From: Michael Heerdegen <michael_heerdegen@web.de>
Date: Fri, 16 Feb 2024 21:07:18 +0000 (+0100)
Subject: Don't warn about _ not left unused in if-let and alike
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=5547b8a82d37004570a1dbc24803e5f5738ba20c;p=emacs.git

Don't warn about _ not left unused in if-let and alike

The macro expansions did not leave a variable _ unused; this triggered
an irritating compiler warning (bug#69108).

* lisp/subr.el (internal--build-binding): Handle bindings of the form
(_ EXPR) separately.

(cherry picked from commit e680827e814e155cf79175d87ff7c6ee3a08b69a)
---

diff --git a/lisp/subr.el b/lisp/subr.el
index 705f53219d7..6656d4c083d 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -2581,6 +2581,8 @@ Affects only hooks run in the current buffer."
           (list binding binding))
          ((null (cdr binding))
           (list (make-symbol "s") (car binding)))
+         ((eq '_ (car binding))
+          (list (make-symbol "s") (cadr binding)))
          (t binding)))
   (when (> (length binding) 2)
     (signal 'error