bug#16966: [PATCH] grep: optimization with the superset of DFA

[Norihiro Tanaka]

Paolo Bonzini <bonz...@gnu.org> wrote:
> Better translate it to a[\x0-\xff]{1,2}b or something similar. 

I also thought that previously.  However, since we don't ask an exact
match for the superset, that is believed to be meaningless.

Norihiro