git-deletemerged

#!/bin/bash

###############################################################################
# Handle options
###############################################################################

# Display the help
if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
  echo -e "
Delete all the branches that is already merged into master, except for the current branch.

\e[33mUsage:\e[0m
  git deletemerged [-h] [-y]

\e[33mOptions:\e[0m
\e[32m  -h, --help \e[0m Display this help message
\e[32m  -y         \e[0m Answer yes to all confirmations
"
  exit 0;
fi

# Skip all confirmations
if [ "${1:-}" = "-y" ]; then
  force=true
fi


###############################################################################
# Script
###############################################################################

current_branch=$(git currentbranch)
# Get all merged branches. Filter out master and the current branch
# "\b" = start of a word.
# "$" = end of line.
# "\|" = or
branches=$(git branch --merged master | grep -v "\bmaster$\|\b${current_branch}$")

# Handle the empty case
if [ -z "${branches}" ]; then
  echo -e "No branches to delete"
  exit 1;
fi

# Loop over all the branches we found
echo "${branches}" | while read -r branch ; do
  # Confirm before deleting, default to yes
  if [ "${force}" = true ] || ask "Delete the branch '${branch}'?" -y; then
    git branch -d "${branch}"
  fi
done