[issue17618] base85 encoding

[Antoine Pitrou]

Antoine Pitrou added the comment:

Le mercredi 17 avril 2013 à 18:14 +0000, Serhiy Storchaka a écrit :
> I think we can provide a universal solution compatible (with some
> pre/postprocessing) with both variants. Enclose encoded data in <~ and
> ~> or not, and at which column wrap an encoded data. Padding can be
> easy implemented as preprocessing (data + (-len(data)) % 4 * b'\0').

That's ok with me. It's just more work for whoever does it :-)

> As for Git/Mercurial's base85, what other applications use this
> encoding?

I don't know, but they use it to produce binary diffs ("diff" chunks of
binary files), so any application wanting to parse Mercurial/Git diffs
would have to recognize base85 data.

(and I also like that the Mercurial/Git variant is the simpler of all
3 :-))

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