   (save-excursion
     (beginning-of-line)
     (looking-at line-pattern))))
-  
+
 
 (defun diffscuss-calibrate-source-line (old-or-new)
   "Deduce what line in the source file the point is on."

      (looking-at line-pattern))))

(defun diffscuss-line-type-mismatch (old-or-new)
  "True if the line starts with + and old-or-new is 'old', or line starts with - 
and old or new is 'new'."
  (let ((line-pattern nil))
    (if (string= old-or-new "old")


(defun diffscuss-get-source-file (old-or-new)
  "Get the name of the source file."
  (save-excursion
    (diffscuss-move-past-meta-lines)
    (diffscuss-source-file-impl old-or-new)))

