From: Eric S. Raymond <esr@thyrsus.com>
Date: Thu, 23 May 2019 20:53:13 GMT
Subject: Re: RFC: Separate commit identification from Merkle hashing
Message-ID: <20190523205313.GB69096@thyrsus.com>
In-Reply-To: <20190523200929.GA70860@google.com>

Jonathan Nieder <jrnieder@gmail.com>:
> In other words, usually the benefit of supporting multiple hash
> functions as a reader is that you want the strength of the strongest
> of those hash functions and you need a migration path to get there.
> If you don't have a way to eventually drop support for the weaker
> hashes, then what benefit do you get from supporting multiple hash
> functions?

Not losing the capability to verify old parts of histories up to the
strength of the old hash algorithm.  Not perfect, but better than nothing.
-- 
		<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>