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From: Stefan Monnier via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
To: Alan Mackenzie <acm@muc.de>
Cc: 65051@debbugs.gnu.org
Subject: bug#65051: internal_equal manipulates symbols with position without checking symbols-with-pos-enabled.
Date: Sat, 12 Aug 2023 14:07:39 -0400	[thread overview]
Message-ID: <jwvttt4rvaq.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <ZNdh1P5-oCN83ScW@ACM> (Alan Mackenzie's message of "Sat, 12 Aug 2023 10:41:24 +0000")

>     Streamline time decoding and conversion
>
>     * src/lisp.h (lisp_h_BASE2_EQ, BASE2_EQ): New macros and functions.
>     * src/timefns.c (tzlookup, Fdecode_time): Use them.
>     (Ftime_convert): Convert to symbol once, instead of many times.  <=====
>
> ..  form, if a SWP, gets replaced by its bare symbol, so that the
> following comparisons can be done by BASE_EQ rather than EQ.  It's an
> optimisation, though I can't really see why it's worthwhile.
>
> If you remove that SWP handling, as you are proposing, you'll need to
> set these BASE_EQ's back to EQ's, too.

I see, thanks.

It's kind of odd, tho: it's the only function that does that, AFAICT.
I also can't see why `time-convert` should accept SWPs in addition to
bare symbols.  In my book, it seems like passing it an SWP would be
a mistake.


        Stefan






  reply	other threads:[~2023-08-12 18:07 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-08-04 14:00 bug#65051: internal_equal manipulates symbols with position without checking symbols-with-pos-enabled Alan Mackenzie
2023-08-04 14:32 ` Eli Zaretskii
2023-08-04 14:59   ` Alan Mackenzie
2023-08-04 15:27     ` Eli Zaretskii
2023-08-04 17:06       ` Alan Mackenzie
2023-08-04 18:01         ` Eli Zaretskii
2023-08-05 10:45           ` Alan Mackenzie
2023-08-05 10:57             ` Eli Zaretskii
2023-08-05 11:52               ` Alan Mackenzie
2023-08-05 12:13                 ` Eli Zaretskii
2023-08-05 13:04                   ` Alan Mackenzie
2023-08-05 13:13                     ` Eli Zaretskii
2023-08-13 16:14                       ` Alan Mackenzie
2023-08-05 14:40 ` Mattias Engdegård
2023-08-05 16:59   ` Alan Mackenzie
2023-08-05 17:02     ` Mattias Engdegård
2023-08-05 21:07   ` Alan Mackenzie
2023-08-06 13:37     ` Mattias Engdegård
2023-08-06 15:02       ` Alan Mackenzie
2023-08-07  8:58         ` Mattias Engdegård
2023-08-07  9:44           ` Alan Mackenzie
2023-08-09 18:45             ` Mattias Engdegård
2023-08-07  3:30 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-07  9:20   ` Alan Mackenzie
2023-08-08  2:56     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-08 15:33       ` Alan Mackenzie
2023-08-10  3:28         ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-10  9:14           ` Alan Mackenzie
2023-08-10 14:28             ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-10 18:35               ` Alan Mackenzie
2023-08-12  5:36                 ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-12  6:10                   ` Eli Zaretskii
2023-08-12 18:46                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors
2023-08-12 19:10                       ` Eli Zaretskii
2023-08-13 15:27                       ` Alan Mackenzie
2023-08-12 10:41                   ` Alan Mackenzie
2023-08-12 18:07                     ` Stefan Monnier via Bug reports for GNU Emacs, the Swiss army knife of text editors [this message]
2023-08-13 13:52                       ` Alan Mackenzie
2023-08-12 21:59                   ` Alan Mackenzie
2023-08-11  0:51         ` Dmitry Gutov
2023-08-11 10:42           ` Alan Mackenzie
2023-08-11 11:18             ` Dmitry Gutov
2023-08-11 12:05               ` Alan Mackenzie
2023-08-11 13:19                 ` Dmitry Gutov
2023-08-11 14:04                   ` Alan Mackenzie
2023-08-11 18:15                     ` Dmitry Gutov
     [not found] ` <handler.65051.B.169115764532326.ack@debbugs.gnu.org>
2023-09-04 12:57   ` bug#65051: Acknowledgement (internal_equal manipulates symbols with position without checking symbols-with-pos-enabled.) Alan Mackenzie

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