diff options
Diffstat (limited to 'lisp/calc/calc-units.el')
| -rw-r--r-- | lisp/calc/calc-units.el | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/lisp/calc/calc-units.el b/lisp/calc/calc-units.el index 8f4c79e3f0..dcbf845c37 100644 --- a/lisp/calc/calc-units.el +++ b/lisp/calc/calc-units.el @@ -415,18 +415,19 @@ If EXPR is nil, return nil." (defun math-put-default-units (expr) "Put the units in EXPR in the default units table." - (let* ((units (math-get-units expr)) - (standard-units (math-get-standard-units expr)) + (let ((units (math-get-units expr))) + (unless (eq units 1) + (let* ((standard-units (math-get-standard-units expr)) (default-units (gethash standard-units math-default-units-table))) - (cond - ((not default-units) - (puthash standard-units (list units) math-default-units-table)) - ((not (equal units (car default-units))) - (puthash standard-units - (list units (car default-units)) - math-default-units-table))))) + (cond + ((not default-units) + (puthash standard-units (list units) math-default-units-table)) + ((not (equal units (car default-units))) + (puthash standard-units + (list units (car default-units)) + math-default-units-table))))))) (defun calc-convert-units (&optional old-units new-units) |