Re: Fw: Curiosity

João Victor Bonfim  [off-list ref] writes:

quoted

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).

Yeah, that sounds reasonable, Junio.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

Em sexta-feira, 17 de dezembro de 2021 às 21:24, Junio C Hamano [off-list ref] escreveu:

João Victor Bonfim JoaoVictorBonfim@protonmail.com writes:

quoted

quoted

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).