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bug#20123: 24.4.91; Unwarranted "Unused lexical argument" for condition-
From: |
Stefan Monnier |
Subject: |
bug#20123: 24.4.91; Unwarranted "Unused lexical argument" for condition-case |
Date: |
Mon, 16 Mar 2015 15:09:13 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
> Hello,
> Here's an example code:
> (define-error 'unsupported-mode-error "Unsupported mode")
> (condition-case e
> (if (eq 'a 'a)
> (message "test")
> (signal 'unsupported-mode-error major-mode))
> (unsupported-mode-error
> (signal (car e) (cdr e)))
> (error
> (message "error")))
> As you can see, I'm trying to re-throw some of the errors, so the variable
> `e' is used
> inside `condition-case'. But I still get an "Unused lexical argument" warning.
Yes, IIRC this bug was introduced in 24.1. It should be partially fixed
in 24.4 if you set byte-compile--use-old-handlers to nil. It should be
fixed in 25.1 where this var defaults to nil.
Can you confirm?
Stefan