On Fri, Jul 16, 2010 at 9:40 AM, Aaron Sherman <a...@ajs.com> wrote: > For example: > > "Ab" .. "Be" > > defines the ranges: > > <A B> and <b c d e> > > This results in a counting sequence (with the most significant character on > the left) as follows: > > <Ab Ac Ad Ae Bb Bc Bd Be> > > Currently, Rakudo produces this: > > "Ab", "Ac", "Ad", "Ae", "Af", "Ag", "Ah", "Ai", "Aj", "Ak", "Al", "Am", > "An", "Ao", "Ap", "Aq", "Ar", "As", "At", "Au", "Av", "Aw", "Ax", "Ay", > "Az", "Ba", "Bb", "Bc", "Bd", "Be"

There is one case where Rakudo's current output makes more sense then your proposal, and that's when the sequence is analogous to a range of numbers in another base, and you don't want to start at the equivalent of '0000' or end up at the equivalent of '9999'. But that's a less usual case and there's a workaround. Using your method & example, "Ab" .. "Az", "Ba" .. "Be" would reproduce what Rakudo does now. In general, I like it. Though it does mean that the sequence generated incrementing "Ab" repeatedly will diverge from "Ab" .. "Be" after 4 iterations. -y