Replace `iff' in doc-strings and comments.

4 files changed, 4 insertions, 4 deletions

diff --git a/lisp/emacs-lisp/byte-opt.el b/lisp/emacs-lisp/byte-opt.el
index 811dc699bd0..82a5cf0a75a 100644
--- a/lisp/emacs-lisp/byte-opt.el
+++ b/lisp/emacs-lisp/byte-opt.el
@@ -564,7 +564,7 @@
 	       (cons fn args)))))))
 
 (defun byte-optimize-all-constp (list)
-  "Non-nil iff all elements of LIST satisfy `byte-compile-constp'."
+  "Non-nil if all elements of LIST satisfy `byte-compile-constp'."
   (let ((constant t))
     (while (and list constant)
       (unless (byte-compile-constp (car list))
diff --git a/lisp/emacs-lisp/easymenu.el b/lisp/emacs-lisp/easymenu.el
index 5d53a70531c..030e1bccbd4 100644
--- a/lisp/emacs-lisp/easymenu.el
+++ b/lisp/emacs-lisp/easymenu.el
@@ -539,7 +539,7 @@ earlier by `easy-menu-define' or `easy-menu-create-menu'."
     (easy-menu-do-add-item map item before)))
 
 (defun easy-menu-item-present-p (map path name)
-  "In submenu of MAP with path PATH, return non-nil iff item NAME is present.
+  "In submenu of MAP with path PATH, return non-nil if item NAME is present.
 MAP and PATH are defined as in `easy-menu-add-item'.
 NAME should be a string, the name of the element to be looked for."
   (easy-menu-return-item (easy-menu-get-map map path) name))
diff --git a/lisp/emacs-lisp/rx.el b/lisp/emacs-lisp/rx.el
index cf915c1b15d..45a1e9c8d10 100644
--- a/lisp/emacs-lisp/rx.el
+++ b/lisp/emacs-lisp/rx.el
@@ -554,7 +554,7 @@ appended to R will apply to all of R.  For example, \"a\"
 
 This function may return false negatives, but it will not
 return false positives.  It is nevertheless useful in
-situations where an efficiency shortcut can be taken iff a
+situations where an efficiency shortcut can be taken only if a
 regexp is atomic.  The function can be improved to detect
 more cases of atomic regexps.  Presently, this function
 detects the following categories of atomic regexp;
diff --git a/lisp/emacs-lisp/unsafep.el b/lisp/emacs-lisp/unsafep.el
index bf52acef382..d7dd1f19300 100644
--- a/lisp/emacs-lisp/unsafep.el
+++ b/lisp/emacs-lisp/unsafep.el
@@ -212,7 +212,7 @@ of symbols with local bindings."
 
 
 (defun unsafep-function (fun)
-  "Return nil iff FUN is a safe function.
+  "Return nil if FUN is a safe function.
 \(either a safe lambda or a symbol that names a safe function).  Otherwise
 result is a reason code."
   (cond