Add regression test for commonmark#526.

jgm · jgm · commit 07a84eeabd42 · 2019-03-17T10:25:19.000-07:00
diff --git a/test/regression.txt b/test/regression.txt
@@ -121,3 +121,11 @@ Issue #530 - link parsing corner cases
 <p><a href="%3C%3Cb">a</a></p>
 <p><a href="%3Cb">a</a></p>
 ````````````````````````````````
+
+Issue commonmark#526 - unescaped ( in link title
+
+```````````````````````````````` example
+[link](url ((title))
+.
+<p>[link](url ((title))</p>
+````````````````````````````````
