(format-annotate-single-property-change,

format-annotate-atomic-property-change): move code that interprets
nil as 0 inside test that property is numeric.

diff --git a/lisp/format.el b/lisp/format.el
index cfb6e4ca51458e3908fc84ac0795d3cbb571e48b..237c7b2964e838e265633dc4d6a88d3195f1f386 100644 (file)
--- a/lisp/format.el
+++ b/lisp/format.el
@@ -813,11 +813,6 @@ Annotations to open and to close are returned as a dotted pair."
        default)
     (if (not prop-alist)
        nil
-      ;; If property is numeric, nil means 0
-      (cond ((and (numberp old) (null new))
-            (setq new 0))
-           ((and (numberp new) (null old))
-            (setq old 0)))
       ;; If either old or new is a list, have to treat both that way.
       (if (or (consp old) (consp new))
          (let* ((old (if (listp old) old (list old)))
@@ -846,13 +841,21 @@ OLD and NEW are the values."
   (let (num-ann)
     ;; If old and new values are numbers,
     ;; look for a number in PROP-ALIST.
-    (if (and (numberp old) (numberp new))
+    (if (and (or (null old) (numberp old))
+            (or (null new) (numberp new)))
        (progn
          (setq num-ann prop-alist)
          (while (and num-ann (not (numberp (car (car num-ann)))))
            (setq num-ann (cdr num-ann)))))
     (if num-ann
-       ;; Numerical annotation - use difference
+       ;; Numerical annotation - use difference
+
+       ;; If property is numeric, nil means 0
+       (cond ((and (numberp old) (null new))
+              (setq new 0))
+             ((and (numberp new) (null old))
+              (setq old 0)))
+
        (let* ((entry (car num-ann))
               (increment (car entry))
               (n (ceiling (/ (float (- new old)) (float increment))))