Post commit hook to auto tag commits based on commit message

post-commit

#!/bin/bash

# Install command:
# curl https://gist.githubusercontent.com/florianpasteur/649f735ea786130922dbdd8308e547a2/raw -o .git/hooks/post-commit &&  chmod +x .git/hooks/post-commit

echo "POST COMMIT HOOK"
COMMIT_HASH=HEAD

echo "commit hash: $COMMIT_HASH"

COMMIT_MESSAGE=$(git log --format=%B -n 1 "$COMMIT_HASH")

if echo "$COMMIT_MESSAGE" | grep "@tag:";
then
  TAG=$(echo "$COMMIT_MESSAGE" | sed -n -e 's/.*@tag://p');
  git tag -f "${TAG}" "$COMMIT_HASH"
fi