_ant_does_target_list_need_generating () {
    [ ! -f .ant_targets ] && return 0;
    [ build.xml -nt .ant_targets ] && return 0;
    return 1;
  }
  
  _ant () {
    if [ -f build.xml ]; then
      if _ant_does_target_list_need_generating; then
      	ant -p | awk -F " " 'NR > 5 { print lastTarget }{lastTarget = $1}' > .ant_targets
      fi
      compadd -- `cat .ant_targets`
    fi
  }
  
  compdef _ant ant