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From: Junio C Hamano <gitster@pobox.com>
To: "João Victor Bonfim" <JoaoVictorBonfim@protonmail.com>
Cc: Martin Fick <mfick@codeaurora.org>,
	"brian m. carlson" <sandals@crustytoothpaste.net>,
	git@vger.kernel.org
Subject: Re: Fw: Curiosity
Date: Fri, 17 Dec 2021 16:24:33 -0800	[thread overview]
Message-ID: <xmqq1r2a220u.fsf@gitster.g> (raw)
In-Reply-To: <1X3gQ48NK5aBDHcpYMlxESRjqubcCBKJUQu2K0dBOnTyvsXCXXoGDBg2Ff4KarK6WsZnzN3HgqHGOlCKKdF-wtZQ5tHsoAcfit2CTXMWqh4=@protonmail.com> ("João Victor Bonfim"'s message of "Sat, 18 Dec 2021 00:15:59 +0000")

João Victor Bonfim  <JoaoVictorBonfim@protonmail.com> writes:

>> I suspect that for most algorithms and their implementations, this would
>>
>> not result in repeatable "recompressed" results. Thus the checked-out
>>
>> files might be different every time you checked them out. :(
>
> How or why?
>
> Sincere question.

Two immediate things that come to my mind are lossy compression
algorithms (jpeg pictures?) and compressors that do not necessarily
produce bit-for-bit identical results (e.g. gzip by default embeds
timestamp unless explicitly told not to from a command line option).

  reply	other threads:[~2021-12-18  0:24 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <Wlh_w2gSCDQ2ieJnIY7TStWrzxbwP98SNRIFMTYpva7SRFipqk63HEYFVF7wFn1oSHOkQNsjWGOa5L49vyRlvSLbuZqpmvOaDOHmFkdt2zw=@protonmail.com>
2021-12-15  3:52 ` Fw: Curiosity João Victor Bonfim
2021-12-15 18:07   ` Junio C Hamano
2021-12-15 23:45     ` João Victor Bonfim
2021-12-16  2:19     ` brian m. carlson
2021-12-16 21:20       ` João Victor Bonfim
2021-12-16 21:33         ` Martin Fick
2021-12-16 21:42           ` Junio C Hamano
2021-12-18  0:17             ` João Victor Bonfim
2021-12-18  0:15           ` João Victor Bonfim
2021-12-18  0:24             ` Junio C Hamano [this message]
2021-12-18  0:50               ` João Victor Bonfim
2021-12-18  1:06             ` Martin Fick
2021-12-18  1:34             ` brian m. carlson
2021-12-18  1:40               ` João Victor Bonfim

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