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Re: problems with flet on last emacs

From: Andreas Röhler
Subject: Re: problems with flet on last emacs
Date: Mon, 12 Nov 2012 09:02:53 +0100
User-agent: Mozilla/5.0 (X11; Linux i686; rv:16.0) Gecko/20121025 Thunderbird/16.0.2

Am 11.11.2012 00:38, schrieb Stefan Monnier:
(let ((saved (symbol-function 'foo)))
         (fset 'foo #'(lambda ()
                        (message "bar!")))
     (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).


Hi Stefan,

while looking with interest and delight at new features, what about make for 
that process a similar change as was made with bug-tracking.
IMO the decision-making process might be done in a more structured way than now 
- by keeping the final instances.



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