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

[Eli Zaretskii]

> From: Ihor Radchenko <yantar92@posteo.net>
> Cc: sbaugh@catern.com, sbaugh@janestreet.com, dmitry@gutov.dev,
>  michael.albinus@gmx.de, rms@gnu.org, 64735@debbugs.gnu.org
> Date: Sun, 23 Jul 2023 09:42:45 +0000
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Think about an API that is passed a function, and calls that function
> > when appropriate, to perform caller-defined processing of the stuff
> > generated by the API's implementation.  That function is what I
> > referred to as "callback".
> 
> But what is the strategy that should be used to call the CALLBACK?
> You clearly had something other than "call as soon as we got another
> file name" in mind.

It could be "call as soon as we got 100 file names", for example.  The
number can even be a separate parameter passed to the API.