Some more bugfixes, got regex working as well as the cpp version. (leaks memory like craaazy)

tests/test_regex.krak

@@ -2,11 +2,12 @@ import io:*
 import regex:*
 
 fun main():int {
+    println("concat")
     var reg = regex("ab")
     println(reg.long_match("abab"))
     println(reg.long_match("aab"))
 
-    println("second")
+    println("repitition")
 
     reg = regex("a*b+c")
     println(reg.long_match("bc"))
@@ -15,5 +16,54 @@ fun main():int {
     println(reg.long_match("aaaaaaaaaaaaaaaa"))
     println(reg.long_match("aaaaaaaaaaaaaaaac"))
     println(reg.long_match("aaaaaaaaaaaaaaaab"))
+
+    println("alternation")
+
+    reg = regex("a|b")
+    println(reg.long_match("a"))
+    println(reg.long_match("b"))
+    println(reg.long_match("aa"))
+    println(reg.long_match("bb"))
+    println(reg.long_match("ab"))
+    println(reg.long_match("c"))
+
+    println("perens!")
+    reg = regex("(a|b)*")
+    println(reg.long_match("a"))
+    println(reg.long_match("b"))
+    println(reg.long_match("aa"))
+    println(reg.long_match("bb"))
+    println(reg.long_match("ab"))
+    println(reg.long_match("abbbaaababab"))
+    println(reg.long_match("c"))
+
+    println("optional!")
+    reg = regex("a?b")
+    println(reg.long_match("a"))
+    println(reg.long_match("b"))
+    println(reg.long_match("ab"))
+
+    println("Old Contributed")
+    var re = regex("a*");
+    println(re.long_match("a"));
+    println(re.long_match("aa"));
+    println(re.long_match("aaaab"));
+    println(re.long_match("b"));
+
+    re = regex("a+");
+    println(re.long_match("aa"));
+    println(re.long_match("aaaab"));
+    println(re.long_match("b"));
+
+    re = regex("a(bc)?");
+    println(re.long_match("ab"));
+
+    re = regex("((ab)|c)*");
+    println(re.long_match("ababc"));
+    println(re.long_match("ad"));
+    println(re.long_match("ababccd"));
+
+    re = regex("bbb((bba+)|(ba+))*a*((a+b)|(a+bb)|(a+))*bbb") ;
+    println(re.long_match("bbbababbbaaaaaaaaaaaaaaaaaaabbb"));
     return 0
 }