GNU bug report logs - #24039
24.5; emacs shell doesn't work with mosh

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

From: Nico Schottelius <nico.schottelius <at> ungleich.ch>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.5; emacs shell doesn't work with mosh
Date: Wed, 20 Jul 2016 17:04:24 +0200

[Message part 1 (text/plain, inline)]

Starting M-x shell and afterwards entering "mosh mymachine" results into
mosh crashing with:

mosh-server: terminalframebuffer.cc:73:
Terminal::Framebuffer::Framebuffer(int, int): Assertion `s_height > 0'
failed.

I suspect that the window height is not being exposed in a standard
terminfo way to be consumed by mosh.

Furthermore escapes from bash and zsh are displayed as

[16:58] wurzel:~% [?2004

(where wurzel is my hostname and 16:58 is the time)




In GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.20.6)
 of 2016-06-04 on juergen
Windowing system distributor `The X.Org Foundation', version 11.0.11803000
System Description:	Arch Linux

Configured using:
 `configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe
 -fstack-protector-strong' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro'

Important settings:
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Shell

Minor modes in effect:
  diff-auto-refine-mode: t
  magit-auto-revert-mode: t
  global-git-commit-mode: t
  shell-dirtrack-mode: t
  global-edit-server-edit-mode: t
  savehist-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 messages:
Are you sure you want to execute 1 mark? (y or n) y
[mu4e] Update process is already running [4 times]
Beginning of buffer [4 times]
[mu4e] Found 19 matching messages
[mu4e] Found 21 matching messages
Mark set
call-interactively: Buffer is read-only: #<buffer *mu4e-headers*>
Mark set
Are you sure you want to execute 3 marks? (y or n) y
Making completion list... [2 times]

Load-path shadows:
~/.emacs.d/lisp/haskell hides /usr/share/emacs/site-lisp/haskell-mode/haskell
~/.emacs.d/lisp/magit hides /usr/share/emacs/site-lisp/magit/magit
/usr/share/emacs/site-lisp/haskell-mode/highlight-uses-mode hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/highlight-uses-mode
/usr/share/emacs/site-lisp/haskell-mode/ghc-core hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/ghc-core
~/.emacs.d/lisp/haskell hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell
/usr/share/emacs/site-lisp/haskell-mode/haskell-menu hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-menu
/usr/share/emacs/site-lisp/haskell-mode/haskell-cabal hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-cabal
/usr/share/emacs/site-lisp/haskell-mode/haskell-interactive-mode hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-interactive-mode
/usr/share/emacs/site-lisp/haskell-mode/haskell-compile hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-compile
/usr/share/emacs/site-lisp/haskell-mode/haskell-customize hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-customize
/usr/share/emacs/site-lisp/haskell-mode/haskell-indent hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-indent
/usr/share/emacs/site-lisp/haskell-mode/ghci-script-mode hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/ghci-script-mode
/usr/share/emacs/site-lisp/haskell-mode/haskell-move-nested hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-move-nested
/usr/share/emacs/site-lisp/haskell-mode/haskell-sandbox hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-sandbox
/usr/share/emacs/site-lisp/haskell-mode/haskell-indentation hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-indentation
/usr/share/emacs/site-lisp/haskell-mode/haskell-process hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-process
/usr/share/emacs/site-lisp/haskell-mode/haskell-align-imports hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-align-imports
/usr/share/emacs/site-lisp/haskell-mode/haskell-session hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-session
/usr/share/emacs/site-lisp/haskell-mode/haskell-compat hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-compat
/usr/share/emacs/site-lisp/haskell-mode/haskell-font-lock hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-font-lock
/usr/share/emacs/site-lisp/haskell-mode/w3m-haddock hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/w3m-haddock
/usr/share/emacs/site-lisp/haskell-mode/haskell-c2hs hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-c2hs
/usr/share/emacs/site-lisp/haskell-mode/haskell-complete-module hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-complete-module
/usr/share/emacs/site-lisp/haskell-mode/haskell-decl-scan hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-decl-scan
/usr/share/emacs/site-lisp/haskell-mode/haskell-presentation-mode hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-presentation-mode
/usr/share/emacs/site-lisp/haskell-mode/haskell-modules hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-modules
/usr/share/emacs/site-lisp/haskell-mode/haskell-sort-imports hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-sort-imports
/usr/share/emacs/site-lisp/haskell-mode/haskell-collapse hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-collapse
/usr/share/emacs/site-lisp/haskell-mode/haskell-doc hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-doc
/usr/share/emacs/site-lisp/haskell-mode/haskell-checkers hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-checkers
/usr/share/emacs/site-lisp/haskell-mode/haskell-hoogle hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-hoogle
/usr/share/emacs/site-lisp/haskell-mode/haskell-debug hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-debug
/usr/share/emacs/site-lisp/haskell-mode/haskell-lexeme hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-lexeme
/usr/share/emacs/site-lisp/haskell-mode/haskell-completions hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-completions
/usr/share/emacs/site-lisp/haskell-mode/haskell-unicode-input-method hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-unicode-input-method
/usr/share/emacs/site-lisp/haskell-mode/inf-haskell hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/inf-haskell
/usr/share/emacs/site-lisp/haskell-mode/haskell-load hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-load
/usr/share/emacs/site-lisp/haskell-mode/haskell-repl hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-repl
/usr/share/emacs/site-lisp/haskell-mode/haskell-commands hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-commands
/usr/share/emacs/site-lisp/haskell-mode/haskell-navigate-imports hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-navigate-imports
/usr/share/emacs/site-lisp/haskell-mode/haskell-utils hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-utils
/usr/share/emacs/site-lisp/haskell-mode/haskell-string hides /usr/share/emacs/site-lisp/haskell-mode/build-24.5.1/haskell-string
~/.emacs.d/lisp/octave hides /usr/share/emacs/24.5/lisp/progmodes/octave
~/.emacs.d/lisp/org hides /usr/share/emacs/24.5/lisp/org/org

Features:
(shadow sort mail-extr emacsbug magit-extras linum conf-mode ffap vc-git
mule-util gnus-dired org-mu4e org org-macro org-footnote org-pcomplete
org-list org-faces org-entities org-version ob-emacs-lisp ob ob-tangle
ob-ref ob-lob ob-table ob-exp org-src ob-keys ob-comint ob-core ob-eval
org-compat org-macs org-loaddefs find-func mu4e desktop frameset
mu4e-speedbar speedbar sb-image ezimage dframe mu4e-main mu4e-context
mu4e-view cal-menu calendar cal-loaddefs thingatpt epa epg browse-url
mu4e-headers mu4e-compose mu4e-draft mu4e-actions ido rfc2368 smtpmail
sendmail mu4e-mark mu4e-message html2text mu4e-proc mu4e-utils doc-view
jka-compr image-mode mu4e-lists mu4e-vars hl-line cl mu4e-meta
magit-blame magit-stash magit-bisect magit-remote magit-commit
magit-sequence magit package epg-config magit-apply dired magit-wip
magit-log magit-diff smerge-mode diff-mode magit-core magit-autorevert
autorevert filenotify magit-process magit-popup magit-mode help-mode
magit-git crm magit-section magit-utils git-commit log-edit message idna
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231
rfc2047 rfc2045 ietf-drums mailabbrev mail-utils gmm-utils mailheader
pcvs-util add-log with-editor tramp-sh tramp tramp-compat tramp-loaddefs
trampver shell pcomplete format-spec server dash
haskell-interactive-mode haskell-presentation-mode haskell-collapse
haskell-process haskell-session url-util url-parse auth-source eieio
byte-opt bytecomp byte-compile cl-extra cconv eieio-core gnus-util
mm-util mail-prsvr password-cache url-vars json haskell-navigate-imports
haskell-compile haskell-mode easymenu haskell-cabal derived
haskell-utils haskell-font-lock haskell-indentation haskell-string
haskell-sort-imports haskell-lexeme rx haskell-align-imports
haskell-compat haskell-complete-module cl-macs gv noutline outline
flymake etags compile comint ring dabbrev ansi-color haskell-customize
haskell-mode-autoloads edit-server advice help-fns easy-mmode edmacro
kmacro cl-loaddefs cl-lib savehist time-date tooltip electric uniquify
ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd 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
dbusbind gfilenotify dynamic-setting system-font-setting
font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)

Memory information:
((conses 16 250900 35920)
 (symbols 48 35211 0)
 (miscs 40 239 620)
 (strings 32 80363 39514)
 (string-bytes 1 2484075)
 (vectors 16 30215)
 (vector-slots 8 712405 16885)
 (floats 8 208 433)
 (intervals 56 1075 160)
 (buffers 960 34)
 (heap 1024 59011 10442))

[Message part 2 (text/plain, inline)]

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[signature.asc (application/pgp-signature, inline)]

Message #8 received at 24039 <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Nico Schottelius <nico.schottelius <at> ungleich.ch>
Cc: 24039 <at> debbugs.gnu.org
Subject: Re: bug#24039: 24.5; emacs shell doesn't work with mosh
Date: Wed, 20 Jul 2016 22:10:04 +0200

Nico Schottelius <nico.schottelius <at> ungleich.ch> writes:

> Starting M-x shell and afterwards entering "mosh mymachine" results into
> mosh crashing with:
>
> mosh-server: terminalframebuffer.cc:73:
> Terminal::Framebuffer::Framebuffer(int, int): Assertion `s_height > 0'
> failed.
>
> I suspect that the window height is not being exposed in a standard
> terminfo way to be consumed by mosh.

Emacs' `shell' sets $TERM to "dumb", which isn't what mosh expects. Try
"M-x ansi-term", and call "mosh mymachine" from there. This works, at
least for me.

> Furthermore escapes from bash and zsh are displayed as
>
> [J[16:58] wurzel:~% [?2004
>
> (where wurzel is my hostname and 16:58 is the time)

Same reason. Teach your .profile or .bashrc or .zshrc not to use escape
sequences. Use something like this:

if test $TERM = "dumb"
   # set prompt w/o escape sequences
else
   # set default prompt
end

Best regards, Michael.

Message #13 received at 24039-done <at> debbugs.gnu.org (full text, mbox):

From: Michael Albinus <michael.albinus <at> gmx.de>
To: Nico Schottelius <nico.schottelius <at> ungleich.ch>
Cc: 24039-done <at> debbugs.gnu.org
Subject: Re: bug#24039: 24.5; emacs shell doesn't work with mosh
Date: Mon, 08 Aug 2016 11:05:45 +0200

> Nico Schottelius <nico.schottelius <at> ungleich.ch> writes:
>
>> Starting M-x shell and afterwards entering "mosh mymachine" results into
>> mosh crashing with:
>>
>> mosh-server: terminalframebuffer.cc:73:
>> Terminal::Framebuffer::Framebuffer(int, int): Assertion `s_height > 0'
>> failed.
>>
>> I suspect that the window height is not being exposed in a standard
>> terminfo way to be consumed by mosh.
>
> Emacs' `shell' sets $TERM to "dumb", which isn't what mosh expects. Try
> "M-x ansi-term", and call "mosh mymachine" from there. This works, at
> least for me.
>
>> Furthermore escapes from bash and zsh are displayed as
>>
>> [J[16:58] wurzel:~% [?2004
>>
>> (where wurzel is my hostname and 16:58 is the time)
>
> Same reason. Teach your .profile or .bashrc or .zshrc not to use escape
> sequences. Use something like this:
>
> if test $TERM = "dumb"
>    # set prompt w/o escape sequences
> else
>    # set default prompt
> end

Since there is no bug in Emacs, I'm closing this. Feel free to reopen if
you believe there's still something open to fix.

Best regards, Michael.

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