From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Rorvick <chris@rorvick.com>
Subject: Re: [PATCH v6 0/8] push: update remote tags only with force
Date: Wed, 16 Jan 2013 20:19:28 -0600
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Cc: Junio C Hamano <gitster@pobox.com>, Max Horn <max@quendi.de>,
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To: Jeff King <peff@peff.net>
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On Wed, Jan 16, 2013 at 11:43 AM, Jeff King <peff@peff.net> wrote:
> I think that is a reasonable rule that could be applied across all parts
> of the namespace hierarchy. And it could be applied by the client,
> because all you need to know is whether ref->old_sha1 is reachable from
> ref->new_sha1.

is_forwardable() did solve a UI issue.  Previously all instances where
old is not reachable by new were assumed to be addressable with a
merge.  is_forwardable() attempted to determine if the concept of
forwarding made sense given the inputs.  For example, if old is a blob
it is useless to suggest merging it.

Chris