   (dolist (pair ros-topic-last-hz-rate)
     (let ((topic (car pair)))
       (when (string-match topic-regexp topic)
-	(stop-hz-tracker topic)))))
+        (stop-hz-tracker topic)))))
 
 
 (defun echo-ros-topic (topic)

(defun ros-completing-read-pkg-file (prompt &optional default-pkg)
  (if (eq ros-completion-function 'ido-completing-read)
      (ros-ido-completing-read-pkg-file prompt default-pkg)
    (funcall ros-completion-function prompt ros-package-completor nil nil (list default-pkg))))

;; Ido completion
(defun ros-ido-completing-read-pkg-file (prompt &optional default-pkg)

  (interactive (list (ros-completing-read-pkg-file "Enter ros path: ")))
  (multiple-value-bind (package dir-prefix dir-suffix) (parse-ros-file-prefix package-name)
    (let* ((package-dir (ros-package-dir package))
           (path (if dir-prefix (concat package-dir dir-prefix dir-suffix) package-dir)))
      (if path
          (let ((name (format "roslaunch:%s/%s" package dir-suffix)))
            (if (rosemacs/contains-running-process name)
                (warn "Roslaunch buffer %s already exists: not creating a new one." name)
              (let ((buf (get-buffer-create name)))
