caselessLastPos

>>-caselessLastPos(needle-+---------------------------+-)---><
                          +-,--+-------+--+---------+-+
                               +-start-+  +-,length-+

Returns the position of the last occurrence of a string, [needle] , in the receiving buffer. (See also .) It returns 0 if [needle] is the null string or not found. By default, the search starts at the last character of the receiving buffer and scans backward to the beginning of the string. You can override this by specifying [start] , the point at which the backward scan starts and [length] , the range of characters to scan. The [start] must be a positive whole number and defaults to receiving_buffer~length if larger than that value or omitted. The [length] must be a non-negative whole number and defaults to [start] . The search is performed using caseless comparisons.