#!/bin/sh

function get_task_value {
	 echo "$task_data" | grep "^$1" | sed -E "s/^$1 +//"
}

ids=$(task limit:none recur | grep -E '^ +[[:digit:]].*[[:alpha:]].*[[:digit:]]$' | sed -E 's/^ +([[:digit:]]+) .*/\1/')

excluded_ids=$(for id in $ids
					do
						 task_data="$(task $id)"
						 echo "$(get_task_value 'Parent task') $(get_task_value 'Description' | sed 's/ /_/g') $(get_task_value 'Due') $id"	 
					done | sort | rev | uniq -f3 | rev | sed -E 's/.* ([[:digit:]]+)$/\1/')

del_ids=$(for id in $excluded_ids $ids
			 do
				  echo $id
			 done | sort | uniq -u)

task $del_ids del