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Advice functions: required args that byte-compiler warns are unused
From: |
Drew Adams |
Subject: |
Advice functions: required args that byte-compiler warns are unused |
Date: |
Wed, 3 Nov 2021 17:53:09 +0000 |
I'm wondering how you deal with this - what's a
good way.
I have an advice function `my-foo-after-advice',
which I use as an :after advice for function `foo':
(defun my-foo-after-advice (&rest args)
"..."
(ignore args) ; Quiet the byte-compiler.
(do-stuff-that-doesnt-refer-to-ARGS))
Suppose function `foo' requires 3 arguments:
(defun foo (a b c) ...)
An :after advice needs to accept the same args as
the function it advises. But the byte-compiler
warns "Unused lexical argument 'args'" (naturally).
So I've been adding an `(ignore args)'.
Is there a better way to suppress such a warning?
I looked for a `declare' possibility for this,
which would be a declaration to the byte-compiler
rather than a runtime operation.
Of course `ignore' doesn't cost much here, but it
seems like we should be able to keep info for the
compiler separate from code that gets run.
Hope I'm missing something simple.
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- Advice functions: required args that byte-compiler warns are unused,
Drew Adams <=