https://bugzilla.wikimedia.org/show_bug.cgi?id=25920
--- Comment #5 from Aaron Schulz <jschulz_4...@msn.com> 2010-11-15 15:21:07 UTC
---
(In reply to comment #4)
> OK, I think the problem is that the backreference (not just the name) also
> needs the "P". *sigh of relief*.
I do think it's something about the conditional and not the named ref. that
5.2.8 dislikes. Worst case, I can use numbered references as a workaround, but
it makes the expression less versatile for outside use (like combining it with
other regexes).
The following is also valid syntax (perl style):
define( 'RE_IPV6_ADD',
'(' . // starts with "::" (includes the address "::")
'(::|:(:' . RE_IPV6_WORD . '){1,7})' .
'|' . // ends with "::" (not including the address "::")
RE_IPV6_WORD . '(:' . RE_IPV6_WORD . '){0,6}::' .
'|' . // has no "::"
RE_IPV6_WORD . '(:' . RE_IPV6_WORD . '){7}' .
'|' . // contains one "::" in the middle ("^" check always fails if no "::"
found)
RE_IPV6_WORD . '(:(?P<abbr>(?(<abbr>)|:))?' . RE_IPV6_WORD .
'){1,6}(?(<abbr>)|^)' .
')'
);
Does this work on your setup?
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