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From: Junio C Hamano <gitster@pobox.com>
Subject: Re: ephemeral-branches instead of detached-head?
Date: Tue, 13 Aug 2013 18:44:08 -0700
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Cc: Duy Nguyen <pclouds@gmail.com>, David Jeske <davidj@gmail.com>,
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To: Sitaram Chamarty <sitaramc@gmail.com>
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In-Reply-To: <520AC9A8.4030104@gmail.com> (Sitaram Chamarty's message of "Wed,
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Sitaram Chamarty <sitaramc@gmail.com> writes:

>     # all reflog entries that are not on a branch, tag, or remote
>     d1 = !gitk --date-order $(git log -g --pretty=%H) --not --branches --tags --remotes
>     # all dangling commits not on a branch, tag, or remote
>     d2 = !gitk --date-order $(git fsck | grep "dangling.commit" | cut -f3 -d' ') --not --branches --tags --remotes
>
> (Apologies if something like this was already said; I was not following
> the discussion closely enough to notice)

Yup.

A potential problem is that the output from "log -g --pretty=%H" or
"fsck | grep dangling" may turn out to be humongous.  Other than
that, they correctly compute what you want.