diff --git a/re_test.go b/re_test.go
index c9a1642..bd54de4 100644
--- a/re_test.go
+++ b/re_test.go
@@ -212,12 +212,19 @@ var reTests = []struct {
 	{`ab*bc`, nil, `abc`, []Group{{0, 3}}},
 	{`ab*bc`, nil, `abbc`, []Group{{0, 4}}},
 	{`ab*bc`, nil, `abbbbc`, []Group{{0, 6}}},
+	{`ab{0,}c`, nil, `abbbbc`, []Group{{0, 6}}},
 	{`ab+bc`, nil, `abbc`, []Group{{0, 4}}},
 	{`ab+bc`, nil, `abc`, []Group{}},
 	{`ab+bc`, nil, `abq`, []Group{}},
+	{`ab{1,}bc`, nil, `abq`, []Group{}},
 	{`ab+bc`, nil, `abbbbc`, []Group{{0, 6}}},
+	{`ab{1,}bc`, nil, `abbbbc`, []Group{{0, 6}}},
+	{`ab{1,3}bc`, nil, `abbbbc`, []Group{{0, 6}}},
+	{`ab{3,4}bc`, nil, `abbbbc`, []Group{{0, 6}}},
+	{`ab{4,5}bc`, nil, `abbbbc`, []Group{}},
 	{`ab?bc`, nil, `abbc`, []Group{{0, 4}}},
 	{`ab?bc`, nil, `abc`, []Group{{0, 3}}},
+	{`ab{0,1}bc`, nil, `abc`, []Group{{0, 3}}},
 	{`ab?bc`, nil, `abbbbc`, []Group{}},
 	{`ab?c`, nil, `abc`, []Group{{0, 3}}},
 	{`^abc$`, nil, `abc`, []Group{{0, 3}}},
@@ -281,6 +288,7 @@ var reTests = []struct {
 	{`a\(*b`, nil, `a((b`, []Group{{0, 4}}},
 	{`a\\b`, nil, `a\b`, []Group{{0, 3}}},
 	{`a+b+c`, nil, `aabbabc`, []Group{{4, 7}}},
+	{`a{1,}b{1,}c`, nil, `aabbabc`, []Group{{4, 7}}},
 	{`)(`, nil, `-`, nil},
 	{`[^ab]*`, nil, `cde`, []Group{{0, 3}, {3, 3}}},
 	{`abc`, nil, ``, []Group{}},
@@ -298,6 +306,17 @@ var reTests = []struct {
 	{`[k]`, nil, `ab`, []Group{}},
 	{`a[-]?c`, nil, `ac`, []Group{{0, 2}}},
 	{`^(.+)?B`, nil, `AB`, []Group{{0, 2}}},
+	{`\0009`, nil, "\x009", []Group{{0, 2}}},
+	{`\141`, nil, "a", []Group{{0, 1}}},
+
+	{`*a`, nil, ``, nil},
+	{`(*)b`, nil, ``, nil},
+	{`a**`, nil, ``, nil},
+
+	{`^`, nil, `abc`, []Group{{0, 0}}},
+	{`$`, nil, `abc`, []Group{{3, 3}}},
+	{`a[b-]`, nil, `a-`, []Group{{0, 2}}},
+	{`a[b-a]`, nil, `a-`, nil},
 
 	// At this point, the python test suite has a bunch
 	// of backreference tests. Since my engine doesn't
@@ -340,8 +359,11 @@ var groupTests = []struct {
 	{`((a))`, nil, `abc`, []Match{[]Group{{0, 1}, {0, 1}, {0, 1}}}},
 	{`(a)b(c)`, nil, `abc`, []Match{[]Group{{0, 3}, {0, 1}, {2, 3}}}},
 	{`(a+|b)*`, nil, `ab`, []Match{[]Group{{0, 2}, {1, 2}}, []Group{{2, 2}}}},
+	{`(a+|b){0,}`, nil, `ab`, []Match{[]Group{{0, 2}, {1, 2}}, []Group{{2, 2}}}},
 	{`(a+|b)+`, nil, `ab`, []Match{[]Group{{0, 2}, {1, 2}}}},
+	{`(a+|b){1,}`, nil, `ab`, []Match{[]Group{{0, 2}, {1, 2}}}},
 	{`(a+|b)?`, nil, `ab`, []Match{[]Group{{0, 1}, {0, 1}}, []Group{{1, 2}, {1, 2}}, []Group{{2, 2}}}},
+	{`(a+|b){0,1}`, nil, `ab`, []Match{[]Group{{0, 1}, {0, 1}}, []Group{{1, 2}, {1, 2}}, []Group{{2, 2}}}},
 	{`(a|b|c|d|e)f`, nil, `ef`, []Match{[]Group{{0, 2}, {0, 1}}}},
 	{`(ab|cd)e`, nil, `abcde`, []Match{[]Group{{2, 5}, {2, 4}}}},
 	{`^(ab|cd)e`, nil, `abcde`, []Match{}},
@@ -361,6 +383,7 @@ var groupTests = []struct {
 	{`(bc+d$|ef*g.|h?i(j|k))`, nil, `bcdd`, []Match{}},
 	{`(bc+d$|ef*g.|h?i(j|k))`, nil, `reffgz`, []Match{[]Group{{1, 6}, {1, 6}}}},
 	{`(((((((((a)))))))))`, nil, `a`, []Match{[]Group{{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}}}},
+	{`(((((((((a)))))))))\41`, nil, `a`, []Match{[]Group{{0, 2}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}}}},
 	{`(.*)c(.*)`, nil, `abcde`, []Match{[]Group{{0, 5}, {0, 2}, {3, 5}}}},
 	{`\((.*), (.*)\)`, nil, `(a, b)`, []Match{[]Group{{0, 6}, {1, 2}, {4, 5}}}},
 
@@ -379,6 +402,9 @@ var groupTests = []struct {
 	{`([abc]*)x`, nil, `abc`, []Match{}},
 	{`([xyz]*)x`, nil, `abcx`, []Match{[]Group{{3, 4}, {3, 3}}}},
 	{`(a)+b|aac`, nil, `aac`, []Match{[]Group{{0, 3}}}},
+	{`([abc])*d`, nil, `abbbcd`, []Match{[]Group{{0, 6}, {4, 5}}}},
+	{`([abc])*bcd`, nil, `abcd`, []Match{[]Group{{0, 4}, {0, 1}}}},
+	{`^(ab|cd)e`, nil, `abcde`, []Match{}},
 }
 
 func TestFindAllMatches(t *testing.T) {