(toggle-auto-composition): Don't use `iff' in docstring.

diff --git a/lisp/composite.el b/lisp/composite.el
index ad43bc315d6001d666de416e62535a89a56336c5..b3270327321a24c773124efe21cb84c27fa67ae4 100644 (file)
--- a/lisp/composite.el
+++ b/lisp/composite.el
@@ -620,7 +620,7 @@ Auto Composition mode in all buffers (this is the default)."
 
 (defun toggle-auto-composition (&optional arg)
   "Change whether automatic character composition is enabled in this buffer.
-With arg, enable it iff arg is positive."
+With arg, enable it if and only if arg is positive."
   (interactive "P")
   (let ((enable (if (null arg) (not auto-composition-function)
                  (> (prefix-numeric-value arg) 0))))