Index: misc/ruby-mode.el
===================================================================
--- misc/ruby-mode.el	(revision 27909)
+++ misc/ruby-mode.el	(working copy)
@@ -524,7 +524,7 @@
          (t
           (setq in-string (point))
           (goto-char end))))
-       ((looking-at "/=") 
+       ((looking-at "/=")
         (goto-char pnt))
        ((looking-at "/")
         (cond
@@ -779,7 +779,7 @@
           (setq indent (ruby-indent-size (current-column) (nth 2 state))))
          (t
           (setq indent (+ (current-column) ruby-indent-level)))))
-       
+
        ((and (nth 2 state) (< (nth 2 state) 0)) ; in negative nest
         (setq indent (ruby-indent-size (current-column) (nth 2 state)))))
       (when indent
@@ -1115,7 +1115,7 @@
                (concat "^[ \t]*\\(def\\|class\\|module\\)[ \t]+"
                        "\\("
                        ;; \\. and :: for class method
-                        "\\([A-Za-z_]" ruby-symbol-re "*\\|\\.\\|::" "\\)" 
+                        "\\([A-Za-z_]" ruby-symbol-re "*\\|\\.\\|::" "\\)"
                         "+\\)")
                nil t)
               (progn
@@ -1177,7 +1177,7 @@
           ("\\(#\\)[{$@]" 1 (1 . nil))
           ;; the last $', $", $` in the respective string is not variable
           ;; the last ?', ?", ?` in the respective string is not ascii code
-          ("\\(^\\|[\[ \t\n<+\(,=]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)"
+          ("\\(^\\|[\[ \t\n<+\(,=:]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)"
            (2 (7 . nil))
            (4 (7 . nil)))
           ;; $' $" $` .... are variables