[PATCH v3 10/10] format-patch: pass notes configuration to range-diff

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Since format-patch accepts `--[no-]notes`, one would expect the
range-diff generated to also respect the setting. Unfortunately, the
range-diff we currently generate only uses the default option (which
always outputs default notes, even when notes are not being used
elsewhere).

Pass the notes configuration to range-diff so that it can honor it.

Signed-off-by: Denton Liu <liu.denton@xxxxxxxxx>
---
 builtin/log.c         |  24 +++++++++-
 t/t3206-range-diff.sh | 101 +++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 123 insertions(+), 2 deletions(-)

diff --git a/builtin/log.c b/builtin/log.c
index 047ac4594d..e192f219d9 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1111,6 +1111,25 @@ static void prepare_cover_text(struct pretty_print_context *pp,
 	strbuf_release(&subject_sb);
 }
 
+static int get_notes_refs(struct string_list_item *item, void *arg)
+{
+	argv_array_pushf(arg, "--notes=%s", item->string);
+	return 0;
+}
+
+static void get_notes_args(struct argv_array *arg, struct rev_info *rev)
+{
+	if (!rev->show_notes) {
+		argv_array_push(arg, "--no-notes");
+	} else if (rev->notes_opt.use_default_notes > 0 ||
+		   (rev->notes_opt.use_default_notes == -1 &&
+		    !rev->notes_opt.extra_notes_refs.nr)) {
+		argv_array_push(arg, "--notes");
+	} else {
+		for_each_string_list(&rev->notes_opt.extra_notes_refs, get_notes_refs, arg);
+	}
+}
+
 static void make_cover_letter(struct rev_info *rev, int use_stdout,
 			      struct commit *origin,
 			      int nr, struct commit **list,
@@ -1183,13 +1202,16 @@ static void make_cover_letter(struct rev_info *rev, int use_stdout,
 		 * can be added later if deemed desirable.
 		 */
 		struct diff_options opts;
+		struct argv_array other_arg = ARGV_ARRAY_INIT;
 		diff_setup(&opts);
 		opts.file = rev->diffopt.file;
 		opts.use_color = rev->diffopt.use_color;
 		diff_setup_done(&opts);
 		fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
+		get_notes_args(&other_arg, rev);
 		show_range_diff(rev->rdiff1, rev->rdiff2,
-				rev->creation_factor, 1, &opts, NULL);
+				rev->creation_factor, 1, &opts, &other_arg);
+		argv_array_clear(&other_arg);
 	}
 }
 
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 521b4a83ec..ec2b456dbb 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -576,7 +576,7 @@ test_expect_success 'range-diff with multiple --notes' '
 	test_cmp expect actual
 '
 
-test_expect_success 'format-patch --range-diff compares notes by default' '
+test_expect_success 'format-patch --range-diff does not compare notes by default' '
 	git notes add -m "topic note" topic &&
 	git notes add -m "unmodified note" unmodified &&
 	test_when_finished git notes remove topic unmodified &&
@@ -588,6 +588,40 @@ test_expect_success 'format-patch --range-diff compares notes by default' '
 	grep "= 1: .* s/5/A" 0000-* &&
 	grep "= 2: .* s/4/A" 0000-* &&
 	grep "= 3: .* s/11/B" 0000-* &&
+	grep "= 4: .* s/12/B" 0000-* &&
+	! grep "Notes" 0000-* &&
+	! grep "note" 0000-*
+'
+
+test_expect_success 'format-patch --range-diff with --no-notes' '
+	git notes add -m "topic note" topic &&
+	git notes add -m "unmodified note" unmodified &&
+	test_when_finished git notes remove topic unmodified &&
+	git format-patch --no-notes --cover-letter --range-diff=$prev \
+		master..unmodified >actual &&
+	test_when_finished "rm 000?-*" &&
+	test_line_count = 5 actual &&
+	test_i18ngrep "^Range-diff:$" 0000-* &&
+	grep "= 1: .* s/5/A" 0000-* &&
+	grep "= 2: .* s/4/A" 0000-* &&
+	grep "= 3: .* s/11/B" 0000-* &&
+	grep "= 4: .* s/12/B" 0000-* &&
+	! grep "Notes" 0000-* &&
+	! grep "note" 0000-*
+'
+
+test_expect_success 'format-patch --range-diff with --notes' '
+	git notes add -m "topic note" topic &&
+	git notes add -m "unmodified note" unmodified &&
+	test_when_finished git notes remove topic unmodified &&
+	git format-patch --notes --cover-letter --range-diff=$prev \
+		master..unmodified >actual &&
+	test_when_finished "rm 000?-*" &&
+	test_line_count = 5 actual &&
+	test_i18ngrep "^Range-diff:$" 0000-* &&
+	grep "= 1: .* s/5/A" 0000-* &&
+	grep "= 2: .* s/4/A" 0000-* &&
+	grep "= 3: .* s/11/B" 0000-* &&
 	grep "! 4: .* s/12/B" 0000-* &&
 	sed s/Z/\ /g >expect <<-EOF &&
 	    @@ Commit message
@@ -604,4 +638,69 @@ test_expect_success 'format-patch --range-diff compares notes by default' '
 	test_cmp expect actual
 '
 
+test_expect_success 'format-patch --range-diff with --notes' '
+	git notes add -m "topic note" topic &&
+	git notes add -m "unmodified note" unmodified &&
+	test_when_finished git notes remove topic unmodified &&
+	test_config format.notes true &&
+	git format-patch --cover-letter --range-diff=$prev \
+		master..unmodified >actual &&
+	test_when_finished "rm 000?-*" &&
+	test_line_count = 5 actual &&
+	test_i18ngrep "^Range-diff:$" 0000-* &&
+	grep "= 1: .* s/5/A" 0000-* &&
+	grep "= 2: .* s/4/A" 0000-* &&
+	grep "= 3: .* s/11/B" 0000-* &&
+	grep "! 4: .* s/12/B" 0000-* &&
+	sed s/Z/\ /g >expect <<-EOF &&
+	    @@ Commit message
+	    Z
+	    Z
+	    Z ## Notes ##
+	    -    topic note
+	    +    unmodified note
+	    Z
+	    Z ## file ##
+	    Z@@ file: A
+	EOF
+	sed "/@@ Commit message/,/@@ file: A/!d" 0000-* >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'format-patch --range-diff with multiple notes' '
+	git notes --ref=note1 add -m "topic note1" topic &&
+	git notes --ref=note1 add -m "unmodified note1" unmodified &&
+	test_when_finished git notes --ref=note1 remove topic unmodified &&
+	git notes --ref=note2 add -m "topic note2" topic &&
+	git notes --ref=note2 add -m "unmodified note2" unmodified &&
+	test_when_finished git notes --ref=note2 remove topic unmodified &&
+	git format-patch --notes=note1 --notes=note2 --cover-letter --range-diff=$prev \
+		master..unmodified >actual &&
+	test_when_finished "rm 000?-*" &&
+	test_line_count = 5 actual &&
+	test_i18ngrep "^Range-diff:$" 0000-* &&
+	grep "= 1: .* s/5/A" 0000-* &&
+	grep "= 2: .* s/4/A" 0000-* &&
+	grep "= 3: .* s/11/B" 0000-* &&
+	grep "! 4: .* s/12/B" 0000-* &&
+	sed s/Z/\ /g >expect <<-EOF &&
+	    @@ Commit message
+	    Z
+	    Z
+	    Z ## Notes (note1) ##
+	    -    topic note1
+	    +    unmodified note1
+	    Z
+	    Z
+	    Z ## Notes (note2) ##
+	    -    topic note2
+	    +    unmodified note2
+	    Z
+	    Z ## file ##
+	    Z@@ file: A
+	EOF
+	sed "/@@ Commit message/,/@@ file: A/!d" 0000-* >actual &&
+	test_cmp expect actual
+'
+
 test_done
-- 
2.24.0.450.g7a9a4598a9




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