branch: give better message when no names specified for rename

diff --git a/t/t3406-rebase-message.sh b/t/t3406-rebase-message.sh
index 6898377910f9fce8ccc73fba7b8140dff53d7ec6..e6a9a0d436f3a28a7de6eaadd7f1f223ae740c64 100755 (executable)
--- a/t/t3406-rebase-message.sh
+++ b/t/t3406-rebase-message.sh
@@ -62,9 +62,16 @@ test_expect_success 'rebase -n overrides config rebase.stat config' '
         ! grep "^ fileX |  *1 +$" diffstat.txt
 '
 
+# Output to stderr:
+#
+#     "Does not point to a valid commit: invalid-ref"
+#
+# NEEDSWORK: This "grep" is fine in real non-C locales, but
+# GETTEXT_POISON poisons the refname along with the enclosing
+# error message.
 test_expect_success 'rebase --onto outputs the invalid ref' '
        test_must_fail git rebase --onto invalid-ref HEAD HEAD 2>err &&
-       grep "invalid-ref" err
+       test_i18ngrep "invalid-ref" err
 '
 
 test_done