From: "João Távora" <joaotavora@gmail.com>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
Subject: Re: Distinguishing `consp` and `functionp`
Date: Mon, 29 Jan 2024 16:34:49 +0000 [thread overview]
Message-ID: <CALDnm52wqN_TT7F+pPoMODPLJtNHHb4um-bp17X0VhsB53uv7Q@mail.gmail.com> (raw)
In-Reply-To: <jwvmssods3p.fsf-monnier+emacs@gnu.org>
On Mon, Jan 29, 2024 at 4:28 PM Stefan Monnier <monnier@iro.umontreal.ca> wrote:
>
> > I don't think there is much space for philosophy or debate in noting
> > for example, that a list as lambda won't get byte-compiled like a
> > true lambda form.
> >
> > (byte-compile '(let ((bla (lambda () (+ 42 42))))
> > (funcall bla))) ;; -> (byte-code "\300\211 \207" [#[0
> > "\300\207" [84] 1]] 2)
> >
> >
> > (byte-compile '(let ((bla '(lambda () (+ 42 42))))
> > (funcall bla)));; -> (byte-code "\300 \207" [(lambda
> > nil (+ 42 42))] 1)
>
> While it's in the vicinity, this is not directly related to my patch.
I know, your patch doesn't address this. But if I understand
correctly it makes at least functionp return nil for the second one.
Or at least makes way for it. And that's a plus in my book.
>
> >> commit 9228fd983bb9e71d44d406433a46495b22640801
> >> Author: Marten Lienen <marten.lienen@gmail.com>
> >> Date: Mon Jan 22 11:08:44 2024 +0100
> >>
> >> * yasnippel.el (yas-buffer-local-condition): Check functionp before consp to allow closures
> [...]
> > Stefan's patch moves us in the right direction if just for the guidance
> > it gives to ignorant Lispers like the one who introduced that bug circa 2009.
>
> FWIW, the bug fixed by the above commit was introduced a few days
> earlier by yours truly,
Alright. I wouldn't be surprised if I wasn't passing lists as lambdas
around in that extension. I used to do that, and saw many fall prety
to this, when their lisps allow it. The result is harder to debug code
and harder to instrument.
next prev parent reply other threads:[~2024-01-29 16:34 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-25 23:15 Distinguishing `consp` and `functionp` Stefan Monnier
2024-01-26 0:00 ` Adam Porter
2024-01-26 0:24 ` Stefan Monnier
2024-01-26 7:31 ` Eli Zaretskii
2024-01-26 19:22 ` João Távora
2024-01-26 21:13 ` Stefan Monnier
2024-01-26 21:50 ` João Távora
2024-01-26 23:55 ` Stefan Monnier
2024-01-27 0:22 ` Daniel Mendler via Emacs development discussions.
2024-01-27 11:47 ` João Távora
2024-01-27 13:20 ` Po Lu
2024-01-27 11:53 ` João Távora
2024-01-28 3:03 ` Richard Stallman
2024-01-28 21:27 ` Stefan Monnier
2024-01-29 12:45 ` Eli Zaretskii
2024-01-29 15:19 ` Stefan Monnier
2024-01-29 15:31 ` Eli Zaretskii
2024-01-29 15:41 ` Stefan Monnier
2024-01-29 15:46 ` Eli Zaretskii
2024-01-29 15:48 ` Stefan Monnier
2024-01-29 15:54 ` João Távora
2024-01-29 16:10 ` Eli Zaretskii
2024-01-29 16:25 ` João Távora
2024-01-29 16:10 ` Eli Zaretskii
2024-01-29 16:17 ` Andreas Schwab
2024-01-29 16:34 ` João Távora
2024-02-01 3:49 ` Richard Stallman
2024-01-29 16:28 ` Stefan Monnier
2024-01-29 16:34 ` João Távora [this message]
2024-01-29 20:00 ` Stefan Monnier
2024-01-30 8:58 ` João Távora
2024-01-30 12:54 ` Stefan Monnier
2024-01-30 22:24 ` João Távora
2024-01-30 23:13 ` Stefan Monnier
2024-01-30 23:43 ` João Távora
2024-01-31 0:22 ` Stefan Monnier
2024-01-31 0:40 ` João Távora
2024-01-31 3:37 ` Stefan Monnier
2024-01-31 10:51 ` João Távora
2024-01-31 18:34 ` Stefan Monnier
2024-02-01 3:49 ` Richard Stallman
2024-01-29 17:09 ` Yuri Khan
2024-02-01 3:49 ` Richard Stallman
2024-01-30 3:58 ` Richard Stallman
2024-01-27 11:00 ` Alan Mackenzie
2024-01-27 14:25 ` Stefan Monnier
2024-01-27 23:01 ` Alan Mackenzie
2024-01-28 0:00 ` Stefan Monnier
2024-01-28 6:12 ` Eli Zaretskii
2024-01-28 17:26 ` Alan Mackenzie
2024-01-28 17:48 ` Eli Zaretskii
2024-01-28 19:42 ` Alan Mackenzie
2024-01-28 20:08 ` Eli Zaretskii
2024-01-28 18:21 ` Stefan Monnier
2024-01-28 18:38 ` Stefan Monnier
2024-01-27 13:14 ` Po Lu
2024-01-27 14:41 ` Stefan Monnier
2024-01-28 1:56 ` Po Lu
2024-01-28 20:55 ` Stefan Kangas
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