Subject: bug#12367: 24.2.50; cl-defun: unused key args are picked up as unused variables

From: Stefan Monnier <[email-masked]>
Date: Thu, 06 Sep 2012 11:35:42 -0400

>     ;; -*- lexical-binding: t -*-
>     (require 'cl-lib)
>     (cl-defun rms (&key foo))

I've installed a patch on trunk so that you can use

   (cl-defun rms (&key _foo))

instead.

        Stefan