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-rw-r--r--lisp/progmodes/cc-defs.el6
1 files changed, 3 insertions, 3 deletions
diff --git a/lisp/progmodes/cc-defs.el b/lisp/progmodes/cc-defs.el
index cd4ed6b352e..d20e3ef32d9 100644
--- a/lisp/progmodes/cc-defs.el
+++ b/lisp/progmodes/cc-defs.el
@@ -81,7 +81,7 @@
(progn
(require 'font-lock)
(let (font-lock-keywords)
- (font-lock-compile-keywords '("a\\`")) ; doesn't match anything.
+ (font-lock-compile-keywords (list regexp-unmatchable))
font-lock-keywords))))
@@ -1890,8 +1890,8 @@ when it's needed. The default is the current language taken from
;; Produce a regexp that doesn't match anything.
(if adorn
- "\\(a\\`\\)"
- "a\\`")))
+ (concat "\\(" regexp-unmatchable "\\)")
+ regexp-unmatchable)))
(put 'c-make-keywords-re 'lisp-indent-function 1)