Delete GIT branches using a dialog with multiple selection

git-delete-branches.sh

#!/usr/bin/env zsh

set -e

ANSWER_FILE=$(mktemp)

function ask() {
  local -a choices

  for branch in $(git branch); do
    choices+="$branch $branch off" 
  done

  dialog --separate-output --checklist "Choose one or more branches" 10 0 0 -- ${=choices} 2> ${ANSWER_FILE}
  local exit_status=$?
}

ask
clear

read REPLY\?"Really delete: $(cat ${ANSWER_FILE} | xargs) (y/N): "
if [[ "$REPLY" != "y" ]]; then
  exit 1
fi

for i in `cat "${ANSWER_FILE}"`; do
  git branch -D "$i" 
done