Merge branch 'rs/commit-summary-wo-break-rewrite' into maint

The commit summary shown after making a commit is matched to what
is given in "git status" not to use the break-rewrite heuristics.
source: <c35bd0aa-2e46-e710-2b39-89f18bad0097@web.de>

* rs/commit-summary-wo-break-rewrite:
  commit, sequencer: turn off break_opt for commit summary

sequencer.c

@@ -1327,7 +1327,6 @@ void print_commit_summary(struct repository *r,
 	get_commit_format(format.buf, &rev);
 	rev.always_show_header = 0;
 	rev.diffopt.detect_rename = DIFF_DETECT_RENAME;
-	rev.diffopt.break_opt = 0;
 	diff_setup_done(&rev.diffopt);
 
 	refs = get_main_ref_store(the_repository);

t/t7524-commit-summary.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+test_description='git commit summary'
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+	test_seq 101 200 >file &&
+	git add file &&
+	git commit -m initial &&
+	git tag initial
+'
+
+test_expect_success 'commit summary ignores rewrites' '
+	git reset --hard initial &&
+	test_seq 200 300 >file &&
+
+	git diff --stat >diffstat &&
+	git diff --stat --break-rewrites >diffstatrewrite &&
+
+	# make sure this scenario is a detectable rewrite
+	! test_cmp_bin diffstat diffstatrewrite &&
+
+	git add file &&
+	git commit -m second >actual &&
+
+	grep "1 file" <actual >actual.total &&
+	grep "1 file" <diffstat >diffstat.total &&
+	test_cmp diffstat.total actual.total
+'
+
+test_done