GNU bug report logs - #2353
23.0.90; jka-compr: LZMA support

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Glenn Morris <rgm <at> gnu.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#2353: closed (23.0.90; jka-compr: LZMA support)
Date: Thu, 09 Feb 2012 21:25:02 +0000

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Your message dated Thu, 09 Feb 2012 16:23:22 -0500
with message-id <kkfwejr99x.fsf <at> fencepost.gnu.org>
and subject line Re: bug#2353: 23.0.90; jka-compr: LZMA support
has caused the debbugs.gnu.org bug report #2353,
regarding 23.0.90; jka-compr: LZMA support
to be marked as done.

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


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From: trentbuck <at> gmail.com
To: emacs-pretest-bug <at> gnu.org
Cc: rfrancoise <at> debian.org
Subject: 23.0.90; jka-compr: LZMA support
Date: Mon, 16 Feb 2009 22:36:49 -0800 (PST)

From lzma(1):

    LZMA (Lempel-Ziv-Markov chain-Algorithm) is an improved version of
    famous LZ77 compression algorithm. It was improved in way of
    maximum increasing of compression ratio, keeping high
    decompression speed and low memory requirements for decompressing.

This seems to work such that foo.tar.lzma can be opened happily by
Emacs.  I suggest adding it to the default list in jka-compr.el.

    (progn
      (add-to-list 'jka-compr-compression-info-list
        ["\\.lzma\\(~\\|\\.~[0-9]+~\\)?\\'" nil "lzma"  nil nil "unlzma" nil nil t ""])
      (jka-compr-set 'jka-compr-compression-info-list jka-compr-compression-info-list))

PS: I'm not sure whether to use nil or "" for this case: there is no
reliable magic for lzma files.  From my /usr/share/file/magic:

    # URL:  http://www.7-zip.org/sdk.html
    # From: Robert Millan <rmh <at> aybabtu.com> and Reuben Thomas <rrt <at> sc3d.org>
    # Commented out because apparently not reliable (according to Debian
    # bug #364260)
    #0      string          ]\000\000\200\000       LZMA compressed data


In GNU Emacs 23.0.90.1 (i486-pc-linux-gnu, GTK+ Version 2.12.11)
 of 2009-02-07 on elegiac, modified by Debian
 (emacs-snapshot package, version 1:20090207-1)
configured using `configure  '--build' 'i486-linux-gnu' '--host' 'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/23.0.90/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/23.0.90/site-lisp:/usr/share/emacs/site-lisp' '--with-x=yes' '--with-x-toolkit=gtk' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'LDFLAGS=-g -Wl,--as-needed' 'CPPFLAGS=''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: C
  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.utf8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  eldoc-mode: t
  paredit-mode: t
  shell-dirtrack-mode: t
  rcirc-track-minor-mode: t
  savehist-mode: t
  icomplete-mode: t
  partial-completion-mode: t
  show-paren-mode: t
  delete-selection-mode: t
  tooltip-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC x i r c C-j ESC x g n u s RET q y C-c C-@ C-c C-l 
ESC o ESC a C-c C-@ C-c C-@ C-c C-@ C-c C-@ C-c C-@ 
C-c C-@ C-x C-f ~ / V C S / C-j C-h C-s ESC O B ESC 
O B ESC > C-x C-f ~ / . e m a c s RET ESC O A ESC O 
A ESC [ 1 ~ ESC O A C-@ ESC O B ESC O B ESC O B ESC 
O B ESC w ESC x r e p o r t SPC e m a c s RET

Recent messages:
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(No changes need to be saved)
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[Message part 3 (message/rfc822, inline)]

From: Glenn Morris <rgm <at> gnu.org>
To: 2353-done <at> debbugs.gnu.org
Subject: Re: bug#2353: 23.0.90; jka-compr: LZMA support
Date: Thu, 09 Feb 2012 16:23:22 -0500

Version: 24.1

I noticed that jka-compr-compression-info-list now has entries
for lzma (since end Jan) and xz.

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