current CVS fails

current CVS fails

[Robert J. Chassell]

In a Debian GNU/Linux testing distribution, updated this morning,
with an Enlightment window manager in X

Today's GNU Emacs CVS snapshot, Thu, 2007 Oct  4  09:36 UTC
GNU Emacs 23.0.50.34 (i686-pc-linux-gnu, GTK+ Version 2.10.13)
started with -Q -D

A current CVS instance of GNU Emacs still fails after invoking
desktop-read

When I then try to invoke  buffer-menu-other-window  , I see the message

   Selecting deleted buffer

and not the buffer list.

When I do not invoke desktop-read,  buffer-menu-other-window
works as it should.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: current CVS fails

[Glenn Morris]

"Robert J. Chassell" wrote:

> A current CVS instance of GNU Emacs still fails after invoking
> desktop-read
>
> When I then try to invoke  buffer-menu-other-window  , I see the message
>
>    Selecting deleted buffer
>
> and not the buffer list.
>
> When I do not invoke desktop-read,  buffer-menu-other-window
> works as it should.

I have no problem with:

./src/emacs -Q INSTALL INSTALL.CVS
M-x desktop-save
C-x C-c

./src/emacs -Q
M-x desktop-read
M-x buffer-menu-other-window

so perhaps the problem is specific to your desktop file.

Re: current CVS fails

[Robert J. Chassell]

Today's GNU Emacs CVS snapshot, Thu, 2007 Oct  4  23:03 UTC
GNU Emacs 23.0.50.36 (i686-pc-linux-gnu, GTK+ Version 2.10.13)

    I have no problem with [detailed explanation]

    [Problem being unable to do  buffer-menu-other-window after
    desktop-read in a new instance]

It fails for me after removing all my past .emacs.desktop* files.
Here are the steps:

In a shell in my home directory,

    rm .emacs.desktop*

Then I start an instance of GNU Emacs  with -Q -D and invoke

    M-x buffer-menu-other-window

which succeeds as expected.  Next, after visiting a file

    M-x desktop-save

Then I kill that instance of Emacs.

Note, in a shell

    $ ls -al .emacs.desktop*
    -rw-r--r-- 1 bob bob 937 2007-10-04 23:33 .emacs.desktop

I start a new instance of Emacs and invoke

    M-x buffer-menu-other-window

which also succeeds as expected.
Then I delete the buffer list and invoke

    M-x desktop-read

Then I again try

    M-x buffer-menu-other-window

and it fails with the message, Selecting deleted buffer.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: current CVS fails

[Davis Herring]

> Then I again try
>
>     M-x buffer-menu-other-window
>
> and it fails with the message, Selecting deleted buffer.

Can you set debug-on-error and provide a backtrace?

Davis

-- 
This product is sold by volume, not by mass.  If it appears too dense or
too sparse, it is because mass-energy conversion has occurred during
shipping.

Re: current CVS fails

[Robert J. Chassell]

Today's GNU Emacs CVS snapshot, Fri, 2007 Oct  5  10:34 UTC
GNU Emacs 23.0.50.37 (i686-pc-linux-gnu, GTK+ Version 2.10.13)
started with -Q -D

    > and it fails with the message, Selecting deleted buffer.

    Can you set debug-on-error and provide a backtrace?

Yes.  Unfortunately I have found nothing for list-buffers-noselect.

    Debugger entered--Lisp error: (error "Selecting deleted buffer")
      list-buffers-noselect(nil)
      list-buffers(nil)
      call-interactively(list-buffers)

Neither

    cvs diff -D 2007-10-01 buff-menu.el
    cvs diff -D "5 days ago" buff-menu.el

show changes.  Also CVS annotate shows none in October 2007.

In addition, 

    cvs diff -D "5 days ago" desktop.el
    cvs diff -D 2007-10-01  desktop.el

do not show changes either.

Perhaps someone else can find problems.

I am stumped.  (I also tried GDB, edebug, and --debug-init with no
success.)  My last working copy was from 2 October 2007, which is the
date of the instance with which I am sending this message.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: current CVS fails

[Glenn Morris]

"Robert J. Chassell" wrote:

> Yes.  Unfortunately I have found nothing for list-buffers-noselect.
>
>     Debugger entered--Lisp error: (error "Selecting deleted buffer")
>       list-buffers-noselect(nil)
>       list-buffers(nil)
>       call-interactively(list-buffers)
[...]
> I am stumped.  (I also tried GDB, edebug, and --debug-init with no
> success.) 

Can you edebug list-buffers-noselect, step through it, and find out
where it tries to select a deleted buffer?

Re: current CVS fails

[Robert J. Chassell]

    Can you edebug list-buffers-noselect, step through it, and find out
    where it tries to select a deleted buffer?

When I do that, I see 

	(with-current-buffer buffer
this;

    Edebug: list-buffers-noselect
    list-buffers-noselect
    Continue...
    error: "Selecting deleted buffer"
    Continue...
    error: "Cannot return from the debugger in an error"

That is as far as I can go.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc

Re: current CVS fails

[Robert J. Chassell]

Finally, the current CVS succeeds!

In a new instance I am able to invoke buffer-menu-other-window after
desktop-read

This involved new Debian testing programs, including a new kernel, and
a new CVS instance of GNU Emacs, newly configured.  I don't know what
change made the difference.

The details are:

    In a Debian GNU/Linux testing distribution, updated this morning,
    with an Enlightment window manager in X

    Today's GNU Emacs CVS snapshot, Sat, 2007 Oct  6  09:47 UTC
    GNU Emacs 23.0.50.40 (i686-pc-linux-gnu, GTK+ Version 2.10.13)
    started with -Q -D

    after doing this;

          (cd "/usr/local/src/emacs/")

          (compile
           "time autoconf && time ./configure \
             --with-x --with-type1 --with-x-toolkit=gtk \
             --with-jpeg --with-tiff --with-gif --with-png \
             --prefix=/usr/local --with-sound=yes")

          (compile
           "time make -k -C lisp autoloads && cd lisp && \
            time make recompile \
                EMACS=/usr/local/src/emacs/src/emacs && \
            cd /usr/local/src/emacs/ && \
            time make info html")

          (compile "time make")

I plan to run this program with my .emacs file as my usual instance
and see whether it continues to succeed.

-- 
    Robert J. Chassell                          GnuPG Key ID: 004B4AC8
    bob@rattlesnake.com                         bob@gnu.org
    http://www.rattlesnake.com                  http://www.teak.cc