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Re: [Help-tar] tar patch to selectively divert named compressors to alte


From: ERSEK Laszlo
Subject: Re: [Help-tar] tar patch to selectively divert named compressors to alternatives
Date: Sat, 10 Oct 2009 15:21:23 +0200 (CEST)

Hi,

I think these options have been named:


1. Don't change tar at all. Somebody creates a (sufficiently) command line compatible, mult-threaded bzip2 alternative out of lbzip2 (for example). Through the alternatives system, tar will access whichever implementation is configured under the name "bzip2".

2. Add a ./configure --with-bzip2-filter compile-time switch to tar. The selected utility only needs to support a filter (--use) interface. Debian would add a new symlink, /usr/bin/bzip2-filter, which would lead, through the alternatives system, to /bin/bzip2 or for example to /usr/bin/lbzip2.

2a. Modify upstream tar.
2b. Maintain this patch as part of the Debian packaging of tar.

3. Add runtime bzip2-filter selection to tar (TAR_OPTIONS).

3a. Modify upstream tar.
3b. Maintain this patch as part of the Debian packaging of tar.


What I believe to be the preferences:

AnĂ­bal: ?

Bdale: 2a, 3a

Karl: 1, 2b/3b

lacos: 3a, 2a, 3b, 2b, 1

Paul: 3a, 3b

Sergey: 1, 2b/3b, 2a, 3a


Even if lbzip2 was command line compatible with bzip2, imagining a user issuing "bzip2" but actually executing lbzip2 scares me somehow.

Bdale, I would be happy to help maintaining a tar patch of your choice in the Debian packaging. (Preferably the one I wrote, as I already understand that.)


Thanks,
lacos

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