> 
> AND here's a completely new regexp engine coming for 2.0 - fun for the  
> whole family.
> 
> That said, although it's undesirable, noone's obliged to be completely  
> PCRE-compatible, and it always pays to take five minutes to read the 
> (IMO  pretty clear as far as regexps are concerned) documentation.
> 

Considering that PCRE is pretty much a language in itself, it would make 
life a hell of a lot easier if there was at least some effort to either 
stick to the established norms of regex engines or at least avoid 
treading on them in the name of being different.  regexp isn't trivial, 
making it more varied from language to language isn't going to help 
matters much.