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From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: t and nil in pure memory?
Date: Thu, 12 Nov 2009 23:55:43 -0500
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To: Eli Zaretskii <eliz@gnu.org>
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    I don't think this matters enough to bother: even if we consider GC
    too slow (and I don't think so), this is only 10% of it, so even
    reducing it to zero will give only a marginal speedup.

Considering how many people run Emacs, I think even a 1% speedup
in GC is worth the effort if it is not much effort.