GNU bug report logs - #79414
the ratio output by "gzip -l" is less than 0

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Message #13 received at 79414-done <at> debbugs.gnu.org (full text, mbox):

From: "Adler, Mark" <madler <at> alumni.caltech.edu>
To: "79414-done <at> debbugs.gnu.org" <79414-done <at> debbugs.gnu.org>
Cc: Paul Eggert <eggert <at> CS.UCLA.EDU>, shi xuantong <sxt1001 <at> outlook.com>
Subject: Re: bug#79414: the ratio output by "gzip -l" is less than 0
Date: Tue, 9 Sep 2025 18:12:35 +0000

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pigz reports "-inf%”. Alas, a lower-case “i”.

On Sep 9, 2025, at 11:05 AM, Paul Eggert <eggert <at> CS.UCLA.EDU> wrote:

A negative compression ratio is correct when gzip's compressed output is larger than its input.

Arguably gzip should output "-Inf%" when the input is empty and the compressed output is not. But that's a mere nicety.

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