lang: state with confusing error

testfiles/test.owo

@@ -1,18 +1,7 @@
-def main = meow
-	| uwu 
-		{ foo: @bar 
-		, hello: world @| test { more: params } | yay 
-		}
-	!| awa 
-	@| nya 
-	| rawr;
+def blend1 = [ 
+		open "test.png", 
+		open "test2.png" 
+	] 
+	| blend multiply 0.6
 
-def test = meow 
-	{ hello: $foo
-	, world: @bar 
-	};
-
-def blah = {
-	pipe1: meow | uwu,
-	pipe2: lorem | ipsum
-} | flkjdsafkjl;
+def blend2 = open "test.png" | blend multiply 0.6 [ open test2.png ]