 
 (defvar-local intero-targets (list)
   "Targets used for the stack process.")
+
+(defvar-local intero-start-time nil
+  "Start time of the stack process.")
 
 (defvar-local intero-source-buffer (list)
   "Buffer from which Intero was first requested to start.")


(defun intero-check-reuse-last-results (mod-time cont)
  "If MOD-TIME is not new, return non-nil and call CONT with `intero-check-last-results'."
  (let ((reuse (and intero-check-last-mod-time (equal mod-time intero-check-last-mod-time))))
    (progn
      (when reuse
        (funcall cont 'finished intero-check-last-results))

      (with-current-buffer buffer
        (erase-buffer)
        (setq intero-targets targets)
        (setq intero-start-time (current-time))
        (setq intero-source-buffer source-buffer)
        (setq intero-arguments arguments)
        (setq intero-starting t)
