Validate commit messages on the client side

commit-msg

#!/bin/sh

# Don't worry about merge commits
if [ -f .git/MERGE_MSG ]; then
    exit 0
fi

# Get first non-comment line of the commit message
fl=$(sed '/^#.*/d' $1 | head -1)

# Check the line against a regex
if ! [[ $fl =~ ^[A-Z]+-[0-9]{4}:\ .* ]]; then
    echo "Improperly formatted commit message '"$fl"'"
    echo "Example of a correctly formatted message: 'PROJECT-1234: Message'"
    exit 1
fi