Re: [PATCH 1/3] show-index: implement automatic hash detection

From: brian m. carlson <sandals@crustytoothpaste.net>
Date: Jan 23, 2026, 20:29 UTC
Message-ID: <aXPaHWV62HEfHyy_@fruit.crustytoothpaste.net>
In-Reply-To: <aXCJp_rGPetsXE8J@pks.im>

On 2026-01-21 at 08:09:11, Patrick Steinhardt wrote:

> I think if we wanted to fix properly this we should rather introduce
> index v5 with a header that encodes the hash used by it. Like that we
> wouldn't have to guess anymore. Whether the hassle is worth it might be
> a different question though.

Index v3, which will be used during interoperability, will encode the hash algorithm and can be used for single-hash implementations as well as multi-hash implementations.

There's an implementation in my `sha256-interop` branch at https://github.com/bk2204/git.git and we could simply enable it by default at some point in the future.

-- 
brian m. carlson (they/them)
Toronto, Ontario, CA