Keep interactive uses of 'recenter' backward compatible (Bug#31325)

* window.c (Frecenter): Change the interactive spec to always pass
a non-nil value to the REDISPLAY argument when called interactively.
* window.el (recenter-top-bottom): Make sure 'recenter's second
argument is non-nil everywhere.
* windows.texi (Textual Scrolling): Update documentation of
'recenter'.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/window.c b/src/window.c
index d3c72570dd1..422b06a49fe 100644
--- a/src/window.c
+++ b/src/window.c
@@ -5901,7 +5901,7 @@ displayed_window_lines (struct window *w)
 }
 
 
-DEFUN ("recenter", Frecenter, Srecenter, 0, 2, "P",
+DEFUN ("recenter", Frecenter, Srecenter, 0, 2, "P\np",
        doc: /* Center point in selected window and maybe redisplay frame.
 With a numeric prefix argument ARG, recenter putting point on screen line ARG
 relative to the selected window.  If ARG is negative, it counts up from the
@@ -5913,7 +5913,7 @@ non-nil, also erase the entire frame and redraw it (when
 `auto-resize-tool-bars' is set to `grow-only', this resets the
 tool-bar's height to the minimum height needed); if
 `recenter-redisplay' has the special value `tty', then only tty frames
-are redrawn.
+are redrawn.  Interactively, REDISPLAY is always non-nil.
 
 Just C-u as prefix means put point in the center of the window
 and redisplay normally--don't erase and redraw the frame.  */)