GNU bug report logs - #56739
29.0.50; `cl-psetq' and `cl-psetf' fail to recognize symbol macros

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Message #55 received at 56739 <at> debbugs.gnu.org (full text, mbox):

From: Wing Hei Chan <whmunkchan <at> outlook.com>
To: Gerd Möllmann <gerd.moellmann <at> gmail.com>
Cc: "56739 <at> debbugs.gnu.org" <56739 <at> debbugs.gnu.org>
Subject: Re: bug#56739: 29.0.50; `cl-psetq' and `cl-psetf' fail to recognize
 symbol macros
Date: Sat, 9 Sep 2023 08:03:42 +0000

Resending this message as I didn't send it to the thread.

 > Afaik, *left-hand* side symbol macros are all handled correctly:
 >
 > - `setq' is handled by `cl-symbol-macrolet' itself;
 > - `setf' expands symbol macros as needed;
 > - `cl-setq' and `cl-setf' expand to `setf'.
 >
 > The original bug is about *right-hand* side symbol macros, namely that
 > `cl-setq' and `cl-setf' can introduce an unsound optimization in such
 > cases.  In fact, I'm not sure this optimization is needed anymore (see
 > Stefan's comment).  The simplest way to fix the bug is to remove the
 > optimization, but I'll leave the decision to more knowledgeable people.

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