Re: scroll-preserve-screen-position not working

[martin rudalics <rudalics@gmx.at>]

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 > the scroll-preserve-screen-position variable had been
 > introduced some time ago in emacs 20. It allows to
 > keep the cursor in its position in a buffer when scrolling.
 > When it is not set, the cursor position is moved when
 > scrolling so as to make it always visible.
 > In emacs 21 (and alas in 22) this variable has no effect,
 > at least when emacs in running in Windows XP and also in
 > Vista.

Thank you for your report.

Customization for this variable was broken.  Could you please apply the
attached patch and tell me whether it gives good results.


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*** cus-start.el	Tue Jan 23 06:40:00 2007
--- cus-start.el	Sat Apr  7 13:41:38 2007
***************
*** 338,344 ****
  	     (split-height-threshold windows integer)
  	     (window-min-height windows integer)
  	     (window-min-width windows integer)
! 	     (scroll-preserve-screen-position windows boolean)
  	     (display-buffer-reuse-frames windows boolean "21.1")
  	     ;; xdisp.c
  	     (scroll-step windows integer)
--- 338,348 ----
  	     (split-height-threshold windows integer)
  	     (window-min-height windows integer)
  	     (window-min-width windows integer)
! 	     (scroll-preserve-screen-position
! 	      windows (choice
! 		       (const :tag "Off (nil)" :value nil)
! 		       (const :tag "Full screen (t)" :value t)
! 		       (other :tag "Always")))
  	     (display-buffer-reuse-frames windows boolean "21.1")
  	     ;; xdisp.c
  	     (scroll-step windows integer)

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