diff --git a/test/pathological_tests.py b/test/pathological_tests.py
@@ -26,6 +26,15 @@ pathological = {
"many emph closers with no openers":
(("a_ " * 65000),
re.compile("(a[_] ){64999}a_")),
+ "many emph openers with no closers":
+ (("_a " * 65000),
+ re.compile("(_a ){64999}_a")),
+ "many link closers with no openers":
+ (("a]" * 65000),
+ re.compile("(a\]){65000}")),
+ "many link openers with no closers":
+ (("[a" * 65000),
+ re.compile("(\[a){65000}")),
"nested brackets":
(("[" * 50000) + "a" + ("]" * 50000),
re.compile("\[{50000}a\]{50000}")),