I'd like to suggest the code change given by the attached patch.
The idea is to change RegexFilterPageGenerator a little bit. First
change the 'regex' param to a list of regex(es) instead of 1 single.
The whole list of regex will be checked for a positive match. The
second change involves a new parameter 'invert' which, if set to
True changes the generator from returning pages on ANY POSITIVE match
to return page on NO POSITIVE match AT ALL. This way a positive
(additive) and negative (subtractive) filter behaviour can be achieved.
This would also be very helpful for my bot... ;)
Thanks a lot and greetings