----- Original Message ----- From: "Aaron Sherman" <[EMAIL PROTECTED]> To: "David Wheeler" <[EMAIL PROTECTED]> Cc: "Perl6 Language List" <perl6-language@perl.org> Sent: Friday, April 15, 2005 2:00 PM Subject: Re: should we change [^a-z] to <-[a..z]> instead of <-[a-z]>?
> On Thu, 2005-04-14 at 21:32 -0700, David Wheeler wrote: > > On Apr 14, 2005, at 7:06 PM, Patrick R. Michaud wrote: > > > > > So, <[a.z]> matches "a", ".", and "z", > > > while <[a..z]> matches characters "a" through "z" inclusive. > > > > I was going to say that that was inconsistent, but since you never need > > to repeat a letter in a character class, well, I guess it isn't. But > > the first person to write <[a...]> gets what's comin' to 'em. > > A silly question: is there a canonical character set from which we > extract these ranges? Are we hard-coding Unicode here, or is there some > way for the user to specify the character set for ranges? > <delurk> even sillier question: if <[a.z]> matches "a", "." and "z" and <[a...]> matches all characters from "a" including (for some definition of 'all') how will be range \x21 .. \x2e written? <[!..\.]>? (i.e. "." escaped?) </delurk> braÅo
