* lisp/progmodes/ruby-mode.el (ruby-font-lock-keywords): Fontify

multiple adjacent negation chars.

Fixes: debbugs:17004

2 files changed, 6 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index e3589f888a9..99626641b08 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2014-03-13  Dmitry Gutov  <dgutov@yandex.ru>
+
+        * progmodes/ruby-mode.el (ruby-font-lock-keywords): Fontify
+        multiple adjacent negation chars.  (Bug#17004)
+
 2014-03-13  Tom Willemse  <tom@ryuslash.org>  (tiny change)
 
         * emacs-lisp/package.el (package--prepare-dependencies):
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index a5d8285c98e..fe9346047c6 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -2127,7 +2127,7 @@ See `font-lock-syntax-table'.")
     (ruby-match-expression-expansion
      2 font-lock-variable-name-face t)
     ;; Negation char.
-    ("[^[:alnum:]_]\\(!\\)[^=]"
+    ("\\(?:^\\|[^[:alnum:]_]\\)\\(!+\\)[^=]"
      1 font-lock-negation-char-face)
     ;; Character literals.
     ;; FIXME: Support longer escape sequences.