* doc/misc/calc.texi (Basic Operations on Units): Fix

  cross-reference.

* calc/calc-units.el (calc-convert-units): Fix the way that default
  new units are stored.

2 files changed, 12 insertions, 5 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 4f24f5b2c8c..c8a4a06f28d 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2013-03-08  Jay Belanger  <jay.p.belanger@gmail.com>
+
+	* calc/calc-units.el (calc-convert-units): Fix the way that default
+	new units are stored.
+
 2013-03-07  Karl Fogel  <kfogel@red-bean.com>
 
 	* bookmark.el: Define a face to highlight bookmark names in
diff --git a/lisp/calc/calc-units.el b/lisp/calc/calc-units.el
index b334d7b3b45..335980af4dd 100644
--- a/lisp/calc/calc-units.el
+++ b/lisp/calc/calc-units.el
@@ -503,11 +503,13 @@ If COMP or STD is non-nil, put that in the units table instead."
            (comp (eq (car-safe units) '+)))
        (unless (or unew std)
          (error "No units specified"))
-       (let ((res
-              (if std
-                  (math-simplify-units (math-to-standard-units expr (nth 1 std)))
-                (math-convert-units expr units (and uoldname (not (equal uoldname "1")))))))
-         (math-put-default-units res (if comp units))
+       (let* ((noold (and uoldname (not (equal uoldname "1"))))
+              (res
+               (if std
+                   (math-simplify-units (math-to-standard-units expr (nth 1 std)))
+                 (math-convert-units expr units noold))))
+         (unless std
+           (math-put-default-units (if noold units res) (if comp units)))
          (calc-enter-result 1 "cvun" res))))))
 
 (defun calc-autorange-units (arg)