GNU bug report logs - #59820
[PATCH] * nadvice/nadvice.el: support non-symbol (closure/lambda) advices (old Emacs)

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Message #16 received at 59820 <at> debbugs.gnu.org (full text, mbox):

From: daanturo <daanturo <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 59820 <at> debbugs.gnu.org
Subject: Re: bug#59820: [PATCH] * nadvice/nadvice.el: support non-symbol
 (closure/lambda) advices (old Emacs)
Date: Tue, 13 Dec 2022 21:59:23 +0700

[Message part 1 (text/plain, inline)]

> I usually recommend to use named
> functions for advice anyway

How about we still allow but warn against such problematic usage?


On 13/12/2022 20:50, Stefan Monnier wrote:
>> This patch provides the ELPA version (for Emacs < 24.4) of nadvice.el's
>> advice-add the ability to handle anonymous advices.
> [...]
>> +(defun advice--ensure-symbol (func)
>> +  (if (symbolp func)
>> +      func
>> +    (let* ((sym (intern (format "%S" func))))
>> +      (unless (fboundp sym)
>> +        (defalias sym func))
>> +      sym)))
> I'm not a big fan of this approach, and I usually recommend to use named
> functions for advice anyway (avoids all kinds of problems like the
> `advice-remove` failing to remove, or the equality test taking too much
> time, ...).
>
> IOW I'd rather align the "real nadvice.el" with the one in GNU ELPA than
> the other way around in this respect.
>
>
>         Stefan
>
-- 
Daanturo.

[0002-nadvice-nadvice.el-warn-against-non-symbol-FUNCTIONs.patch (text/x-patch, attachment)]

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