bug#18014: 24.3; Unused Lexical argument warning, when argument is used in a function...

[Matthew Fidler]

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 <eliz@gnu.org> wrote:

> Date: Mon, 14 Jul 2014 11:01:12 -0500
> From: Matthew Fidler <matthew.fidler@gmail.com>
> Cc: 18014@debbugs.gnu.org

>
> 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

bug.el
Description: Text document

bug2.el
Description: Text document