[RFC PATCH v2 2/2] notes: don't indent empty lines

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

From: Eric Sunshine <sunshine@sunshineco.com>

Like other Git commands, `git notes` takes care to call `stripspace` on
the user-supplied note content, thereby ensuring that it has no trailing
whitespace, among other cleanups. However, when notes are inserted into
a patch via `git format-patch --notes`, all lines of the note are
indented unconditionally, including empty lines, which leaves trailing
whitespace on lines which previously were empty, thus negating the
normalization done earlier. Fix this shortcoming.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 notes.c          |  2 +-
 t/t3301-notes.sh | 28 ++++++++++++++--------------
 2 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/notes.c b/notes.c
index f87dac40684..25e0a598996 100644
--- a/notes.c
+++ b/notes.c
@@ -1295,7 +1295,7 @@ static void format_note(struct notes_tree *t, const struct object_id *object_oid
 	for (msg_p = msg; msg_p < msg + msglen; msg_p += linelen + 1) {
 		linelen = strchrnul(msg_p, '\n') - msg_p;
 
-		if (!raw)
+		if (!raw && linelen)
 			strbuf_addstr(sb, "    ");
 		strbuf_add(sb, msg_p, linelen);
 		strbuf_addch(sb, '\n');
diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh
index d742be88402..74e5bfbc863 100755
--- a/t/t3301-notes.sh
+++ b/t/t3301-notes.sh
@@ -326,7 +326,7 @@ test_expect_success 'show -m notes' '
 
 		Notes:
 		${indent}spam
-		${indent}
+
 		${indent}foo
 		${indent}bar
 		${indent}baz
@@ -849,7 +849,7 @@ test_expect_success 'append to note from other note with "git notes append -C"'
 
 		Notes:
 		${indent}yet another note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	note=$(git notes list HEAD^) &&
@@ -887,7 +887,7 @@ test_expect_success 'append to note from other note with "git notes append -c"'
 
 		Notes:
 		${indent}other note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	note=$(git notes list HEAD) &&
@@ -928,7 +928,7 @@ test_expect_success 'copy note with "git notes copy" with default' '
 
 		Notes:
 		${indent}other note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	git notes copy HEAD^ &&
@@ -950,7 +950,7 @@ test_expect_success 'prevent overwrite with "git notes copy"' '
 
 		Notes:
 		${indent}other note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	git log -1 >actual &&
@@ -991,7 +991,7 @@ test_expect_success 'allow overwrite with "git notes copy -f" with default' '
 
 		Notes:
 		${indent}yet another note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	git notes copy -f HEAD~2 &&
@@ -1020,7 +1020,7 @@ test_expect_success 'git notes copy --stdin' '
 
 		Notes:
 		${indent}yet another note
-		${indent}
+
 		${indent}yet another note
 
 		commit $parent
@@ -1031,7 +1031,7 @@ test_expect_success 'git notes copy --stdin' '
 
 		Notes:
 		${indent}other note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	from=$(git rev-parse HEAD~3) &&
@@ -1092,7 +1092,7 @@ test_expect_success 'git notes copy --for-rewrite (enabled)' '
 
 		Notes:
 		${indent}yet another note
-		${indent}
+
 		${indent}yet another note
 
 		commit $parent
@@ -1103,7 +1103,7 @@ test_expect_success 'git notes copy --for-rewrite (enabled)' '
 
 		Notes:
 		${indent}other note
-		${indent}
+
 		${indent}yet another note
 	EOF
 	test_config notes.rewriteMode overwrite &&
@@ -1174,7 +1174,7 @@ test_expect_success 'git notes copy --for-rewrite (append)' '
 
 		Notes:
 		${indent}a fresh note
-		${indent}
+
 		${indent}another fresh note
 	EOF
 	git notes add -f -m"another fresh note" HEAD^ &&
@@ -1199,11 +1199,11 @@ test_expect_success 'git notes copy --for-rewrite (append two to one)' '
 
 		Notes:
 		${indent}a fresh note
-		${indent}
+
 		${indent}another fresh note
-		${indent}
+
 		${indent}append 1
-		${indent}
+
 		${indent}append 2
 	EOF
 	git notes add -f -m"append 1" HEAD^ &&
-- 
2.33.0.737.g0eefde7d76