CaT <cat(at)zip(dot)com(dot)au> writes:
> There's a bug in your version of pcre I think as postgres would have
> little to do with the regex itself (I be guessing).
You be wrong ... PG uses Tcl's regex engine, not pcre, and this behavior
is as documented. No, I don't know why Henry Spencer chose to do it
that way, but he's certainly forgotten more about REs than the rest of
us will ever know.
regards, tom lane