GNU bug report logs - #14317
24.3.50; nadvice.el: named advices not upgradable

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: michael_heerdegen <at> web.de
Subject: bug#14317: closed (Re: bug#14317: 24.3.50; nadvice.el: named
 advices not upgradable)
Date: Mon, 06 May 2013 15:29:02 +0000

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Your bug report

#14317: 24.3.50; nadvice.el: named advices not upgradable

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 14317 <at> debbugs.gnu.org.

-- 
14317: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14317
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 14317-done <at> debbugs.gnu.org
Subject: Re: bug#14317: 24.3.50; nadvice.el: named advices not upgradable
Date: Mon, 06 May 2013 11:27:37 -0400

> Is the current behavior intended?  If not, can we change it?

Changed, thanks,


        Stefan

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From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3.50; nadvice.el: named advices not upgradable
Date: Tue, 30 Apr 2013 01:42:14 +0200

Hi Stefan,

if you have some code adding advices that can be identified (i.e.,
adding named advices or fbound symbols, not anonymous functions),
and you change this code defining the advice and re-evaluate, the change
doesn't take effect (in contrast to the behavior of advice.el).

We currently use this:

--8<---------------cut here---------------start------------->8---
(defun advice--add-function (where ref function props)
  (unless (advice--member-p function (cdr (assq 'name props))
                            (gv-deref ref))
    (setf (gv-deref ref)
          (advice--make where function (gv-deref ref) props))))
--8<---------------cut here---------------end--------------->8---

but as a user, I would suspect something like

--8<---------------cut here---------------start------------->8---
(defun advice--add-function (where ref function props)
  (when (advice--member-p function (cdr (assq 'name props))
                          (gv-deref ref))
    (advice--remove-function .........))
  (setf (gv-deref ref)
        (advice--make where function (gv-deref ref) props)))
--8<---------------cut here---------------end--------------->8---

i.e., replacing the old code, instead of doing nothing.

Is the current behavior intended?  If not, can we change it?


Regards,

Michael.

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