From: Alan Mackenzie <acm@muc.de>
Date: Sun, 27 Aug 2017 10:38:47 +0000 (+0000)
Subject: Amend the CC Mode macro cache to cope with changes at the macro start
X-Git-Tag: emacs-26.0.90~341
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=a2c967e28ba53d282764bdcc624e64b6c3b7bb06;p=emacs.git

Amend the CC Mode macro cache to cope with changes at the macro start

Fixes bug #28233.

* lisp/progmodes/cc-engine.el (c-invalidate-macro-cache): Fix an off-by-1
error.
---

diff --git a/lisp/progmodes/cc-engine.el b/lisp/progmodes/cc-engine.el
index 59dc96af030..d20e575a928 100644
--- a/lisp/progmodes/cc-engine.el
+++ b/lisp/progmodes/cc-engine.el
@@ -248,7 +248,7 @@
   ;; parameters.  END isn't used.
   (cond
    ((null c-macro-cache))
-   ((< beg (car c-macro-cache))
+   ((<= beg (car c-macro-cache))
     (setq c-macro-cache nil
 	  c-macro-cache-start-pos nil
 	  c-macro-cache-syntactic nil