From: "Mattias Engdegård" <mattiase@acm.org>
To: Pip Cet <pipcet@gmail.com>
Cc: eliz@gnu.org, emacs-devel@gnu.org
Subject: Re: Bug#38708: eq vs eql in byte-compiled code
Date: Tue, 31 Dec 2019 17:05:32 +0100 [thread overview]
Message-ID: <5625EDCF-FC4B-4924-8574-E60DCAF830AF@acm.org> (raw)
In-Reply-To: <CAOqdjBc1YB5D2GHkJ4mf50HebdRa-hOUJr5jthKphu3-k87vOQ@mail.gmail.com>
31 dec. 2019 kl. 16.07 skrev Pip Cet <pipcet@gmail.com>:
> For example, this code will produce t:
>
> (defun my-eq (a b) (eq a b))
> (defun f () (xor (eq 1.0 1.0) (my-eq 1.0 1.0)))
> (byte-compile 'f)
> (f)
The summary is correct (thank you). Let me just add that strings were already deduplicated in the same way, so if 1.0 is replaced with "A" in the code fragment above, the result is the same. And eq is no more appropriate for flonums than for string literals.
next prev parent reply other threads:[~2019-12-31 16:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-31 15:07 Bug#38708: eq vs eql in byte-compiled code Pip Cet
2019-12-31 15:51 ` Andrea Corallo
2019-12-31 16:05 ` Mattias Engdegård [this message]
2019-12-31 17:38 ` Paul Eggert
2020-01-01 12:38 ` Mattias Engdegård
2020-01-02 8:38 ` Paul Eggert
2020-01-02 17:26 ` Mattias Engdegård
2020-01-04 19:55 ` Stefan Monnier
2020-01-22 10:56 ` Mattias Engdegård
2020-01-25 0:59 ` Paul Eggert
2020-01-01 15:45 ` Stefan Monnier
2020-01-02 7:52 ` Paul Eggert
2020-01-02 12:27 ` Pip Cet
2020-01-02 23:12 ` Paul Eggert
2020-01-02 13:48 ` Eli Zaretskii
2020-01-04 18:54 ` Stefan Monnier
2020-01-04 19:33 ` Paul Eggert
2020-01-04 19:49 ` Stefan Monnier
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