diff --git a/spec.txt b/spec.txt
@@ -4532,6 +4532,18 @@ __foo _bar_ baz__
<p><strong>foo <em>bar</em> baz</strong></p>
.
+.
+**foo, *bar*, baz**
+.
+<p><strong>foo, <em>bar</em>, baz</strong></p>
+.
+
+.
+__foo, _bar_, baz__
+.
+<p><strong>foo, <em>bar</em>, baz</strong></p>
+.
+
But note:
.