Re: [PATCH 3/7] diff: add --rename-file

From: Junio C Hamano <gitster@pobox.com>
Date: Jan 20, 2016, 22:47 UTC
Message-ID: <xmqqzivz3m3a.fsf@gitster.mtv.corp.google.com>
In-Reply-To: <1453287968-26000-4-git-send-email-pclouds@gmail.com>

Nguyễn Thái Ngọc Duy  <pclouds@gmail.com> writes:

Show 9 quoted lines

> Git's heuristics to detect renames or copies works most of the time.
> This option can be used to correct the result when it goes wrong.
> Matching pairs get max rename score and override even exact rename
> detection.
>
> Note that --rename-file does not try to break existing diff pairs. So
> if you have "abc => def" in your file, but they are already paired up
> (e.g. "abc => abc" and "def => def") and not broken down by -B, then
> nothing happens.

By the way, how would this interact with "diff -R"?

Do you need to spell --rename-file in reverse before you can run the diff in reverse?