Fix Trigraph bug

.gitignore

@@ -1,2 +1,4 @@
 /hscript.swf
 /release.zip
+
+tests/bin/*

hscript/Interp.hx

@@ -183,7 +183,7 @@ class Interp {
 		assignOp("<<=", function(v1, v2) return v1 << v2);
 		assignOp(">>=", function(v1, v2) return v1 >> v2);
 		assignOp(">>>=", function(v1, v2) return v1 >>> v2);
-		assignOp("??=", function(v1, v2) return v1 == null ? v2 : v1);
+		assignOp("??" + "=", function(v1, v2) return v1 == null ? v2 : v1);
 	}
 
 	function checkIsType(e1,e2): Bool {

hscript/Parser.hx

@@ -126,7 +126,7 @@ class Parser {
 			["..."],
 			["&&"],
 			["||"],
-			["=","+=","-=","*=","/=","%=","<<=",">>=",">>>=","|=","&=","^=","=>","??="],
+			["=","+=","-=","*=","/=","%=","<<=",">>=",">>>=","|=","&=","^=","=>","??" + "="],
 			["->", "??"],
 			["is"]
 		];
@@ -1815,7 +1815,7 @@ class Parser {
 					case '?'.code:
 						var orp = readPos;
 						if (readChar() == '='.code)
-							return TOp("??=");
+							return TOp("??" + "=");
 
 						this.readPos = orp;
 						return TOp("??");