diff --git a/test/regression.txt b/test/regression.txt
index ef62b6c7..4e471537 100644
--- a/test/regression.txt
+++ b/test/regression.txt
@@ -518,3 +518,18 @@ foo <!-- test --> more -->
 <p>foo <!-----></p>
 <p>foo <!-- test --> more --&gt;</p>
 ````````````````````````````````
+
+```````````````````````````````` example
+𠮷**(U+20BB7)**
+
+禰󠄀**(ね)**豆子
+
+福︀**(福)**祉︀**(祉)**
+
+**㊙︎**Top Secret**㊙︎**
+.
+<p>𠮷<strong>(U+20BB7)</strong></p>
+<p>禰󠄀<strong>(ね)</strong>豆子</p>
+<p>福︀<strong>(福)</strong>祉︀<strong>(祉)</strong></p>
+<p><strong>㊙︎</strong>Top Secret<strong>㊙︎</strong></p>
+````````````````````````````````