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Re: How do you scroll the screen without moving the cursor ? (theC-E and


From: Paul R
Subject: Re: How do you scroll the screen without moving the cursor ? (theC-E and C-Y keys in vi)
Date: Fri, 03 Oct 2008 18:09:20 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux)

Chris> If that's not what you have in mind, I've been using these for
Chris> some time. They keep the cursor in place and move the text
Chris> underneath it.

Chris> (defun scroll-down-in-place (n) (interactive "p")
Chris> (previous-line n) (scroll-down n))

Chris> (defun scroll-up-in-place (n) (interactive "p") (next-line n)
Chris> (scroll-up n))

To avoid weird behaviour when seeing ends of your buffer, use the code
below.

(global-set-key [down] (lambda ()
                         (interactive)
                         (next-line 1)
                         (unless (eq (window-end) (point-max))
                           (scroll-up 1))))
(global-set-key [up] (lambda ()
                       (interactive)
                       (previous-line 1)
                       (unless (eq (window-start) (point-min))
                         (scroll-down 1))))

-- 
  Paul




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