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From:   Junio C Hamano <gitster@pobox.com>
To:     Piotr Krukowiecki <piotr.krukowiecki@gmail.com>
Cc:     Derrick Stolee <stolee@gmail.com>,
        Git Mailing List <git@vger.kernel.org>
Subject: Re: git-log on a file, and merges
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        (Piotr Krukowiecki's message of "Fri, 2 Aug 2019 21:21:28 +0200")
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Piotr Krukowiecki <piotr.krukowiecki@gmail.com> writes:

> At this moment I'm not sure myself if I consider this a bug or not.

This definitely is not a bug but is a designed and intended
behaviour.

Think of running "git log" without "--full-history" that is limited
with a pathspec as a tool to ask Git to show _one_ way (preferrably
the simplest one) to explain how the current contents in paths that
match the pathspec came to be.  The "just explain to me one way" is
not about machine performance but reducing the clutter in the output
to help human reader(s) reading an otherwise complex history.