completion: simplify tests using test_completion_long()

diff --git a/t/t6500-gc.sh b/t/t6500-gc.sh
index 82f363993712d2c0de44de6285f956b46e1ceaf2..b1a63655f98dfc8d19c1a80f86652654cd9cade6 100755 (executable)
--- a/t/t6500-gc.sh
+++ b/t/t6500-gc.sh
@@ -11,7 +11,7 @@ test_expect_success 'gc empty repository' '
 
 test_expect_success 'gc --gobbledegook' '
        test_expect_code 129 git gc --nonsense 2>err &&
-       grep "[Uu]sage: git gc" err
+       test_i18ngrep "[Uu]sage: git gc" err
 '
 
 test_expect_success 'gc -h with invalid configuration' '
@@ -22,7 +22,7 @@ test_expect_success 'gc -h with invalid configuration' '
                echo "[gc] pruneexpire = CORRUPT" >>.git/config &&
                test_expect_code 129 git gc -h >usage 2>&1
        ) &&
-       grep "[Uu]sage" broken/usage
+       test_i18ngrep "[Uu]sage" broken/usage
 '
 
 test_done