -e "1s/^/$BRANCH_NAME - /" $1
fi
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