t0040-parse-options: improve test coverage

diff --git a/t/t1511-rev-parse-caret.sh b/t/t1511-rev-parse-caret.sh
index 8a5983fcd29d4bb36ef4590eff0adb0e817a6286..e0a49a651fdd3b3f7d9e0f24e00439c9642f896c 100755 (executable)
--- a/t/t1511-rev-parse-caret.sh
+++ b/t/t1511-rev-parse-caret.sh
@@ -6,11 +6,11 @@ test_description='tests for ref^{stuff}'
 
 test_expect_success 'setup' '
        echo blob >a-blob &&
-       git tag -a -m blob blob-tag `git hash-object -w a-blob` &&
+       git tag -a -m blob blob-tag $(git hash-object -w a-blob) &&
        mkdir a-tree &&
        echo moreblobs >a-tree/another-blob &&
        git add . &&
-       TREE_SHA1=`git write-tree` &&
+       TREE_SHA1=$(git write-tree) &&
        git tag -a -m tree tree-tag "$TREE_SHA1" &&
        git commit -m Initial &&
        git tag -a -m commit commit-tag &&