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From:   =?utf-8?B?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>
To:     Junio C Hamano <gitster@pobox.com>
Cc:     git@vger.kernel.org, Linux Kernel <linux-kernel@vger.kernel.org>,
        git-packagers@googlegroups.com,
        Eric Sunshine <sunshine@sunshineco.com>
Subject: Re: [ANNOUNCE] Git v2.20.0-rc1
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In-reply-to: <xmqqmuq25ufc.fsf@gitster-ct.c.googlers.com>
Date:   Thu, 22 Nov 2018 16:58:31 +0100
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On Wed, Nov 21 2018, Junio C Hamano wrote:

>  * The "--no-patch" option, which can be used to get a high-level
>    overview without the actual line-by-line patch difference shown, of
>    the "range-diff" command was earlier broken, which has been
>    corrected.

There's a regression related to this that I wanted to send a headsup
for, but don't have time to fix today. Now range-diff in format-patch
includes --stat output. See e.g. my
https://public-inbox.org/git/20181122132823.9883-1-avarab@gmail.com/

Preliminary patch:

 builtin/log.c         | 3 +++
 t/t3206-range-diff.sh | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/builtin/log.c b/builtin/log.c
index 0fe6f9ba1e..fdaba480d2 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1094,9 +1094,12 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 	}

 	if (rev->rdiff1) {
+		const int oldfmt = rev->diffopt.output_format;
 		fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
+		rev->diffopt.output_format &= ~(DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY);
 		show_range_diff(rev->rdiff1, rev->rdiff2,
 				rev->creation_factor, 1, &rev->diffopt);
+		rev->diffopt.output_format = oldfmt;
 	}
 }

diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index e497c1358f..2e913542f3 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -248,8 +248,10 @@ test_expect_success 'dual-coloring' '
 for prev in topic master..topic
 do
 	test_expect_success "format-patch --range-diff=$prev" '
+		cat actual &&
 		git format-patch --stdout --cover-letter --range-diff=$prev \
 			master..unmodified >actual &&
+		! grep "a => b" actual &&
 		grep "= 1: .* s/5/A" actual &&
 		grep "= 2: .* s/4/A" actual &&
 		grep "= 3: .* s/11/B" actual &&