bug#8711: 24.0.50; binding _ to unused values with lexical-binding

[Helmut Eller <eller.helmut@gmail.com>]

* Stefan Monnier [2011-05-24 00:56] writes:

>>> It can insert (ignore nil) instead which should have the same effect but
>>> without triggering the other warning with lexical-binding.
>
>> Indeed.  But I quickly run into another case where that doesn't help:
>
>> (defun foo (x) (destructuring-bind (y &rest _) x y))
>
> I don't see any warning for this code.  What warning do you get?

;; -*- lexical-binding: t -*-
(defun foo (x) (destructuring-bind (y &rest _) x y))

x.el:2:1:Warning: variable `_' not left unused


Helmut