bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

[Matz, Daniel A. (JSC-EG511)]

Hello,

Starting with emacs -Q, execute the following:

--8<---------------cut here---------------start------------->8---
(require 'tramp)
(let ((scpx-method (cdr (assoc "scpx" tramp-methods))))
  (add-to-list 'scpx-method '(tramp-remote-shell "/bin/bash"))
  (add-to-list 'tramp-methods (cons "scpx" scpx-method)))
--8<---------------cut here---------------end--------------->8---

Then use the "scpx" connection type to find a file on a remote host.  Then, use `shell-command' to run "echo $_".  I get an output of "/bin/bash".  Then, run the same command with `compile'.  I get an output of "/bin/sh".  I was expecting to again get "/bin/bash".

Thank you!

Daniel



In GNU Emacs 25.3.1 (x86_64-apple-darwin15.6.0, NS appkit-1404.47 Version 10.11.6 (Build 15G1611))
of 2017-09-13 built on JSSLA17030925
Windowing system distributor 'Apple', version 10.3.1404
Configured using:
'configure --disable-dependency-tracking --disable-silent-rules
--enable-locallisppath=/usr/local/share/emacs/site-lisp
--infodir=/usr/local/Cellar/emacs/25.3/share/info/emacs
--prefix=/usr/local/Cellar/emacs/25.3 --without-x --with-xml2
--without-dbus --without-gnutls --with-imagemagick --with-ns
--disable-ns-self-contained'

Configured features:
JPEG IMAGEMAGICK NOTIFY ACL LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Dired by name

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-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
  buffer-read-only: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
Tramp: Found remote shell prompt on ‘blade11-fsl’
Tramp: Opening connection for blade11-fsl using scpx...done
ls does not support --dired; see ‘dired-use-ls-dired’ for more details.
/bin/bash
Tramp: Opening connection for blade11-fsl using scpx...
Tramp: Sending command ‘exec ssh -q   -o ControlMaster=auto -o ControlPath='tramp.%C' -o ControlPersist=no -e none -t -t blade11-fsl /bin/sh’
Tramp: Waiting for prompts from remote shell...done
Tramp: Found remote shell prompt on ‘blade11-fsl’
Tramp: Opening connection for blade11-fsl using scpx...done
Compilation finished

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rfc822 mml mml-sec epg
epg-config mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mail-utils
compile dired tramp-cache tramp-sh tramp tramp-compat auth-source cl-seq
eieio byte-opt bytecomp byte-compile cl-extra cconv eieio-core cl-macs
gv gnus-util mm-util help-fns help-mode easymenu cl-loaddefs pcase
cl-lib mail-prsvr password-cache tramp-loaddefs trampver shell pcomplete
comint ansi-color ring format-spec advice time-date mule-util tooltip
eldoc electric uniquify ediff-hook vc-hooks lisp-float-type mwheel
ns-win ucs-normalize term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded 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 kqueue cocoa ns multi-tty
make-network-process emacs)

Memory information:
((conses 16 219866 11318)
(symbols 48 22367 0)
(miscs 40 65 321)
(strings 32 24665 6831)
(string-bytes 1 805327)
(vectors 16 37025)
(vector-slots 8 697142 5701)
(floats 8 228 204)
(intervals 56 503 0)
(buffers 976 21))

bug#29723: Acknowledgement (25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh")

[Matz, Daniel A. (JSC-EG511)]

Hi,

I never received any reply to this bug report.  Did this one fall through the cracks?

Thank you!

Daniel

> On Dec 15, 2017, at 1:57 PM, GNU bug Tracking System <help-debbugs@gnu.org> wrote:
> 
> Thank you for filing a new bug report with debbugs.gnu.org.
> 
> This is an automatically generated reply to let you know your message
> has been received.
> 
> Your message is being forwarded to the package maintainers and other
> interested parties for their attention; they will reply in due course.
> 
> Your message has been sent to the package maintainer(s):
> bug-gnu-emacs@gnu.org
> 
> If you wish to submit further information on this problem, please
> send it to 29723@debbugs.gnu.org.
> 
> Please do not send mail to help-debbugs@gnu.org unless you wish
> to report a problem with the Bug-tracking system.
> 
> -- 
> 29723: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=29723
> GNU Bug Tracking System
> Contact help-debbugs@gnu.org with problems

bug#29723: Acknowledgement (25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh")

[Eli Zaretskii]

> From: "Matz, Daniel A. (JSC-EG511)" <daniel.a.matz@nasa.gov>
> Date: Wed, 21 Feb 2018 22:13:11 +0000
> 
> I never received any reply to this bug report.  Did this one fall through the cracks?

Sorry about that.  Michael, can you please take a look?

bug#29723: Acknowledgement (25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh")

[Michael Albinus]

Eli Zaretskii <eliz@gnu.org> writes:

>> I never received any reply to this bug report.  Did this one fall
>> through the cracks?
>
> Sorry about that.  Michael, can you please take a look?

Will do.

Best regards, Michael.

bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

[Michael Albinus]

"Matz, Daniel A. (JSC-EG511)" <daniel.a.matz@nasa.gov> writes:

> Hello,

Hi Daniel,

> Starting with emacs -Q, execute the following:
>
> (require 'tramp)
> (let ((scpx-method (cdr (assoc "scpx" tramp-methods))))
>   (add-to-list 'scpx-method '(tramp-remote-shell "/bin/bash"))
>   (add-to-list 'tramp-methods (cons "scpx" scpx-method)))
>
> Then use the "scpx" connection type to find a file on a remote host.
> Then, use `shell-command' to run "echo $_".  I get an output of
> "/bin/bash".  Then, run the same command with `compile'.  I get an
> output of "/bin/sh".  I was expecting to again get "/bin/bash".

This is the same problem as bug#24338, I will mark your report as
duplicate.

In fact, "/bin/sh" is hardcoded for remote compilation in function
`compilation-start'. This shall be changed, using connection-local
variables, see (info "(elisp) Connection Local Variables")

It is on my todo list, but less prioritized. I would be happy if
somebody else takes the ball, and implements this in `compilation-start'.

> Thank you!
>
> Daniel

Best regards, Michael.

bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

[Michael Albinus]

Robert Pluim <rpluim@gmail.com> writes:

Hi Robert,

>> It is on my todo list, but less prioritized. I would be happy if
>> somebody else takes the ball, and implements this in `compilation-start'.
>
> You mean this is going to be changed to enable the use of connection
> local variables, or it's already possible to do so?

The former. See for example `shell', where this has been done. Due to
this, you could set `explicit-shell-file-name' for different remote
connections.

However, meanwhile I believe we shouldn't implement it in every single
package which might profit from this. A better approach might be to call
it in `hack-local-variables'. Connection local variables would be
enabled then by every `run-mode-hooks' call, i.e., when a buffer
determines its major mode. Like directory local variables.

> Robert

Best regards, Michael.

bug#24338: bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

[Michael Albinus]

Michael Albinus <michael.albinus@gmx.de> writes:

Hi Daniel,

>> Starting with emacs -Q, execute the following:
>>
>> (require 'tramp)
>> (let ((scpx-method (cdr (assoc "scpx" tramp-methods))))
>>   (add-to-list 'scpx-method '(tramp-remote-shell "/bin/bash"))
>>   (add-to-list 'tramp-methods (cons "scpx" scpx-method)))
>>
>> Then use the "scpx" connection type to find a file on a remote host.
>> Then, use `shell-command' to run "echo $_".  I get an output of
>> "/bin/bash".  Then, run the same command with `compile'.  I get an
>> output of "/bin/sh".  I was expecting to again get "/bin/bash".
>
> This is the same problem as bug#24338, I will mark your report as
> duplicate.
>
> In fact, "/bin/sh" is hardcoded for remote compilation in function
> `compilation-start'. This shall be changed, using connection-local
> variables, see (info "(elisp) Connection Local Variables")
>
> It is on my todo list, but less prioritized. I would be happy if
> somebody else takes the ball, and implements this in `compilation-start'.

Finally, I've adapted connection-local variables accordingly, pushed to
the master branch. See the discussion in (info "(emacs) Connection Variables")

>> Thank you!
>>
>> Daniel

Best regards, Michael.

bug#24338: bug#29723: 25.3; `compile' doesn't honor `tramp-methods', always uses "/bin/sh"

[Michael Albinus]

Michael Albinus <michael.albinus@gmx.de> writes:

> Finally, I've adapted connection-local variables accordingly, pushed to
> the master branch. See the discussion in (info "(emacs) Connection Variables")

No news are good news. I'm closing the bugs. Feel free to ask if there's
something not clear with the solution.

Best regards, Michael.