[PATCH] object-name: fix quiet @{u} parsing

[Felipe Contreras <felipe.contreras@gmail.com>]

Currently `git rev-parse --quiet @{u}` is not actually quiet when
upstream isn't configured:

  fatal: no upstream configured for branch 'foo'

Make it so.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
---
 object-name.c                 | 5 +++--
 t/t1507-rev-parse-upstream.sh | 5 +++++
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/object-name.c b/object-name.c
index 2dd1a0f56e..d9f3a176d8 100644
--- a/object-name.c
+++ b/object-name.c
@@ -898,6 +898,7 @@ static int get_oid_basic(struct repository *r, const char *str, int len,
 	char *real_ref = NULL;
 	int refs_found = 0;
 	int at, reflog_len, nth_prior = 0;
+	int fatal = !(flags & GET_OID_QUIETLY);
 
 	if (len == r->hash_algo->hexsz && !get_oid_hex(str, oid)) {
 		if (warn_ambiguous_refs && warn_on_object_refname_ambiguity) {
@@ -952,11 +953,11 @@ static int get_oid_basic(struct repository *r, const char *str, int len,
 
 	if (!len && reflog_len)
 		/* allow "@{...}" to mean the current branch reflog */
-		refs_found = repo_dwim_ref(r, "HEAD", 4, oid, &real_ref, 0);
+		refs_found = repo_dwim_ref(r, "HEAD", 4, oid, &real_ref, !fatal);
 	else if (reflog_len)
 		refs_found = repo_dwim_log(r, str, len, oid, &real_ref);
 	else
-		refs_found = repo_dwim_ref(r, str, len, oid, &real_ref, 0);
+		refs_found = repo_dwim_ref(r, str, len, oid, &real_ref, !fatal);
 
 	if (!refs_found)
 		return -1;
diff --git a/t/t1507-rev-parse-upstream.sh b/t/t1507-rev-parse-upstream.sh
index c34714ffe3..549eb315a9 100755
--- a/t/t1507-rev-parse-upstream.sh
+++ b/t/t1507-rev-parse-upstream.sh
@@ -183,6 +183,11 @@ test_expect_success '@{u} error message when no upstream' '
 	test_cmp expect actual
 '
 
+test_expect_success '@{u} silent error when no upstream' '
+	test_must_fail git rev-parse --verify --quiet @{u} 2>actual &&
+	test_must_be_empty actual
+'
+
 test_expect_success 'branch@{u} error message with misspelt branch' '
 	cat >expect <<-EOF &&
 	fatal: no such branch: ${SQ}no-such-branch${SQ}
-- 
2.39.2.13.g1fb56cf030