(oops pattern start1 end1))
(unless (<= start2 end2 len2)
(oops pattern start2 end2))))
- (when (= 0 end1)
- (return-from search 0))
+ (when (= end1 start1)
+ (return-from search start2))
(do (,(if from-end
'(index2 (- end2 (- end1 start1)) (1- index2))
'(index2 start2 (1+ index2))))