3 files changed, 8 insertions, 4 deletions

diff --git a/doc/emacs/ChangeLog b/doc/emacs/ChangeLog
index fbc7da4b1c7..2af2d5daa70 100644
--- a/doc/emacs/ChangeLog
+++ b/doc/emacs/ChangeLog
@@ -1,6 +1,8 @@
 2013-12-22  Xue Fuqiao  <xfq.free@gmail.com>
 
-        * search.texi (Symbol Search): Document `isearch-forward-symbol-at-point'.
+        * search.texi (Special Isearch):
+        (Query Replace): Document negative argument of replacement commands.
+        (Symbol Search): Document `isearch-forward-symbol-at-point'.
 
         * files.texi (File Conveniences): Document `image-next-file' and `image-previous-file'.
 
diff --git a/doc/emacs/search.texi b/doc/emacs/search.texi
index 16eed9b16dc..a7c40000233 100644
--- a/doc/emacs/search.texi
+++ b/doc/emacs/search.texi
@@ -272,8 +272,8 @@ current buffer afterwards.
 @kindex M-% @r{(Incremental search)}
   Typing @kbd{M-%} in incremental search invokes @code{query-replace}
 or @code{query-replace-regexp} (depending on search mode) with the
-current search string used as the string to replace.  @xref{Query
-Replace}.
+current search string used as the string to replace.  A negative
+prefix argument means to replace backward.  @xref{Query Replace}.
 
 @kindex M-TAB @r{(Incremental search)}
   Typing @kbd{M-@key{TAB}} in incremental search invokes
@@ -1243,7 +1243,8 @@ occurrence and asks you whether to replace it.  Aside from querying,
 (@pxref{Unconditional Replace}).  In particular, it preserves case
 provided @code{case-replace} is non-@code{nil}, as it normally is
 (@pxref{Replacement and Case}).  A numeric argument means to consider
-only occurrences that are bounded by word-delimiter characters.
+only occurrences that are bounded by word-delimiter characters.  A
+negative prefix argument replaces backward.
 
 @kindex C-M-%
 @findex query-replace-regexp
diff --git a/etc/NEWS b/etc/NEWS
index c52e596e56e..a6eedaf1b47 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -627,6 +627,7 @@ when it's nil).
 *** `query-replace' skips invisible text when `search-invisible' is nil,
 and opens overlays with hidden text when `search-invisible' is `open'.
 
++++
 *** A negative prefix arg of replacement commands replaces backward.
 `M-- M-%' replaces a string backward, `M-- C-M-%' replaces a regexp
 backward, `M-s w words M-- M-%' replaces a sequence of words backward.