Subject: bug#40634: Massive pattern list handling with -E format seems very slow since 2.28.

From: Norihiro Tanaka <[email-masked]>
Date: Fri, 17 Apr 2020 07:53:12 +0900

On Thu, 16 Apr 2020 09:31:32 -0700
Paul Eggert <[email-masked]> wrote:

> On 4/15/20 11:56 PM, Norihiro Tanaka wrote:
> 
> > It seems to a lot of time is spent in dfa.c:replace().
> > It was added at d6df3873c7abc243683d0e8fccbfde4e76f23e53 in gnulib.
> 
> It would be pretty drastic to revert that patch. Is there some better way to move forward?

I have had no idea to solve the problem yet.  If we revert it, bug#33357
will come back.