#!/bin/sh
set -eu

usage() {
    cat <<-'EOF'
        Usage:
          git cleanup
          git cleanup -h
    EOF
}

help() {
    cat <<-'EOF'

        Options:
          -h, --help    show this message
    EOF
}

for flag in "$@"; do
    case "$flag" in
        --)
            break
            ;;
        --help)
            usage
            help
            exit
            ;;
        *)
            ;;
    esac
done

while getopts 'h' flag; do
    case "$flag" in
        h)
            usage
            help
            exit
            ;;
        *)
            usage >&2
            exit 2
            ;;
    esac
done
shift $((OPTIND - 1))



git branch --merged |
    grep -v -e '^\*' -e '^. main$' |
    xargs git branch -d