From: Lars Ingebrigtsen <larsi@gnus.org>
Date: Fri, 30 Oct 2020 12:50:49 +0000 (+0100)
Subject: Fix fontifying of ::= in Makefiles
X-Git-Tag: emacs-28.0.90~5338
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=32c5f1c7a8da0c0dd9de126c966af8c7cd382970;p=emacs.git

Fix fontifying of ::= in Makefiles

* lisp/progmodes/make-mode.el (makefile-match-dependency): Don't
fontify the POSIX immediate assignment operator ::= as a
dependency (bug#44319).
---

diff --git a/lisp/progmodes/make-mode.el b/lisp/progmodes/make-mode.el
index 01cc330dc2e..ac3d0817097 100644
--- a/lisp/progmodes/make-mode.el
+++ b/lisp/progmodes/make-mode.el
@@ -1721,7 +1721,9 @@ matched in a rule action."
       (while (progn (skip-chars-forward makefile-dependency-skip bound)
 		    (< (point) (or bound (point-max))))
 	(forward-char)
-	(or (eq (char-after) ?=)
+        ;; The GNU immediate assignment operator is ":=", while the
+        ;; POSIX operator is "::=".
+	(or (looking-at ":?=")
 	    (get-text-property (1- (point)) 'face)
 	    (if (> (line-beginning-position) (+ (point-min) 2))
 		(eq (char-before (line-end-position 0)) ?\\))