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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Nicolas Richard <theonewiththeevillook@yahoo.fr>
Cc: 17348@debbugs.gnu.org
Subject: bug#17348: 24.3.50; Cannot advice-add the same function :before and :after
Date: Sat, 26 Apr 2014 08:46:13 -0400	[thread overview]
Message-ID: <jwv38h0462b.fsf-monnier+emacsbugs@gnu.org> (raw)
In-Reply-To: <87vbtwl4sv.fsf@yahoo.fr> (Nicolas Richard's message of "Sat, 26 Apr 2014 13:16:00 +0200")

>   (advice-add 'yftest :before #'yfcheck)
>   (advice-add 'yftest :after #'yfcheck)

`advice-add' will not add the same function twice, indeed.
Similarly to `add-hook'.  This is done explicitly in advice--add-function:

    (when a
      ;; The advice is already present.  Remove the old one, first.
      (setf (gv-deref ref)
            (advice--remove-function (gv-deref ref) (advice--car a))))

I guess we could change that, but then the notion of "removal" becomes
more complicated.


        Stefan





  reply	other threads:[~2014-04-26 12:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-26 11:16 bug#17348: 24.3.50; Cannot advice-add the same function :before and :after Nicolas Richard
2014-04-26 12:46 ` Stefan Monnier [this message]
2014-04-26 20:22   ` Nicolas Richard
2014-05-01 20:47     ` Stefan Monnier
2014-05-10 20:09       ` Stefan Monnier

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