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bug#62329: closed (30.0.50; Error in TRAMP due to variable aliasing)


From: GNU bug Tracking System
Subject: bug#62329: closed (30.0.50; Error in TRAMP due to variable aliasing)
Date: Tue, 21 Mar 2023 20:27:01 +0000

Your message dated Tue, 21 Mar 2023 21:26:31 +0100
with message-id <87mt45q2a0.fsf@gmx.de>
and subject line Re: bug#62329: 30.0.50; Error in TRAMP due to variable aliasing
has caused the debbugs.gnu.org bug report #62329,
regarding 30.0.50; Error in TRAMP due to variable aliasing
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs@gnu.org.)


-- 
62329: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=62329
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems
--- Begin Message --- Subject: 30.0.50; Error in TRAMP due to variable aliasing Date: Tue, 21 Mar 2023 14:00:23 +0200
The recent rename of tramp-use-ssh-controlmaster-options in commit
1c39347d585 seems to cause some problems, namely Emacs now fails with an
error when trying to load tramp-sh (which happens automatically in some
TRAMP flows) if tramp is already loaded and compilation-mode-hook ran.
To reproduce:

1. emacs -Q
2. (require 'tramp)
   This further requires tramp-integration which adds a function
   called tramp-compile-disable-ssh-controlmaster-options to
   compilation-mode-hook
3. Do something that runs compilation-mode-hook, e.g. M-x compile with
   some dummy compilation command like "true".
4. Try to load tramp-sh with e.g. (require 'tramp-sh)
   Emacs fails with an error saying:
   "Don’t know how to make a buffer-local variable an alias:
   tramp-use-connection-share".
   AFAIU This happens because at this point tramp-use-connection-share is
   already a localized symbol and tramp-sh tries to call defvaralias on it.

Thanks,
Eshel


In GNU Emacs 30.0.50 (build 25, x86_64-apple-darwin22.3.0, NS
 appkit-2299.40 Version 13.2.1 (Build 22D68)) of 2023-03-21 built on
 esmac.local
Repository revision: 42fba8f36b19536964d6deb6a34f3fd1c02b43dd
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2299
System Description:  macOS 13.2.1

Configured using:
 'configure --with-native-compilation --with-json --with-tree-sitter'

Configured features:
ACL DBUS GIF GLIB GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY KQUEUE NS PDUMPER PNG RSVG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB

Important settings:
  value of $LC_CTYPE: UTF-8
  locale-coding-system: utf-8-unix

Major mode: Debugger

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-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
  buffer-read-only: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec epa derived epg rfc6068 epg-config
gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils help-fns radix-tree cl-print debug backtrace
find-func compile text-property-search tramp tramp-loaddefs trampver
tramp-integration files-x tramp-compat shell pcomplete comint ansi-osc
ansi-color ring parse-time iso8601 time-date ls-lisp format-spec
auth-source eieio eieio-core cl-loaddefs comp comp-cstr warnings icons
rx cl-seq cl-macs cl-extra help-mode cl-lib password-cache json subr-x
map byte-opt gv bytecomp byte-compile rmc iso-transl tooltip cconv eldoc
paren electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode
mwheel term/ns-win ns-win ucs-normalize mule-util term/common-win
tool-bar dnd fontset image regexp-opt fringe tabulated-list replace
newcomment text-mode lisp-mode prog-mode register page tab-bar menu-bar
rfn-eshadow isearch easymenu timer select scroll-bar mouse jit-lock
font-lock syntax font-core term/tty-colors frame minibuffer nadvice seq
simple cl-generic indonesian philippine 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 composite emoji-zwj charscript charprop case-table
epa-hook jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button
loaddefs theme-loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads dbusbind
kqueue cocoa ns lcms2 multi-tty make-network-process native-compile
emacs)

Memory information:
((conses 16 120777 8827)
 (symbols 48 9991 0)
 (strings 32 30989 2026)
 (string-bytes 1 1006709)
 (vectors 16 22054)
 (vector-slots 8 390621 12591)
 (floats 8 47 25)
 (intervals 56 395 0)
 (buffers 984 13))



--- End Message ---
--- Begin Message --- Subject: Re: bug#62329: 30.0.50; Error in TRAMP due to variable aliasing Date: Tue, 21 Mar 2023 21:26:31 +0100 User-agent: Gnus/5.13 (Gnus v5.13)
Version: 30.1

Eshel Yaron <me@eshelyaron.com> writes:

Hi Eshel,

>> In my local environment, I have inverted the definition of the variable
>> alias. This seems to solve the bug.
>>
>> Could you pls try this patch?
>
> Yes, with this patch I don't get that error anymore, seems to work fine :)

Thanks for the feedback, I've pushed the patch to master. Closing the
bug.

Best regards, Michael.


--- End Message ---

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