On Sat, 1 Aug 2009, ND wrote:
> Pattern:
> (?&word)(?&element)(?(DEFINE)(?<element><[^m][^>]>[^<])(?<word>\w*+))
> Compilation error:
> reference to non-existent subpattern at 8 position
>
> Substitute 'm' with '\d' in pattern string :
> (?&word)(?&element)(?(DEFINE)(?<element><[^\d][^>]>[^<])(?<word>\w*+))
> Compilation:
> OK
I have committed a patch that fixes this bug. It was nothing to do with
DEFINE. It was an "off-by-one" bug when looking for the forward
reference to the "word" subpattern: elements such as [^m] (with only one
character) were not being correctly skipped. A simpler pattern that also
fails is:
(?&A)(([m])(?<A>))
The fix will be in the next release.
Philip
--
Philip Hazel
