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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Opportunistic garbage collection
Date: Thu, 25 Apr 2019 09:27:30 +0300
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> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Wed, 24 Apr 2019 17:17:45 -0700
> Cc: emacs-devel@gnu.org
> 
> >        /* If there is still no input available, ask for GC.  */
> >        if (!detect_input_pending_run_timers (0))
> > -	maybe_gc ();
> > +	maybe_gc (); /* FIXME: Why?  */
> >      }
> If we don't know why, let's get rid of it....

We know why, we just think this actually causes GC only very rarely.