ruby-additional.el: ruby-encode-unicode

* misc/ruby-additional.el (ruby-encode-unicode): convert non-ascii
  string to \\u{} form.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45675 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

misc/ruby-additional.el

@@ -106,6 +106,18 @@ Emacs to Ruby."
                      (t (when ruby-insert-encoding-magic-comment
                           (insert "# -*- coding: " coding-system " -*-\n"))))))))
 
+     (define-key ruby-mode-map "\C-c\C-u" 'ruby-encode-unicode)
+
+     (defun ruby-encode-unicode (beg end)
+       "Convert non-ascii string in the given region to \\u{} form."
+       (interactive "r")
+       (goto-char beg)
+       (while (and (< (point) end)
+		   (re-search-forward "\\Ca+" end t))
+	 (let ((u (mapconcat (lambda (c) (format "%x" c)) (match-string-no-properties 0) " ")))
+	   (delete-region (match-beginning 0) (match-end 0))
+	   (insert "\\u{" u "}"))
+	 ))
      ))
 
 (provide 'ruby-additional)