--FILE--
<?php
$env = new MtHaml\Environment('twig', array('enable_escaper' => false));
echo $env->compileString($parts['HAML'], "$file.haml");

--HAML--
%p(foo bar="baz")
%p(foo)
%p(bar="baz" foo)
%p(foo class=baz)
--EXPECT--
<p {{ mthaml_attributes([['foo', true], ['bar', 'baz']], 'html5', 'UTF-8', false)|raw }}></p>
<p {{ mthaml_attributes([['foo', true]], 'html5', 'UTF-8', false)|raw }}></p>
<p {{ mthaml_attributes([['bar', 'baz'], ['foo', true]], 'html5', 'UTF-8', false)|raw }}></p>
<p {{ mthaml_attributes([['foo', true], ['class', baz]], 'html5', 'UTF-8', false)|raw }}></p>