GNU bug report logs - #4857
23.1; tar-mode "C" tar-copy not working

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Message #5 received at submit <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Kevin Ryde <user42 <at> zip.com.au>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.1; tar-mode "C" tar-copy not working
Date: Tue, 03 Nov 2009 07:30:19 +1100

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

Visiting the file foo.tar below

    emacs -Q foo.tar

and trying to `tar-copy' the first entry to a file "zzz"

    C
    zzz

gets an error

    tar-copy: Args out of range: 513, 723

On a tar with a lot of files, the first of which is small, the command
succeeds, but the contents written are the text of the directory
listing, not the tar file.

I see tar-copy does a `widen' apparently to get at the data.  Does it
have to look in tar-data-buffer these days?

[foo.tar (application/x-tar, attachment)]

[Message part 3 (text/plain, inline)]

In GNU Emacs 23.1.1 (i486-pc-linux-gnu, GTK+ Version 2.16.5)
 of 2009-09-14 on raven, modified by Debian
configured using `configure  '--build=i486-linux-gnu' '--host=i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs23:/etc/emacs:/usr/local/share/emacs/23.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.1/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/23.1/leim' '--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_AU
  value of $XMODIFIERS: nil
  locale-coding-system: iso-latin-1-unix
  default-enable-multibyte-characters: t

Message #10 received at 4857 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Kevin Ryde <user42 <at> zip.com.au>
Cc: 4857 <at> debbugs.gnu.org
Subject: Re: bug#4857: 23.1; tar-mode "C" tar-copy not working
Date: Mon, 02 Nov 2009 17:20:08 -0500

> I see tar-copy does a `widen' apparently to get at the data.  Does it
> have to look in tar-data-buffer these days?

Yes,


        Stefan

Message #15 received at 4857-done <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: Kevin Ryde <user42 <at> zip.com.au>
Cc: 4857-done <at> debbugs.gnu.org
Subject: Re: 23.1; tar-mode "C" tar-copy not working
Date: Sat, 07 Nov 2009 13:20:43 -0500

>     emacs -Q foo.tar
>     C
>     zzz
>     tar-copy: Args out of range: 513, 723
>
> On a tar with a lot of files, the first of which is small, the command
> succeeds, but the contents written are the text of the directory
> listing, not the tar file.

I've checked in a fix.  Thanks.

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