perf: add test for writing the index

diff --git a/t/t1307-config-blob.sh b/t/t1307-config-blob.sh
index 3c6791e6be705bc823ff180cd481fef3dc939734..eed31ffa30eebaa994b2fee569eb753e2a6a1477 100755 (executable)
--- a/t/t1307-config-blob.sh
+++ b/t/t1307-config-blob.sh
@@ -61,10 +61,7 @@ test_expect_success 'parse errors in blobs are properly attributed' '
        git commit -m broken &&
 
        test_must_fail git config --blob=HEAD:config some.value 2>err &&
-
-       # just grep for our token as the exact error message is likely to
-       # change or be internationalized
-       grep "HEAD:config" err
+       test_i18ngrep "HEAD:config" err
 '
 
 test_expect_success 'can parse blob ending with CR' '