From: Paul Eggert <eggert@cs.ucla.edu>
To: Daniel Colascione <dancol@dancol.org>,
Stefan Monnier <monnier@IRO.UMontreal.CA>
Cc: emacs-devel@gnu.org
Subject: Re: [RFC PATCH] Per-window face support
Date: Sun, 17 Jun 2018 14:34:08 -0700 [thread overview]
Message-ID: <1c706afb-47c7-a8a7-3d3c-d4c8ea95cf70@cs.ucla.edu> (raw)
In-Reply-To: <d83e39f9ccc0ce5bb9386807f7ccca1c.squirrel@dancol.org>
Daniel Colascione wrote:
> Getting rid of `eq' is just lying to programmers about
> object identity.
I don't see how it would be lying to equate eq and eql for numbers. An object's
identity is not the same thing as a machine-level address, and whether two
instances of the same number are eq is an implementation detail that Lisp
programmers should not rely upon.
This doesn't mean that we should equate eq and eql. Perhaps there are good
efficiency reasons to continue to distinguish them. But these would be merely
pragmatic, not philosophical.
next prev parent reply other threads:[~2018-06-17 21:34 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 [this message]
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
2018-06-19 1:21 ` Stefan Monnier
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