Re: I lied, another question / problem

From: Date: Wed, 17 Jan 2007 17:33:40 +0000
Subject: Re: I lied, another question / problem
References: 1 2 3 4 5 6  Groups: php.general 
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# jochem@iamjochem.com / 2007-01-17 16:59:26 +0100: > Roman Neuhauser wrote: > > re_format(7) on FreeBSD: > > > > A bracket expression is a list of characters enclosed in `[]'. > > (...) > > If two characters in the list are separated by `-', this is > > shorthand for the full range of characters between those two > > (inclusive) in the collating sequence, e.g. `[0-9]' in ASCII > > matches any decimal digit. > > (...) > > Ranges are very collating-sequence-dependent, and portable programs > > should avoid relying on them. > > one other thing ... > > wouldn't it be fair to assume (safety through paranoia) that > ctype_alnum() would suffer the same problem? (given the manual's > indication that ctype_alnum() and the offending regexp are equivalent?) isalnum(3) uses isalpha(3) and isdigit(3), so yes, their results are locale-dependent (LC_CTYPE, see setlocale(3)), but don't depend on collating sequence. isdigit(3): The isdigit() function tests for a decimal digit character. Regardless of locale, this includes the following characters only: `0'' 1'' 2'' 3'' `4'' `5'' 6'' 7'' 8'' `9'' -- How many Vietnam vets does it take to screw in a light bulb? You don't know, man. You don't KNOW. Cause you weren't THERE. http://bash.org/?255991

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