Re: Keeping the point at the same position in multiple buffers

[Andreas Politz]

Xah wrote:
> On Aug 21, 7:39 am, Corey Foote <coreyfo...@hotmail.com> wrote:
> > Hi everybody,
> >
> > When editing several files in Emacs, each in its own buffer, each buffer has 
> > its own point location. I have Emacs displaying two buffers, each in it's own 
> > window. I was wondering if there's an easy way to make it so that each of these 
> > buffers will keep the point at the same place in both buffers (or at least on 
> > the same line) even though this is not the default behavior.
> >
> > So, for example, when I press C-n in the current buffer, the other buffer will 
> > also move it's point to the next line.
>
> You can try “Alt+x 2C-two-columns” (shortuct Ctrl+x 6 2). This split a
> window into 2 vertical columns. Page up/down one will also page up/
> down the other. However, cursor doesn't follow.
>
> related is a Alt+x follow-mode, which is for viewing one long file in
> 2 verticle frames as if you have a long monitor.
>
> i'm pretty sure what you want is already implemented somewhere.
>
>   Xah
> ∑ http://xahlee.org/
>
> ☄

Here it is :

---
scroll-all-mode is an interactive compiled Lisp function in `scroll-all.el'.
(scroll-all-mode &optional arg)

Toggle Scroll-All minor mode.
With arg, turn Scroll-All minor mode on if arg is positive, off otherwise.
When Scroll-All mode is on, scrolling commands entered in one window
apply to all visible windows in the same frame.
---

Looking at the code it should be easy to extend this to other commands
(like forward-char).


-ap