[1m[4m                  filepath                   [0m[1m[4m              descriptor                [0m[1m[4m    mimetype     [0m[1m[4m                   content                    [0m
{test_dir}/textfile_0.md net.daringfireball.markdown.frontmatter application/json {␊   "comment": "This is JSON front-matter"␊} 
