Fabio,

>>Considering that the second and third are in the "normal world" constrained to being the set of one instance of each possible characters, 256 for ASCII, your test is totally absurd.
>>
>>It's also an inaccurate measure of performance of chrtran() because you've mixed the replicate() time into the benchmark.
>
>David, i put replicate within the test because it is faster !

And you fail to address the bigger fault in your latest chrtran() test code....