Re: [Regexp] Possible non-conformance with Perl 5 in java distribution of gnu.regexp

Cefn Hoile wrote:

>
> My code do define the RE and its substitute looks like this currently...
>
> ACCEPT_ZIP_PATTERN = new RE(" *(,*) *gzip *(\1*),* *");
> ACCEPT_ZIP_SUBSTITUTE = "\2";
> processed_content_types =
>
> ACCEPT_ZIP_PATTERN.substituteAll(processed_content_types, 
> ACCEPT_ZIP_SUBSTITUTE);


Try:

ACCEPT_ZIP_PATTERN = new RE(" *(,*) *gzip *(\\1*),* *");
ACCEPT_ZIP_SUBSTITUTE = "$2";

>
> The equivalent values which I have attempted within the java PERL5 
> interpreter include...
>
> Multiple different combinations of the backreferences 1 and 2 using 
> either \ or $ to represent them.
> Switching to the RE_PERL_5_S syntax instead of the default RE_PERL_5 
> to see if that changed anything.
>
> I spent ages trying to debug why it didn't work in java before I 
> verified it in the real perl engine. Now I am concerned that the java 
> engine is actually not conformant with PERL5
>
> Alternatively what am I doing wrong to invoke backreferences in the 
> java distribution of gnu.regexp?
>
> Cefn
> http://cefn.com
>
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