How to improve the pager

How to improve the pager

[projorpheon ccf]

Hello,
Are there anyone who is using the pager.el which is so great a fix to emacs 
page up/down?

But one defect is that:
if you scrolled down to the last page of the text and expected the
cursor to go to the end of the file, pager just don't respond as there
is not enough lines to scroll down one whole page?
Any idea to modify the pager.el to make it work as normal emacs behavior? 
Thanks.

;;; pager.el --- windows-scroll commands
;;; Version 2.0 - 97-10-06
;;; Copyright (C) 1992-1997 Mikael Sj鰀in (mic@docs.uu.se)
;;;
;;; Author: Mikael Sj鰀in  --  mic@docs.uu.se
;;;
;;; This file is NOT part of GNU Emacs.
;;; You may however redistribute it and/or modify it under the terms of the GNU
;;; General Public License as published by the Free Software Foundation; either
;;; version 2, or (at your option) any later version.
;;;
;;; pager.el is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.

;;; ----------------------------------------------------------------------
;;; Description:
;;;
;;; pager.el defines alternative commands to the Emacs builtins: scroll-down
;;; and scroll-up.  It also contains commands to scroll the screen one row at
;;; the time.
;;;
;;; The Emacs builtins for scrolling are worthless!  The commands in pager.el
;;; works the way the builtins should have done from the beginning.  For
;;; instance, doing a pg-up followed by a pg-down (when using pager.el) will
;;; return point to the original place.  
;;;
;;; This file has been tested under Emacs 19.34 and 20.2 but I belive it should
;;; work on most Emacs versions and Emacs derivatives.
;;;
;;; This file can be obtained from http://www.docs.uu.se/~mic/emacs.html

RD,
Jorpheon

Re: How to improve the pager

[projorpheon ccf]

:-( not in the right list?


On Sun, 3 Oct 2004 16:35:06 +0200, projorpheon ccf
<projorpheon@gmail.com> wrote:
> Hello,
> Are there anyone who is using the pager.el which is so great a fix to emacs
> page up/down?
> 
> But one defect is that:
> if you scrolled down to the last page of the text and expected the
> cursor to go to the end of the file, pager just don't respond as there
> is not enough lines to scroll down one whole page?
> Any idea to modify the pager.el to make it work as normal emacs behavior?
> Thanks.
> 
> ;;; pager.el --- windows-scroll commands
> ;;; Version 2.0 - 97-10-06
> ;;; Copyright (C) 1992-1997 Mikael Sj鰀in (mic@docs.uu.se)
> ;;;
> ;;; Author: Mikael Sj鰀in  --  mic@docs.uu.se
> ;;;
> ;;; This file is NOT part of GNU Emacs.
> ;;; You may however redistribute it and/or modify it under the terms of the GNU
> ;;; General Public License as published by the Free Software Foundation; either
> ;;; version 2, or (at your option) any later version.
> ;;;
> ;;; pager.el is distributed in the hope that it will be useful,
> ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
> ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> ;;; GNU General Public License for more details.
> 
> ;;; ----------------------------------------------------------------------
> ;;; Description:
> ;;;
> ;;; pager.el defines alternative commands to the Emacs builtins: scroll-down
> ;;; and scroll-up.  It also contains commands to scroll the screen one row at
> ;;; the time.
> ;;;
> ;;; The Emacs builtins for scrolling are worthless!  The commands in pager.el
> ;;; works the way the builtins should have done from the beginning.  For
> ;;; instance, doing a pg-up followed by a pg-down (when using pager.el) will
> ;;; return point to the original place.
> ;;;
> ;;; This file has been tested under Emacs 19.34 and 20.2 but I belive it should
> ;;; work on most Emacs versions and Emacs derivatives.
> ;;;
> ;;; This file can be obtained from http://www.docs.uu.se/~mic/emacs.html
> 
> RD,
> Jorpheon
>

Re: How to improve the pager

[projorpheon ccf]

Any response, please?


On Tue, 5 Oct 2004 09:45:35 +0200, projorpheon ccf
<projorpheon@gmail.com> wrote:
> :-( not in the right list?
> 
> On Sun, 3 Oct 2004 16:35:06 +0200, projorpheon ccf
> 
> 
> <projorpheon@gmail.com> wrote:
> > Hello,
> > Are there anyone who is using the pager.el which is so great a fix to emacs
> > page up/down?
> >
> > But one defect is that:
> > if you scrolled down to the last page of the text and expected the
> > cursor to go to the end of the file, pager just don't respond as there
> > is not enough lines to scroll down one whole page?
> > Any idea to modify the pager.el to make it work as normal emacs behavior?
> > Thanks.
> >
> > ;;; pager.el --- windows-scroll commands
> > ;;; Version 2.0 - 97-10-06
> > ;;; Copyright (C) 1992-1997 Mikael Sj鰀in (mic@docs.uu.se)
> > ;;;
> > ;;; Author: Mikael Sj鰀in  --  mic@docs.uu.se
> > ;;;
> > ;;; This file is NOT part of GNU Emacs.
> > ;;; You may however redistribute it and/or modify it under the terms of the GNU
> > ;;; General Public License as published by the Free Software Foundation; either
> > ;;; version 2, or (at your option) any later version.
> > ;;;
> > ;;; pager.el is distributed in the hope that it will be useful,
> > ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
> > ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> > ;;; GNU General Public License for more details.
> >
> > ;;; ----------------------------------------------------------------------
> > ;;; Description:
> > ;;;
> > ;;; pager.el defines alternative commands to the Emacs builtins: scroll-down
> > ;;; and scroll-up.  It also contains commands to scroll the screen one row at
> > ;;; the time.
> > ;;;
> > ;;; The Emacs builtins for scrolling are worthless!  The commands in pager.el
> > ;;; works the way the builtins should have done from the beginning.  For
> > ;;; instance, doing a pg-up followed by a pg-down (when using pager.el) will
> > ;;; return point to the original place.
> > ;;;
> > ;;; This file has been tested under Emacs 19.34 and 20.2 but I belive it should
> > ;;; work on most Emacs versions and Emacs derivatives.
> > ;;;
> > ;;; This file can be obtained from http://www.docs.uu.se/~mic/emacs.html
> >
> > RD,
> > Jorpheon
> >
>

Re: How to improve the pager

[Kai Grossjohann]

projorpheon ccf <projorpheon@gmail.com> writes:

> Are there anyone who is using the pager.el which is so great a fix to emacs 
> page up/down?

There is the variable scroll-preserve-screen-position in Emacs 21.

And there is scroll-in-place.el by Eric Eide.

It seems that these do similar jobs as pager.el; perhaps you would
like to have a look?

Kai

Re: How to improve the pager

[projorpheon ccf]

Thank you very much, Kai Grossjohann.

>There is the variable scroll-preserve-screen-position in Emacs 21.
The scroll-preserve-screen-position only effects on the
scroll-up/scroll-down but
not the page-up/page-down which use the forward-line.

>And there is scroll-in-place.el by Eric Eide.
This one looks complicated and seems to be outdated. It might exactly
do the same thing as the scroll-preserve-screen-position. what do you think
about it?

>It seems that these do similar jobs as pager.el; perhaps you would
>like to have a look?

The pager.el looks simple but seems to require good skill on lisp programming
to modify it.

Re: How to improve the pager

[Kai Grossjohann]

projorpheon ccf <projorpheon@gmail.com> writes:

> Thank you very much, Kai Grossjohann.
>
>>There is the variable scroll-preserve-screen-position in Emacs 21.
> The scroll-preserve-screen-position only effects on the
> scroll-up/scroll-down but
> not the page-up/page-down which use the forward-line.

What are page-up/page-down?  I have keys labeled like this on the
keyboard, and Page Down does like C-v whereas Page Up does like M-v.
All four keys preserve the screen position.

>>And there is scroll-in-place.el by Eric Eide.
> This one looks complicated and seems to be outdated. It might exactly
> do the same thing as the scroll-preserve-screen-position. what do you think
> about it?

It does not do the same thing as scroll-preserve-screen-position.  It
is very old, but that does not mean it is bad.

Yes, it is complicated, because it does a lot of stuff.  Luckily, I
think you can get it to do simple things fairly easily.

Kai