bug#64735: 29.0.92; find invocations are ~15x slower because of ignores

[Eli Zaretskii]

> Date: Wed, 26 Jul 2023 04:56:20 +0300
> Cc: luangruo@yahoo.com, sbaugh@janestreet.com, yantar92@posteo.net,
>  64735@debbugs.gnu.org
> From: Dmitry Gutov <dmitry@gutov.dev>
> 
> Your other idea (spending time in text conversion) also sounds 
> plausible, but I don't know whether this much overhead can be explained 
> by it. And don't we have to convert any process's output to our internal 
> encoding anyway, on any platform?

We do, but you-all probably run your tests on a system where the
external encoding is UTF-8, right?  That is much faster.