From: Richard Stallman <rms@gnu.org>
To: Stefan Monnier <monnier@IRO.UMontreal.CA>
Cc: dancol@dancol.org, emacs-devel@gnu.org
Subject: Re: [RFC PATCH] Per-window face support
Date: Mon, 18 Jun 2018 19:22:32 -0400 [thread overview]
Message-ID: <E1fV3Tk-0007Tx-Mf@fencepost.gnu.org> (raw)
In-Reply-To: <jwvin6hf85l.fsf-monnier+emacs@gnu.org> (message from Stefan Monnier on Sun, 17 Jun 2018 16:57:13 -0400)
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> The definition of `eq` in Common-Lisp (and Scheme likewise for `eq?`)
> allows it to be defined identically to `eql`.
I fear this would lead to a big slowdown in assq, memq, and many other
inner loops that now check EQ. Replacing that with EQL, even if it is
open-coded, would require testing the type first.
One way to avoid that slowdown would be to replace each inner loop
with two inner loops, one for the case where EQL really means EQ
and one for the case where it doesn't.
--
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)
next prev parent reply other threads:[~2018-06-18 23:22 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-07 23:42 [RFC PATCH] Per-window face support dancol
2018-06-08 2:57 ` Stefan Monnier
2018-06-08 3:18 ` Daniel Colascione
2018-06-08 3:53 ` Stefan Monnier
2018-06-08 9:15 ` Eli Zaretskii
2018-06-16 10:29 ` Eli Zaretskii
2018-06-16 14:24 ` Daniel Colascione
2018-06-16 15:06 ` Eli Zaretskii
2018-06-16 15:30 ` Daniel Colascione
2018-06-16 16:09 ` Eli Zaretskii
2018-06-16 17:35 ` Stefan Monnier
2018-06-16 21:03 ` Daniel Colascione
2018-06-17 18:20 ` Stefan Monnier
2018-06-17 18:48 ` Daniel Colascione
2018-06-17 19:03 ` Stefan Monnier
2018-06-17 19:21 ` Daniel Colascione
2018-06-17 20:51 ` Stefan Monnier
2018-06-17 21:16 ` Daniel Colascione
2018-06-17 21:34 ` Paul Eggert
2018-06-17 22:25 ` Aliasing EQ to EQL (was: [RFC PATCH] Per-window face support) Stefan Monnier
2018-06-17 23:49 ` Daniel Colascione
2018-06-18 2:14 ` Aliasing EQ to EQL Stefan Monnier
2018-06-18 3:48 ` Daniel Colascione
2018-06-18 13:56 ` Stefan Monnier
2018-06-17 19:23 ` [RFC PATCH] Per-window face support Stefan Monnier
2018-06-17 19:25 ` Daniel Colascione
2018-06-17 19:32 ` Stefan Monnier
2018-06-17 19:49 ` Daniel Colascione
2018-06-17 20:57 ` Stefan Monnier
2018-06-18 23:22 ` Richard Stallman [this message]
2018-06-19 1:21 ` Stefan Monnier
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