Subject: bug#79414: the ratio output by "gzip -l" is less than 0

From: "Adler, Mark" <[email-masked]>
Date: Tue, 9 Sep 2025 18:12:35 +0000

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

On Sep 9, 2025, at 11:05 AM, Paul Eggert <[email-masked]> 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.