gclb alias to clean git local branches and keep `development` as the only branch left

.zshrc

unalias gclb 2>/dev/null

gclb() {
  git checkout development || return
  local branches
  branches=$(git branch --format="%(refname:short)" | grep -Fxv "development")
  if [ -z "$branches" ]; then
    echo $'\033[0;32mNo branches to be deleted.\033[0m'
    return
  fi
  echo "Branches to be deleted:"
  while IFS= read -r branch; do
    echo $'\033[0;31m'"$branch"$'\033[0m'
  done <<< "$branches"
  read -q "confirm?Are you sure you want to delete these branches? (y/n): "
  echo ""
  if [[ $confirm =~ ^[Yy]$ ]]; then
    echo "$branches" | xargs git branch -D
  else
    echo "Operation canceled."
  fi
}