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Re: Moving cursor on another window
From: |
martin rudalics |
Subject: |
Re: Moving cursor on another window |
Date: |
Wed, 19 Jan 2011 14:59:15 +0100 |
User-agent: |
Thunderbird 2.0.0.21 (Windows/20090302) |
> If I have multiple windows showing (with different buffers in them), and
> I want to move the cursor in a window other than the current one, how is
> that supposed to be done? The following pattern of code doesn't seem to
> work:
>
> (with-current-buffer other-buffer
> (beginning-of-buffer))
If the pattern did work as you intended, showing the same buffer
simultaneously in two windows would not make sense: Whenever you moved
the cursor in one window it would move in the other window to the same
position.
> It works if the other-buffer is not currently displayed in a window. But
> if it is displayed, the cursor remains unchanged. I guess there is some
> implicit save-excursion at the top level somewhere. I can't see how to
> get around it.
It depends on what you want. To move point in a specific window W use
(set-window-point W (point-min)). To move it in all windows showing a
buffer B use
(dolist (W (get-buffer-window-list B nil t))
(set-window-point W (point-min)))
Any of these will move the buffer's point if and only if W is the
selected window when you call `set-window-point'. If you want to make
sure that the buffer's point moves too use
(with-current-buffer B
(goto-char (point-min))
since the doc-string of `beginning-of-buffer' tells you
"Don't use this command in Lisp programs!" ;-)
martin