GNU bug report logs - #9605
24.0.90; initial point in *scratch* buffer

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Katsumi Yamaoka <yamaoka <at> jpl.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.90; initial point in *scratch* buffer
Date: Mon, 26 Sep 2011 23:28:13 +0900

When I start Emacs with the argument `-q' and type `q' the cursor
is put at the beginning of the *scratch* buffer.  But shouldn't it
be the end of the buffer?

Message #8 received at 9605 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Katsumi Yamaoka <yamaoka <at> jpl.org>
Cc: 9605 <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Wed, 28 Sep 2011 13:19:35 -0400

Katsumi Yamaoka wrote:

> When I start Emacs with the argument `-q' and type `q' the cursor
> is put at the beginning of the *scratch* buffer.  But shouldn't it
> be the end of the buffer?

Yes it should. It goes to point-min because the *GNU Emacs* window has a
quit-restore parameter that looks like:

(other (#<buffer *scratch*> 1 1 33 ...

I don't know what is supposed to update this.

Message #11 received at 9605 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Katsumi Yamaoka <yamaoka <at> jpl.org>
Cc: 9605 <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Wed, 28 Sep 2011 13:26:38 -0400

I wonder if this summarizes the issue:

emacs -Q

M-<   ; point at start of *scratch*
C-x b foo

In foo, insert and evaluate:

(with-current-buffer "*scratch*"
  (goto-char (point-max))
  (insert "foo"))

Then

M-x quit-window

In Emacs 23.3, point in *scratch* is now at point-max (after "foo").
In Emacs 24.0.90, it is at point-min.

Message #14 received at 9605 <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Glenn Morris <rgm <at> gnu.org>
Cc: Katsumi Yamaoka <yamaoka <at> jpl.org>, 9605 <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Wed, 28 Sep 2011 20:25:35 +0200

> emacs -Q
>
> M-<   ; point at start of *scratch*
> C-x b foo
>
> In foo, insert and evaluate:
>
> (with-current-buffer "*scratch*"
>   (goto-char (point-max))
>   (insert "foo"))
>
> Then
>
> M-x quit-window
>
> In Emacs 23.3, point in *scratch* is now at point-max (after "foo").
> In Emacs 24.0.90, it is at point-min.

It's not easy to find a general solution for this.  Suppose you edit the
same buffer in two windows A and B, temporarily switch to another buffer
in window B, continue editing in window A, and eventually quit window B.
In this case you want point in window B be at the position it had before
you switched to another buffer in it.

In the case at hand we could call `kill-buffer' in `exit-splash-screen'.
But can't we do the insertion before or while the buffer is displayed?

martin

Message #19 received at 9605-done <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: 9605-done <at> debbugs.gnu.org
Cc: Glenn Morris <rgm <at> gnu.org>, Katsumi Yamaoka <yamaoka <at> jpl.org>
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Thu, 29 Sep 2011 10:23:25 +0200

>> When I start Emacs with the argument `-q' and type `q' the cursor
>> is put at the beginning of the *scratch* buffer.  But shouldn't it
>> be the end of the buffer?
> 
> Yes it should. It goes to point-min because the *GNU Emacs* window has a
> quit-restore parameter that looks like:
> 
> (other (#<buffer *scratch*> 1 1 33 ...
> 
> I don't know what is supposed to update this.

Should be fixed now.  Please try again.

martin

Message #20 received at 9605-done <at> debbugs.gnu.org (full text, mbox):

From: Katsumi Yamaoka <yamaoka <at> jpl.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Glenn Morris <rgm <at> gnu.org>, 9605-done <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Thu, 29 Sep 2011 18:02:47 +0900

martin rudalics wrote:
> Should be fixed now.  Please try again.

Thanks!  Building Emacs on cygwin from scratch takes hours, so I
verified it in this way: load patched startup.elc and eval the form:
(progn (with-current-buffer "*scratch*" (erase-buffer)) (command-line-1 nil))

Message #21 received at 9605-done <at> debbugs.gnu.org (full text, mbox):

From: martin rudalics <rudalics <at> gmx.at>
To: Katsumi Yamaoka <yamaoka <at> jpl.org>
Cc: Glenn Morris <rgm <at> gnu.org>, 9605-done <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Fri, 30 Sep 2011 15:28:13 +0200

> Thanks!  Building Emacs on cygwin from scratch takes hours, so I
> verified it in this way: load patched startup.elc and eval the form:
> (progn (with-current-buffer "*scratch*" (erase-buffer)) (command-line-1 nil))

Unfortunately the fix introduced bug#9636 so I had to change this again.
Please try once more.

Sorry for the inconvenience, martin

Message #22 received at 9605-done <at> debbugs.gnu.org (full text, mbox):

From: Katsumi Yamaoka <yamaoka <at> jpl.org>
To: martin rudalics <rudalics <at> gmx.at>
Cc: Glenn Morris <rgm <at> gnu.org>, 9605-done <at> debbugs.gnu.org
Subject: Re: bug#9605: 24.0.90; initial point in *scratch* buffer
Date: Fri, 30 Sep 2011 22:54:34 +0900

martin rudalics <rudalics <at> gmx.at> wrote:
> Unfortunately the fix introduced bug#9636 so I had to change this again.
> Please try once more.

Works fine no matter what scroll-conservatively is.  Thanks.

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