GNU bug report logs - #14652
24.3; ZIP files corrupted when saved via tramp

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: JuanLeon Lahoz <juanleon.lahoz <at> gmail.com>
Subject: bug#14652: closed (Re: bug#14652: 24.3; ZIP files corrupted when
 saved via tramp)
Date: Thu, 20 Jun 2013 12:52:03 +0000

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Your bug report

#14652: 24.3; ZIP files corrupted when saved via tramp

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 14652 <at> debbugs.gnu.org.

-- 
14652: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14652
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Michael Albinus <michael.albinus <at> gmx.de>
To: JuanLeon Lahoz <juanleon.lahoz <at> gmail.com>
Cc: 14652-done <at> debbugs.gnu.org
Subject: Re: bug#14652: 24.3; ZIP files corrupted when saved via tramp
Date: Thu, 20 Jun 2013 14:51:36 +0200

JuanLeon Lahoz <juanleon.lahoz <at> gmail.com> writes:

> Patch is working fine for me :-)

Thanks for testing. I'm closing the bug.

> Thanks!
> juanleon

Best regards, Michael.

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From: JuanLeon Lahoz <juanleon.lahoz <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.3; ZIP files corrupted when saved via tramp
Date: Tue, 18 Jun 2013 13:49:51 +0200

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Dear Emacs maintainers,

I start emacs with emacs -Q.  Then I open two remote files (foo.tgz and
foo.zip).  I modify a file within both of them.  I save them.  foo.tgz gets
upated correctly and foo.zip gets corrupted (same happens with jar files,
btw,
since they are zipped).

[ For reproducing the issue, you don't need the foo.tgz file, I just
mention that
to point that other compressed formats work fine for me ].

The remote files are in a system available via SSH, so that is what tramp
uses.

The funny thing is that when I modify the zip file locally, it works
fine and emacs does not remind me I need to save the zip file (emacs
reminds me to do it with the tgz file), but remotely emacs reminds me to
save the zip file.  When I do, it gets corrupted.

I was not sure if the problem lies within tramp or in the emacs code that
deals
with zip files, so I filed a bug report to tramp.  Here is their answer:

   I would say it is due to arc-mode.el. I've checked the code shortly; it
uses
   `call-process' internally, which is not prepared for remote files.
Replacing
   all such calls by `process-file' was not reasonable, at least handling of
   temporary files must be improved as well.

   I recommend to file a bug report towards Emacs, by "M-x
report-emacs-bug".

(I would appreciate very much a way to get a patch for fixing this, if/when
available)

Configured using:
 `configure '--with-x-toolkit=gtk3''

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Minor modes in effect:
  tooltip-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

Load-path shadows:
None found.

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