Replace `iff' in doc-strings and comments.

lisp/mh-e/mh-folder.el

@@ -1495,7 +1495,7 @@ function doesn't recenter the folder buffer."
 
 (defun mh-update-unseen ()
   "Synchronize the unseen sequence with MH.
-Return non-nil iff the MH folder was set.
+Return non-nil if the MH folder was set.
 The hook `mh-unseen-updated-hook' is called after the unseen sequence
 is updated."
   (if mh-seen-list

lisp/mh-e/mh-letter.el

@@ -844,7 +844,7 @@ body."
 (defun mh-position-on-field (field &optional ignored)
   "Move to the end of the FIELD in the header.
 Move to end of entire header if FIELD not found.
-Returns non-nil iff FIELD was found.
+Returns non-nil if FIELD was found.
 The optional second arg is for pre-version 4 compatibility and is
 IGNORED."
   (cond ((mh-goto-header-field field)

lisp/mh-e/mh-show.el

@@ -161,7 +161,7 @@ displayed."
 (defun mh-showing-mode (&optional arg)
   "Change whether messages should be displayed.
 
-With ARG, display messages iff ARG is positive."
+With ARG, display messages if ARG is positive, otherwise don't display them."
   (setq mh-showing-mode
         (if (null arg)
             (not mh-showing-mode)

lisp/url/ChangeLog

@@ -1,3 +1,8 @@
+2007-08-08  Glenn Morris  <rgm@gnu.org>
+
+	* url-auth.el, url-cache.el, url-dav.el, url-file.el, vc-dav.el:
+	Replace `iff' in doc-strings and comments.
+
 2007-07-25  Glenn Morris  <rgm@gnu.org>
 
 	* Relicense all FSF files to GPLv3 or later.