Re: Why does \w include numbers and underscore?

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Re^2: Why does \w include numbers and underscore? by tye (Sage) on Apr 22, 2004 at 02:58 UTC
Perl has supported `[^\W\d]` forever. One of my favorites is `[^\S\n]` (any whitespace character but newline). (update) I wasn't trying to argue against nor diminish your proposed patch. I just wanted to mention this solution to this problem which didn't appear to be covered in the thread yet. - tye	[reply] [d/l] [select]
Re: Re^2: Why does \w include numbers and underscore? by japhy (Canon) on Apr 22, 2004 at 03:01 UTC
Yeah, but those are simple cases. I'm looking for scalability. _____________________________________________________ Jeff`[japhy]`Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area) `s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;`	[reply]
Re: Re: Why does \w include numbers and underscore? by halley (Prior) on Apr 22, 2004 at 13:41 UTC
To see if I understand, `qr/[a-z]/` is to be seen as class consisting of a range, but `qr/[\w-\d]/` is to be seen as a class composed by the difference between sets? Would `qr/[\d-89]/` find only octal digits or would it find the 9 too? -- `[ e d @ h a l l e y . c c ]`	[reply] [d/l] [select]
Re: Re: Re: Why does \w include numbers and underscore? by japhy (Canon) on Apr 22, 2004 at 15:19 UTC
If I understand TR18 correctly, it would match only octal digits. All the examples in TR18 show additional brackets or give whitespace to help make things clear. Union binds tighter than intersection, which binds tighter than subtraction, so `[\d-89]` is the same as `[\d-[89]]`. _____________________________________________________ Jeff`[japhy]`Pinyan: Perl, regex, and perl hacker, who'd like a job (NYC-area) `s++=END;++y(;-P)}y js++=;shajsj<++y(p-q)}?print:??;`	[reply] [d/l] [select]