[NAME] ALL.dao.type.string.pattern.pfind [TITLE] string.pfind() [DESCRIPTION] 1 string.pfind( pt :string, index = 0, start = 0, end = 0 )=>list<tuple<start:int,end:int> > This method searches for the position(s) of substring(s) that match(es) to the pattern represented by pt. If index is greater than zero, search for the index-th occurrence of the matched substring, otherwise, search for all. The searching starts from position start, and ends at end if it is greater than zero. Zero value for end indicates searching until the end of the string.