bug#19129: 25.0.50; recenter-positions is missing a reference to move-to-window-line-top-bottom

[dieter@duenenhof-wilhelm.de (H. Dieter Wilhelm)]

Hello,

in the documentation for recenter-positions was forgotten that it is
also used in move-to-window-line-top-bottom.  I added below patch as an
illustration.

----------------------------------------------------------------------
Further wish:

I'm missing a separate positional defcustoms for each function -
recenter-top-bottom and move-to-window-line-top-bottom. Because in my
use cases M-r (move-to-window-line-top-bottom) is mostly applied to
pre-adjust the cursor position within the buffer before refining the
movement with an isearch-forward/backward so as to lessen statistically
the chances of multiple hits.  So I'd like to suggest something similar
to

(setq move-to-window-line-positions '(.25 middle .75))

(I'm using M-0 M-r and M-- M-r in the borderline cases as well..)

C-l on the other hand I'm using mostly for inspecting further text
around the cursor context, so

(setq recenter-positions '(top middle bottom)) 

is more appropriate in most of my cases.  (I don't want to suggest a
change of the current default of recenter-positions, just to clarify why
an additional positioning option might be worthwhile to implement)

         Dieter


diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 510cd32..c559308 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,9 @@
+2014-11-20  H. Dieter Wilhelm  <dieter@duenenhof-wilhelm.de>
+
+	Documentation fix in recenter-positions
+	* window.el (recenter-positions): Added missing reference to
+	move-to-window-line-top-bottom
+
 2014-11-20  Michael Albinus  <michael.albinus@gmx.de>
 
         Improve XEmacs compatibility.
diff --git a/lisp/window.el b/lisp/window.el
index 7d76649..a137fb6 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -7370,17 +7370,24 @@ Return non-nil if the window was shrunk, nil otherwise."
 Possible values: `top', `middle', `bottom', integer or float numbers.")
 
 (defcustom recenter-positions '(middle top bottom)
-  "Cycling order for `recenter-top-bottom'.
-A list of elements with possible values `top', `middle', `bottom',
-integer or float numbers that define the cycling order for
-the command `recenter-top-bottom'.
-
-Top and bottom destinations are `scroll-margin' lines from the true
-window top and bottom.  Middle redraws the frame and centers point
-vertically within the window.  Integer number moves current line to
-the specified absolute window-line.  Float number between 0.0 and 1.0
-means the percentage of the screen space from the top.  The default
-cycling order is middle -> top -> bottom."
+  "Cycling order for `recenter-top-bottom' and `move-to-window-line-top-bottom'.
+A list of elements with possible values `top', `middle',
+`bottom', integer or float numbers that define the cycling order
+for the command `recenter-top-bottom' and
+`move-to-window-line-top-bottom'.
+
+Top and bottom destinations are `scroll-margin' lines from the
+true window top and bottom.  For `recenter-top-bottom' position
+`middle' redraws the frame and centers point vertically within
+the window.  Integer number moves current line to the specified
+absolute window-line.  In the case of
+`move-to-window-line-top-bottom' position `middle' moves the
+cursor point vertically to the center of the window.  Integer
+number moves point to the specified absolute window-line.
+
+Float number between 0.0 and 1.0 means the percentage of the
+screen space from the top.  The default cycling order is middle
+-> top -> bottom."
   :type '(repeat (choice
 		  (const :tag "Top" top)
 		  (const :tag "Middle" middle)




In GNU Emacs 25.0.50.2 (x86_64-unknown-linux-gnu, GTK+ Version 2.24.25)
 of 2014-11-20 on vsl28t2g
Repository revision: f5d77aafa9d59c4afb13d744e67a0e4daf3be31a
Windowing system distributor `The X.Org Foundation', version 11.0.11601901
System Description:	Debian GNU/Linux testing (jessie)

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB

Important settings:
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Diff

Minor modes in effect:
  vc-parent-buffer: *vc-dir*
  whitespace-mode: t
  diff-auto-refine-mode: t
  show-paren-mode: t
  electric-pair-mode: t
  icomplete-mode: t
  delete-selection-mode: t
  display-battery-mode: t
  display-time-mode: t
  shell-dirtrack-mode: t
  server-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  buffer-read-only: t
  column-number-mode: t
  line-number-mode: t

Recent messages:
No changes between working revision and workfile
Finding changes in /usr/local/src/emacs/lisp/ChangeLog /usr/local/src/emacs/lisp/window.el...done
Type "q" in help window to restore its previous buffer, C-M-v to scroll help.
Mark set [2 times]
Saved text until " top)
 		  (const :tag "Middle" middle)
"
Quit
Mark set
Making completion list...

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Features:
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vc-cvs vc-rcs vc-dir ewoc vc vc-dispatcher cus-start cus-load
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Memory information:
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-- 
Best wishes
H. Dieter Wilhelm
Darmstadt, Germany