From 073a0a1169fd99f490f2c67a09df60c7027ed505 Mon Sep 17 00:00:00 2001
From: Simon Chopin <schopin@ubuntu.com>
Date: Thu, 7 Mar 2024 16:51:24 +0100
Subject: [PATCH] Use raw byte string for regex

Fixes SyntaxWarning in Python 3.12 due to invalid escape sequence.
---
 dkim/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dkim/__init__.py b/dkim/__init__.py
index 8b43f15..62971d0 100644
--- a/dkim/__init__.py
+++ b/dkim/__init__.py
@@ -302,7 +302,7 @@ def validate_signature_fields(sig, mandatory_fields=[b'v', b'a', b'b', b'bh', b'
     try:
         str(sig[b'd'], 'ascii')
         # No specials, which is close enough
-        if re.findall(b"[\(\)<>\[\]:;@\\,]", sig[b'd']):
+        if re.findall(rb"[\(\)<>\[\]:;@\\,]", sig[b'd']):
             raise ValidationError("d= value is not valid (%s)" % sig[b'd'])
     except UnicodeDecodeError as e:
         # Not an ASCII domain