[debbugs-tracker] bug#22452: closed (24.4; Tramp remote shell fails on remote+sudo+homedir destination)

[GNU bug Tracking System]

Your message dated Thu, 28 Jan 2016 13:45:17 +0100
with message-id <address@hidden>
and subject line Re: bug#22452: 24.4; Tramp remote shell fails on 
remote+sudo+homedir destination
has caused the debbugs.gnu.org bug report #22452,
regarding 24.4; Tramp remote shell fails on remote+sudo+homedir destination
to be marked as done.

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22452: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=22452
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--- Begin Message --- Subject: 24.4; Tramp remote shell fails on remote+sudo+homedir destination Date: Sat, 23 Jan 2016 21:00:10 -0500

Tramp fails to start a remote shell when the remote path is exactly of

the form '/ssh:host|sudo:address@hidden:'. It fails with a message in the

minibuffer, "Selecting deleted buffer".

To reproduce the error:

* Start emacs with -Q

* In any buffer (*scratch* is fine):

  M-Esc (setq default-directory "/ssh:example.com|sudo:address@hidden:")

* In that same buffer, Esc-x shell

This fails (with "Selecting deleted buffer") for me in the version of

emacs listed in the bug report and more recent versions, which I

compiled, eg: GNU Emacs 24.5.50.1 (x86_64-apple-darwin14.5.0, NS

apple-appkit-1348.17) of 2015-12-16 on twist.myriadicity.net.

I can't get a backtrace for it, even if I set debug-on-error and

signal-on-error.

In GNU Emacs 24.4.1 (x86_64-apple-darwin13.4.0, NS apple-appkit-1265.21)

 of 2014-10-20 on builder10-9.porkrind.org

Windowing system distributor `Apple', version 10.3.1348

Configured using:

 `configure --with-ns'

Important settings:

  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:

  shell-dirtrack-mode: t

  tooltip-mode: t

  electric-indent-mode: t

  mouse-wheel-mode: t

  tool-bar-mode: t

  menu-bar-mode: t

  file-name-shadow-mode: t

  global-font-lock-mode: t

  font-lock-mode: t

  blink-cursor-mode: t

  auto-composition-mode: t

  auto-encryption-mode: t

  auto-compression-mode: t

  line-number-mode: t

  transient-mark-mode: t

Recent input:

M-: C-y <return> M-x s h e l l <return> M-x e m a c 

s - r C-a C-k r e p o r t - e m <tab> <return>

Recent messages:

Tramp: Opening connection for address@hidden using sudo...

Tramp: Sending command `exec ssh   -o ControlPath=/var/folders/5s/5565scz120l9bsp9y97gn3hr0000gn/T/address@hidden:%p -o ControlMaster=auto -o ControlPersist=no -e none myr'

Tramp: Waiting for prompts from remote shell...done

Tramp: Found remote shell prompt on `myr'

Tramp: Sending command `exec env SHELL=/bin/sh sudo -u root -s -H -p Password:'

Tramp: Waiting for prompts from remote shell...done

Tramp: Found remote shell prompt on `myr'

Tramp: Opening connection for address@hidden using sudo...done

Tramp: Waiting for prompts from remote shell...failed

Tramp: Opening connection for address@hidden using sudo...failed

byte-code: Selecting deleted buffer

Load-path shadows:

None found.

Features:

(shadow sort mail-extr emacsbug message rfc822 mml easymenu mml-sec

mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils

mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils tramp-cmds

tramp-cache tramp-sh tramp tramp-compat auth-source eieio byte-opt

bytecomp byte-compile cconv eieio-core gnus-util mm-util mail-prsvr

password-cache tramp-loaddefs trampver shell pcomplete comint ansi-color

ring format-spec advice help-fns time-date tooltip electric uniquify

ediff-hook vc-hooks lisp-float-type mwheel ns-win tool-bar dnd fontset

image regexp-opt fringe tabulated-list newcomment lisp-mode prog-mode

register page menu-bar rfn-eshadow timer select scroll-bar mouse

jit-lock font-lock syntax facemenu font-core frame cham georgian

utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean

japanese hebrew greek romanian slovak czech european ethiopic indian

cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev

minibuffer nadvice loaddefs button faces cus-face macroexp files

text-properties overlay sha1 md5 base64 format env code-pages mule

custom widget hashtable-print-readable backquote make-network-process

cocoa ns multi-tty emacs)

Memory information:

((conses 16 93141 15547)

 (symbols 48 19906 0)

 (miscs 40 41 132)

 (strings 32 19106 30804)

 (string-bytes 1 574404)

 (vectors 16 12830)

 (vector-slots 8 421987 6836)

 (floats 8 115 514)

 (intervals 56 180 0)

 (buffers 960 13))

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#22452: 24.4; Tramp remote shell fails on remote+sudo+homedir destination
>
>
>
>
> Date: 
>
> Thu, 28 Jan 2016 13:45:17 +0100
>
>
>
>
> User-agent: 
>
> Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)
>
>
>
>
> Version: 25.1
>
> Ken Manheimer <address@hidden> writes:
>
> > I'm glad you're investigating, Michael!
> >
> > Upshot is that I believe that there still is a bug worth unravelling
> > [especially since it involves an aggravating and elusive "Selecting
> > deleted buffer" event], in the way that shells start when
> > default-directory is set to remote+sudo+homedir format, but I can
> > avoid that by using `cd'.
>
> Finally, I could fix it. While establishing the connection, a
> `file-remote-p` call was performed which included `expand-file-name' of
> `default-directory'. Since the connection wasn't stablished yet, the
> error occured.
>
> There won't be a new Emacs 24.x release, so I have fixed it in Emacs
> 25.1 (commit deae005667516b7e1296527f7e34c54604a81882). You could check
> it there. In case of problems, pls tell.
>
> > Ken
>
> Best regards, Michael.
>
>
> --- End Message ---