Your patterns work fine with 8.20 release version here. Have you tried
them in pcretest?
On 11/14/2011 12:23 PM, Ralf Junker wrote:
> I am reporting a regression related to look*behind* assertions which
> contain a fixed number of repetitions. PCRE no longer recognizes them as
> fixed length and reports a compile error.
>
> The following simple positive and negative lookbehind assertion examples
> fail with the current version (8.20 and SVN 743). The error message is
> "lookbehind assertion is not fixed length":
>
> (?<=a{2})b
> (?<!a{2})b
>
> Both patterns worked fine in PCRE 8.11. As far as I can tell, the
> problem was introduced somewhere between SVN 582 and SVN 606.
>
> Can you reproduce the problem? Any suggestions how to fix this would be
> very welcome!
>
> Ralf
>
> PS: Not sure if this matters, but look*ahead* assertions work fine and
> seem unrelated to the problem.
>
