1 files changed, 4 insertions, 1 deletions

diff --git a/lispref/minibuf.texi b/lispref/minibuf.texi
index 3ac750d76a1..1455c63fe34 100644
--- a/lispref/minibuf.texi
+++ b/lispref/minibuf.texi
@@ -118,7 +118,7 @@ middle of a Lisp function.  Instead, do all minibuffer input as part of
 reading the arguments for a command, in the @code{interactive}
 specification.  @xref{Defining Commands}.
 
-@defun read-from-minibuffer prompt-string &optional initial-contents keymap read hist default inherit-input-method
+@defun read-from-minibuffer prompt-string &optional initial-contents keymap read hist default inherit-input-method keep-all
 This function is the most general way to get input through the
 minibuffer.  By default, it accepts arbitrary text and returns it as a
 string; however, if @var{read} is non-@code{nil}, then it uses
@@ -170,6 +170,9 @@ the setting of @code{enable-multibyte-characters} (@pxref{Text
 Representations}) from whichever buffer was current before entering the
 minibuffer.
 
+If @var{keep-all} is non-@code{nil}, even empty and duplicate inputs
+are added to the history list.
+
 Use of @var{initial-contents} is mostly deprecated; we recommend using
 a non-@code{nil} value only in conjunction with specifying a cons cell
 for @var{hist}.  @xref{Initial Input}.