#data
<?a?><b/>
#errors
#document
| <?a ?>
| <{} b>

#data
<?aBcDefG?><b/>
#errors
#document
| <?aBcDefG ?>
| <{} b>

#data
<!DOCTYPE b><?a?><b/>
#errors
#document
| <!DOCTYPE b>
| <?a ?>
| <{} b>

#data
<b/><?a?>
#errors
#document
| <{} b>
| <?a ?>

#data
<b><?a?></b>
#errors
#document
| <{} b>
|   <?a ?>

#data
<?
#errors
1;1;bare pio;;;m
1;2;no root element;;;m
#document
| <!-- ? -->

#data
<!DOCTYPE a><?
#errors
1;13;bare pio;;;m
1;14;no root element;;;m
#document
| <!DOCTYPE a>
| <!-- ? -->

#data
<p><?
#errors
1;4;bare pio;;;m
1;5;in body:#eof;;;m
#document
| <{} p>
|   <!-- ? -->

#data
<a/><?
#errors
1;5;bare pio;;;m
#document
| <{} a>
| <!-- ? -->

#data escaped
<?\u0020
#errors
1;1;bare pio;;;m
1;3;no root element;;;m
#document
| <!-- ?  -->

#data
<?<a>
#errors
1;5;no pic;;;m
1;5;no root element;;;m
#document
| <?<a> ?>

#data
<?>
#errors
1;3;no pic;;;m
1;3;no root element;;;m
#document
| <?> ?>

#data
<??>
#errors
1;1;bare pio;;;m
1;4;no root element;;;m
#document
| <!-- ?? -->

#data
<??a?>
#errors
1;1;bare pio;;;m
1;6;no root element;;;m
#document
| <!-- ??a? -->

#data
<?a?b?>
#errors
1;4;no s after target;;;m
1;7;no root element;;;m
#document
| <?a ?b?>

#data
<?abc def?>
#errors
1;11;no root element;;;m
#document
| <?abc def?>

#data
<?abc   def?>
#errors
1;13;no root element;;;m
#document
| <?abc def?>

#data
<?abc "?>"?>
#errors
1;10;text outside of root element;;;m
1;12;no root element;;;m
#document
| <?abc "?>
| ""?>"

#data
<?abc??>
#errors
1;6;no s after target;;;m
1;8;no root element;;;m
#document
| <?abc ??>

#data
<?abc???>
#errors
1;6;no s after target;;;m
1;9;no root element;;;m
#document
| <?abc ???>

#data
<?abc ???><a/>
#errors
#document
| <?abc ???>
| <{} a>

#data
<?abc ?a?b?c?><a/>
#errors
#document
| <?abc ?a?b?c?>
| <{} a>

#data
<?a
#errors
1;3;no pic;;;m
1;3;no root element;;;m
#document
| <?a ?>

#data
<?abc
#errors
1;5;no pic;;;m
1;5;no root element;;;m
#document
| <?abc ?>

#data escaped
<?abc\u0020
#errors
1;6;no pic;;;m
1;6;no root element;;;m
#document
| <?abc ?>

#data
<?abc?
#errors
1;6;no s after target;;;m
1;6;no pic;;;m
1;6;no root element;;;m
#document
| <?abc ??>

#data
<?abc ?
#errors
1;7;no pic;;;m
1;7;no root element;;;m
#document
| <?abc ??>

#data
<?abc def
#errors
1;9;no pic;;;m
1;9;no root element;;;m
#document
| <?abc def?>

#data escaped
<?abc def\u0009  g  ?><a/>
#errors
#document escaped
| <?abc def\u0009  g  ?>
| <{} a>