nice enum works

vlib/compiler/parser.v

@@ -2456,7 +2456,7 @@ fn (p mut Parser) indot_expr() string {
 	if p.tok == .key_in {
 		p.fgen(' ')
 		p.check(.key_in)
-		//if p.pref.is_debug && p.tok == .lsbr {
+		p.expected_type = typ // this allows `foo in [.val1, .val2, .val3]`
 		if p.tok == .lsbr {
 			// a in [1,2,3] optimization => `a == 1 || a == 2 || a == 3`
 			// avoids an allocation

vlib/compiler/tests/enum_test.v

@@ -22,3 +22,9 @@ fn test_enum() {
 	color = .green
 	assert color == Color.green
 }
+
+fn test_in() {
+	color := Color.red
+	num := 3
+	assert color in [.red, .green]
+}