#data
<p xmlns="http://www.w3.org/1999/xhtml" slot="">a</p>
#errors
/p/@slot;slot:parent not host;w

#data
<unknown xmlns="http://www.w3.org/1999/xhtml" slot="">a</unknown>
#errors
/unknown;element not defined;m
/unknown/@slot;slot:parent not host;w

#data
<p xmlns="http://www.w3.org/1999/xhtml"><span slot="">a</span></p>
#errors

#data
<p xmlns="http://www.w3.org/1999/xhtml"><q slot="">a</q></p>
#errors

#data
<q xmlns="http://www.w3.org/1999/xhtml"><q slot="">a</q></q>
#errors
/q/q/@slot;slot:parent not host;w

#data
<template xmlns="http://www.w3.org/1999/xhtml"><q slot="">a</q></template>
#errors

#data
<template xmlns="http://www.w3.org/1999/xhtml"><q><q slot="">a</q></q></template>
#errors
| #df/q/q/@slot;slot:parent not host;w[t]

#data
<iframe xmlns="http://www.w3.org/1999/xhtml" srcdoc="
  &lt;html slot='x'>&lt;head>&lt;/head>&lt;body>x&lt;/body>&lt;/html>
"></iframe>
#errors
/iframe/@srcdoc;slot:parent not host;w

#data
<p xmlns="http://www.w3.org/1999/xhtml"><span slot="abc">a</span></p>
#errors

#data
<p xmlns="http://www.w3.org/1999/xhtml"><span slot="  ">a</span></p>
#errors

#data
<p xmlns="http://www.w3.org/1999/xhtml">
  <span slot="">a</span>
  <span slot="abc">a</span>
  <span slot="">a</span>
</p>
#errors

#data
<p xmlns="http://www.w3.org/1999/xhtml">
  <span slot="">a</span>
  <span slot="abc">a</span>
  <q><span slot="">a</span></q>
</p>
#errors
/p/q/span/@slot;slot:parent not host;w

#data
<p xmlns="http://www.w3.org/1999/xhtml">
  <q><span slot="" xmlns="">a</span></q>
</p>
#errors
/p/q;no significant content;s
/p/q/span;unknown namespace element;u
/p/q/span;element not allowed:phrasing;m
/p/q/span/@slot;slot:parent not host;w

#data
<p xmlns="http://www.w3.org/1999/xhtml" xmlns:atom="http://www.w3.org/2005/Atom">
  <atom:title slot="">a</atom:title>
  <atom:title slot="abc">a</atom:title>
  <atom:title slot="">a</atom:title>
</p>
#errors
/p;no significant content;s
/p/title;element not allowed:phrasing;m
/p/title/@slot;attribute not defined;m
/p/title;element not allowed:phrasing;m
/p/title/@slot;attribute not defined;m
/p/title;element not allowed:phrasing;m
/p/title/@slot;attribute not defined;m

#rss2
#data
<title slot="x">
</title>
#errors
title/@slot;attribute not defined;m

#rss2
#data
<hoge>
  <title slot="x"/>
</hoge>
#errors
hoge;element not defined;m
hoge/title/@slot;attribute not defined;m
hoge/title/@slot;slot:parent not host;w