From: Stefan Monnier <monnier@iro.umontreal.ca>
To: "João Távora" <joaotavora@gmail.com>
Cc: Thierry Volpiatto <thierry.volpiatto@gmail.com>,
Ivan Kanis <ivan.kanis@googlemail.com>,
emacs-devel@gnu.org
Subject: Re: problems with flet on last emacs
Date: Sat, 10 Nov 2012 18:38:53 -0500 [thread overview]
Message-ID: <jwvbof5owzu.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <CALDnm52p=wKhPAw7fod7dCXe8QdMd3syQao50eni6LCG2HgKLA@mail.gmail.com> ("João Távora"'s message of "Sat, 10 Nov 2012 23:07:05 +0000")
> (let ((saved (symbol-function 'foo)))
> (unwind-protect
> (progn
> (fset 'foo #'(lambda ()
> (message "bar!")))
> (meta-foo))
> (fset 'foo saved)))
Same problem as with flet: the redefinition is hard to find, dynamically
scoped, etc...
Better use
(defvar foo-bar nil)
(defadvice foo (around blabla activate)
(if foo-bar (message "bar!") ad-do-it))
and then
...
(let ((foo-bar t))
...)
So C-h f foo RET will tell you about the redefinition and you can
recover the non-redefined behavior with a simple (setq foo-bar nil).
Stefan
next prev parent reply other threads:[~2012-11-10 23:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 12:36 problems with flet on last emacs Thierry Volpiatto
2012-06-27 12:49 ` Pascal J. Bourguignon
2012-06-27 15:29 ` Stefan Monnier
2012-06-27 16:38 ` Thierry Volpiatto
2012-06-28 6:53 ` Ivan Kanis
2012-06-28 7:31 ` Thierry Volpiatto
2012-06-29 5:42 ` Ivan Kanis
2012-06-29 6:17 ` Thierry Volpiatto
2012-07-12 8:22 ` Ivan Kanis
2012-07-12 14:40 ` Stefan Monnier
2012-07-12 16:44 ` Ivan Kanis
2012-11-09 17:41 ` João Távora
2012-11-09 19:23 ` Stefan Monnier
2012-11-10 14:12 ` João Távora
2012-11-10 22:46 ` Stefan Monnier
2012-11-10 23:07 ` João Távora
2012-11-10 23:38 ` Stefan Monnier [this message]
2012-11-12 8:02 ` Andreas Röhler
2012-06-27 13:24 ` Tassilo Horn
2012-06-27 13:43 ` Thierry Volpiatto
2012-06-27 14:27 ` Thierry Volpiatto
2012-06-27 14:42 ` Pascal J. Bourguignon
2012-06-27 15:55 ` Tassilo Horn
2012-06-27 16:29 ` Pascal J. Bourguignon
2012-06-27 19:42 ` Tassilo Horn
2012-06-27 19:46 ` Pascal J. Bourguignon
2012-06-27 15:01 ` Andreas Schwab
2012-06-27 16:03 ` Tassilo Horn
2012-06-27 16:22 ` Glenn Morris
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