From 10d0c5dfeb9749f4226f86d5ac915718c5bec5c9 Mon Sep 17 00:00:00 2001
From: Ryo Nihei <nihei.dev@gmail.com>
Date: Thu, 25 Nov 2021 23:11:50 +0900
Subject: Make character properties available in an inverse expression (Make
 [^\p{...}] available)

---
 compiler/parser.go | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'compiler/parser.go')

diff --git a/compiler/parser.go b/compiler/parser.go
index d64b79c..5d1a38d 100644
--- a/compiler/parser.go
+++ b/compiler/parser.go
@@ -652,6 +652,10 @@ func genNormalCharAST(c rune) astNode {
 }
 
 func exclude(symbol, base astNode) astNode {
+	if alt, ok := symbol.(*altNode); ok {
+		return exclude(alt.right, exclude(alt.left, base))
+	}
+	
 	switch base.(type) {
 	case *altNode:
 		left, right := base.children()
-- 
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