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bug#12895: 24.3.50; Replacement for flet
From: |
Antoine Levitt |
Subject: |
bug#12895: 24.3.50; Replacement for flet |
Date: |
Thu, 15 Nov 2012 16:01:58 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
11/15/2012 15:46, Stefan Monnier
>> (defun something ()
>> (message "hi"))
>> (letf ((message (lambda () (&rest args) nil)))
>> (something))
>> Is this because message is a built-in?
>
> No, it's because what you want is not a local function, but an override
> of an existing function.
Ah, sorry. Letf redirects to cl-letf, which says
Temporarily bind to PLACEs. This is the analogue of `let', but with
generalized variables
If it excludes overrides, I think it should say so explicitely. Right
now I'm led to think it's like let for functions, and I've been using
let for overriding just fine.
> Such override should be done with an advice.
Unless I'm missing something easier, using an advice would be cumbersome
(define the advice, activate it, run the function, then deactivate the
advice, protecting for errors). Would you consider un-obsoleting flet?
It isn't deprecated by either cl-flet or cl-letf.
- bug#12895: 24.3.50; Replacement for flet, Antoine Levitt, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Stefan Monnier, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet,
Antoine Levitt <=
- bug#12895: 24.3.50; Replacement for flet, Stefan Monnier, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Antoine Levitt, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Glenn Morris, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Antoine Levitt, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Glenn Morris, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Antoine Levitt, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Glenn Morris, 2012/11/15
- bug#12895: 24.3.50; Replacement for flet, Stefan Monnier, 2012/11/16
- bug#12895: 24.3.50; Replacement for flet, Antoine Levitt, 2012/11/16
- bug#12895: 24.3.50; Replacement for flet, Stefan Monnier, 2012/11/16