[Python-Dev] Regular expressions, Unicode etc.

[Greg Ewing]

James Y Knight wrote:
> On Aug 8, 2007, at 3:47 PM, Nick Maclaren wrote:
> > Firstly, things like backreferences are an absolute no-no.  They
> > are not regular, and REs with them in cannot be converted to DFAs.
>
> People keep saying things like this as if GNU grep and tcl's regular  
> expression matchers didn't exist.

But do these work by conversion to a DFA?

--
Greg