caselessChangeStr

>>-caselessChangeStr(needle,newneedle--+--------+--)---------------------------------><
                                       +-,count-+

Returns the receiver MutableBuffer [newneedle] replacing occurrences of [needle] . If [count] is not specified, all occurrences of [needle] are replaced. If [count] is specified, it must be a positive, whole number that gives the maximum number of occurrences to be replaced. The [needle] searches are performed using caseless comparisons.