use my-rgrep for search-symbol

emacs.el

@@ -911,15 +911,7 @@ If called intearctively, find word at point."
       (if (and (require 'gtags nil t)
                (gtags-get-rootpath))
           (gtags-goto-tag word "s")
-        (require 'grep)
-        (if (eq 0
-                (shell-command "git rev-parse --git-dir"))
-            (compilation-start (format "git --no-pager grep -nH -e '%s'"
-                                       word)
-                               'grep-mode)
-          ;; TODO: handle ack
-          (grep (format "grep -nH -e '%s' -r ."
-                        word))))
+        (my-rgrep word))
     (message "No word at point.")
     nil))