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Posted by gosha bine on 09/07/07 13:07
On 07.09.2007 14:55 Rik Wasmus wrote:
> On Fri, 07 Sep 2007 11:47:58 +0200, gosha bine <stereofrog@gmail.com>
> wrote:
>
>> On 07.09.2007 09:56 Rik Wasmus wrote:
>>
>>> ([^\2]+) #match one or more characters in match 3 that are
>>> NOT in match 2
>>
>> [^\2] doesn't mean "negate group 2" as you and the manual people seem
>> to think. It means "any character except that with ascii code 2".
>
> Hmmz, a quick check indicates you're right, mea culpa.
>
> The manual iq quite confusing at this point though:
> "Inside a character class, or if the decimal number is greater than 9
> and there have not been that many capturing subpatterns, PCRE re-reads
> up to three octal digits following the backslash, and generates a single
> byte from the least significant 8 bits of the value. Any subsequent
> digits stand for themselves. For example:
> ....
> \7
> is always a back reference
> \11
> might be a back reference, or another way of writing a tab"
Well, it's clear enough: "Inside a character class..."
>
> According to this, I'd expect it to be a back reference. Which brings me
> to the question: what is the way to get a beckreference into a negated
> character class, if there is one?
>
Character classes are... hm... classes of _characters_, there's no way
to put references (which are _strings_) there.
--
gosha bine
makrell ~ http://www.tagarga.com/blok/makrell
php done right ;) http://code.google.com/p/pihipi
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