From 09bed9a9f53e11218be9b7c70dac516986e2ecdb Mon Sep 17 00:00:00 2001
From: James Westman <james@jwestman.net>
Date: Thu, 28 Sep 2023 18:17:43 -0500
Subject: [PATCH] tokenizer: Fix QUOTED regex

unescape_quote() assumed that a QUOTED token wouldn't end in the middle
of an escape sequence, but that assumption could fail (a bug found by
the fuzzer).
---
 blueprintcompiler/tokenizer.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/blueprintcompiler/tokenizer.py b/blueprintcompiler/tokenizer.py
index 1ab6def..33ae272 100644
--- a/blueprintcompiler/tokenizer.py
+++ b/blueprintcompiler/tokenizer.py
@@ -39,8 +39,8 @@ class TokenType(Enum):
 
 _tokens = [
     (TokenType.IDENT, r"[A-Za-z_][\d\w\-_]*"),
-    (TokenType.QUOTED, r'"(\\"|[^"\n])*"'),
-    (TokenType.QUOTED, r"'(\\'|[^'\n])*'"),
+    (TokenType.QUOTED, r'"(\\.|[^\\"\n])*"'),
+    (TokenType.QUOTED, r"'(\\.|[^\\'\n])*'"),
     (TokenType.NUMBER, r"0x[A-Za-z0-9_]+"),
     (TokenType.NUMBER, r"[\d_]+(\.[\d_]+)?"),
     (TokenType.NUMBER, r"\.[\d_]+"),