git branch deletion

git_bd.zsh

function git_bd { # git local branch deletion
  # deletes any local feature branches no longer needed
  # branches without a remote are kept
  # branches with unpushed changes are kept
  git checkout master

  for bra in `git branch | awk '/([0-9].*)/ {print $1}'`
  do
    set -A o `git branch -r | grep $bra`
    if [ "$o" != "" ]
    then
      set -A diff "`git cherry -v $o $bra`"
      if [ "$diff" != "" ]
      then
        echo $bra has unpushed changes. not deleting
      else
        git branch -D $bra
      fi
    else
      echo $bra did not have an origin of the same name
    fi
  done

  git branch
}