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

From: Paul Eggert <[email-masked]>
Date: Thu, 16 Apr 2020 16:00:29 -0700

On 4/16/20 3:53 PM, Norihiro Tanaka wrote:

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

Yes, I'd rather not revert if we can help it.

My own thought was to not analyze the regular expression if we discover that the 
input is empty. :-)