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builtin/notes: fix premature failure when trying to add the empty blob 

This fixes a small buglet when trying to explicitly add the empty blob
as a note object using the -c or -C option to git notes add/append.
Instead of failing with a nonsensical error message indicating that the
empty blob does not exist, we should rather behave as if an empty notes
message was given (e.g. using -m "" or -F /dev/null).

The next patch contains a test that verifies the fixed behavior.

Found-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Johan Herland <johan@herland.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johan Herland 2014-11-09 13:30:47 +01:00 committed by Junio C Hamano
parent 66edfe9ddc
commit 511726e4b1
1 changed files with 1 additions and 1 deletions
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builtin/notes.c
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@ -266,7 +266,7 @@ static int parse_reuse_arg(const struct option *opt, const char *arg, int unset)
if (get_sha1(arg, object))
die(_("Failed to resolve '%s' as a valid ref."), arg);
if (!(buf = read_sha1_file(object, &type, &len)) || !len) {
if (!(buf = read_sha1_file(object, &type, &len))) {
free(buf);
die(_("Failed to read object '%s'."), arg);
}