Stop recognizing :#{} as symbol in ruby-mode

* lisp/progmodes/ruby-mode.el (ruby-font-lock-keywords): Remove
the weird part that recognized colon followed by interpolation
construct without quotes (e.g. ':#{abc}') as symbol, which is just a
syntax error in any modern version of Ruby.  Fix nearby bug reference.

diff --git a/lisp/progmodes/ruby-mode.el b/lisp/progmodes/ruby-mode.el
index b846dfe91914312f1f20ca427953a07fcdeb48a1..914703d5f1be8ce06fccd585c65e9c80d56f6e2f 100644 (file)
--- a/lisp/progmodes/ruby-mode.el
+++ b/lisp/progmodes/ruby-mode.el
@@ -2188,11 +2188,11 @@ See `font-lock-syntax-table'.")
      (2 font-lock-constant-face)
      (3 (unless (and (eq (char-before (match-end 3)) ?=)
                      (eq (char-after (match-end 3)) ?>))
-          ;; bug#18466
+          ;; bug#18644
           font-lock-constant-face)
         nil t))
     ;; Symbols with special characters.
-    ("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\|#{[^}\n\\\\]*\\(\\\\.[^}\n\\\\]*\\)*}\\)\\)"
+    ("\\(^\\|[^:]\\)\\(:\\([-+~]@?\\|[/%&|^`]\\|\\*\\*?\\|<\\(<\\|=>?\\)?\\|>[>=]?\\|===?\\|=~\\|![~=]?\\|\\[\\]=?\\)\\)"
      2 font-lock-constant-face)
     ;; Special globals.
     (,(concat "\\$\\(?:[:\"!@;,/\\._><\\$?~=*&`'+0-9]\\|-[0adFiIlpvw]\\|"