Prune local and remote merged branches

git-prune-branches.sh

#!env bash

# NOTE: based on
# https://coderwall.com/p/fkk2lw/bash-script-to-clean-up-obsolete-git-branches
# Changes made to first only remove branches you've checked out,
# then 2nd repo-wide check.
# also added human-readable output and prompts

# This has to be run from master
git checkout master

# Update our list of remotes
git fetch

# Prune references to non-existend remote-tracking braches
git remote prune origin

FILTER='^\(master\|HEAD\|release\|develop\|feature\)'

LOCALS=`git branch --merged | sed -E "s/\*? *//" | grep -v "$FILTER"`
REMOTES=`git branch -r --merged | sed -E "s/ *origin\///" | grep -v "$FILTER"`

if [[ "$LOCALS" != "" ]]; then
    # Show local fully merged branches
    echo "
$LOCALS
---
The above LOCAL branches are fully merged and will be removed,
along with their REMOTE counterparts.
---"

    read -p "Continue (yes/n)? "
    if [ "$REPLY" == "yes" ]; then
        # Remove remote fully merged branches
        echo "$LOCALS" | xargs git br -d
        echo "$LOCALS" | xargs -I% git push origin :%
        echo "LOCAL branches removed!"
    fi
fi

if [[ "$REMOTES" != "" ]]; then
    # Show remote fully merged branches
    echo "
$REMOTES
---
The above REMOTE branches are fully merged and will be removed.
---"

    read -p "Continue (yes/n)? "
    if [ "$REPLY" == "yes" ]; then
        # Remove remote fully merged branches
        echo "$REMOTES" | xargs -I% git push origin :%
        echo "REMOTE branches removed!"
    fi
fi