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bug#18014: 24.3; Unused Lexical argument warning, when argument is used


From: Matthew Fidler
Subject: bug#18014: 24.3; Unused Lexical argument warning, when argument is used in a function...
Date: Mon, 14 Jul 2014 14:46:04 -0500

Easy enough.  Put these in a directory, say ~/emacs-bug-1801 and run the following command:
 
emacs -Q --batch -L . --eval             \
     "(progn                                \
       (setq byte-compile-error-on-warn t)  \
       (batch-byte-compile))" *.el
 
 
On Emacs 24.3 the following warning will occur:
 
In toplevel form:
bug.el:10:1:Warning: Unused lexical argument `key' <<--- Incorrect; key is a used lexical argument
Wrote e:/EmacsPortable.App/Data/src/ergoemacs-mode/bug.elc
In toplevel form:
bug2.el:10:1:Warning: argument `_key' not left unused <<--- Correct; _key is a used lexical argument
Wrote e:/EmacsPortable.App/Data/src/ergoemacs-mode/bug2.elc
 
Also on emacs 24.3, even though batch-byte-compile-error-on-warn is set to t, it will ignore the errors, which is not what I expect when I set this option.
On Emacs trunk (24.4) it will not ignore the error but cause the make to fail.
 
Matt
 
 
 
Type the following
 
 


On Mon, Jul 14, 2014 at 11:18 AM, Eli Zaretskii <address@hidden> wrote:
> Date: Mon, 14 Jul 2014 11:01:12 -0500
> From: Matthew Fidler <address@hidden>
> Cc: address@hidden
>
> You probably downloaded the version with lexical binding disabled.
>
> Sorry, I should have linked to the version with lexical binding enabled.

So how about posting a complete, self-contained recipe that could be
used to reproduce the problem?

TIA

Attachment: bug.el
Description: Text document

Attachment: bug2.el
Description: Text document


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