<foo data-items='{&quot;foo&quot;:&quot;bar&quot;,&quot;yah&quot;:42,&quot;yoh&quot;:&quot;yah: 42&quot;,&quot;bar&quot;:&quot;a&#039;a\&quot;\\\&quot;\\&#039;\\\\&quot;}'></foo>
<foo data-items='{&quot;foo&quot;:&quot;#{foo}, \\#{foo}&quot;,&quot;bar&quot;:&quot;#{foo}, \\#{foo}&quot;}'></foo>
<foo data-items='[&quot;#{foo} [a]&quot;,&quot;#{foo} =&gt;&quot;]'></foo>
<foo data-items='{&quot;a\\\&quot;\\&quot;:&quot;a&quot;}'></foo>
<foo a'='&#039;a'></foo>