git-delete-merged-branches

#!/usr/bin/env bash

# Delete merged branches

local="no"
remote="no"
help="yes"
mergedinto="master"
dryrun="no"

while (( "$#" )); do

    if [ "$1" == "-l" ]; then
	local="yes"
	help="no"
	shift
    elif [ "$1" == "-r" ] && [ x"$2" != x ]; then
	remote="$2"
	help="no"
	shift 2
    elif [ "$1" == "-c" ] && [ x"$2" != x ]; then
	mergedinto="$2"
	shift 2
    elif [ "$1" == "-d" ]; then
	dryrun="yes"
	shift
    else
	help="yes"
	break;
    fi
done

if [ $help == "yes" ]; then
    echo
    echo "Delete merged branches"
    echo
    echo "Syntax: git-delete-merged-branches [-l] [-r remote] [-c commit]"
    echo
    echo "-c <commit>  Delete all branches reachable from <commit>. Default is master."
    echo "-l           Delete local branches."
    echo "-r <remote>  Delete and push remote branches of <remote>."
    echo "-d           Dry run. Just print branches that would had been deleted."
    echo
fi


if [ $local == "yes" ]; then
    for x in `git branch --merged $mergedinto | grep -v '^[*+]'`
    do
	case "$x" in
	    master | maint | maint-[0-9][0-9])
		echo "Skipping $x"
		;;
	    *)
		if [ $dryrun == "yes" ]; then
		    echo "DRYRUN: git branch -D $x"
		else
		    git branch -D $x
		fi
		;;
	esac
    done
fi

if [ $remote != "no" ]; then
    for x in `git branch -r --merged $mergedinto --format="%(refname)" | grep "^refs/remotes/$remote/"`
    do
	branch=${x#refs/remotes/$remote/}
	case $branch in
	    HEAD | master | maint | maint-[0-9][0-9])
		echo "Skipping $x"
		;;
	    *)
		if [ $dryrun == "yes" ]; then
		    echo "DRYRUN: git push $remote :$branch"
		else
		    echo "Deleting remote branch $x"
		    if ! git push $remote :$branch; then
			# Branch did probably not exist at $remote
			# Delete local remote-tracking branch
			git branch -rD $x
		    fi
		fi
		;;
	esac
    done
fi