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-rw-r--r--lisp/progmodes/ruby-mode.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index 74edf7a680f..3c20279600e 100644
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -2152,7 +2152,7 @@ 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.