showdownjs/test/issues/#332.inconsistent-behavior-of-emphasis-and-strong.html

<p>foo *bar *baz</p>
<p>foo **bar **baz</p>
<p>foo _bar _baz</p>
<p>foo __bar __baz</p>
<p>foo *bar *baz *bazinga</p>
<p>foo **bar **baz **bazinga</p>
<p>foo _bar _baz __bazinga</p>
<p>foo __bar __baz __bazinga</p>
<p><em>f</em></p>
<p><strong>f</strong></p>
<p><em>f</em></p>
<p><strong>f</strong></p>
<p>foo **bar **baz <strong>bazinga bla</strong></p>
<p>foo <strong>bar **baz **bazinga bla</strong></p>
<p>foo <strong>**bar **baz **bazinga bla</strong></p>