[PATCH 2/4] notes: "add -c" refuses to open an editor with non-blobs

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 builtin/notes.c  |    2 ++
 t/t3301-notes.sh |    4 ++++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/builtin/notes.c b/builtin/notes.c
index 9840269..2960535 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -275,6 +275,8 @@ static int parse_reuse_arg(const struct option *opt, const char *arg, int unset)
 		free(buf);
 		die(_("Failed to read object '%s'."), arg);;
 	}
+	if (msg->use_editor && type != OBJ_BLOB)
+		die(_("%s is not a blob, cannot be edited manually"), sha1_to_hex(object));
 	strbuf_add(&(msg->buf), buf, len);
 	free(buf);
 
diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh
index d3fd341..add13bc 100755
--- a/t/t3301-notes.sh
+++ b/t/t3301-notes.sh
@@ -1222,6 +1222,10 @@ test_expect_success 'git notes get-ref (--ref)' '
 	test "$(GIT_NOTES_REF=refs/notes/bar git notes --ref=baz get-ref)" = "refs/notes/baz"
 '
 
+test_expect_success 'non-blobs cannot be edited using editor' '
+	EDITOR=cat test_must_fail git notes add -f -c HEAD^{tree}
+'
+
 test_expect_success 'add -C happily takes object of any kind' '
 	git notes add -f -C HEAD^{tree}
 '
-- 
1.7.8.36.g69ee2

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