Re: [PATCH] builtin/pack-objects.c: introduce `pack.extraCruftTips`

[Junio C Hamano <gitster@pobox.com>]

Taylor Blau <me@ttaylorr.com> writes:

> This patch introduces a new configuration, `pack.extraCruftTips` which
> allows the caller to specify a program (or set of programs) whose output
> is treated as a set of objects to treat as "kept", even if they are
> unreachable and have aged out of the retention period.

I can see why this would make the implementation simpler, simply
because no existing codepaths that determines if an object is still
live knows about such a program hence all the codepaths by default
keep considering them expungeable crufts except for a very limited
set of codepaths that will pay attention to the program.  But it
makes me wonder if it would make the life of end-users simpler if we
reserve a special ref hierarchy, say "refs/crufts/*", than having to
write a program for doing something like this.

Thanks.