From 8dce37f6b88f0d7f17629c3bef73f14b68263901 Mon Sep 17 00:00:00 2001
From: Mike Naberezny <mike@naberezny.com>
Date: Fri, 12 Apr 2024 12:21:46 -0700
Subject: [PATCH] Fix regular expression warnings on Python 3.12

---
 CHANGES.rst              | 2 ++
 py65/monitor.py          | 4 ++--
 py65/utils/addressing.py | 4 ++--
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/CHANGES.rst b/CHANGES.rst
index e0a74fd..29d0a84 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -5,6 +5,8 @@
   dropped when pasting in larger amounts of text.  This makes it possible
   to paste programs into EhBASIC and Taliforth.  Patch by SamCoVT.
 
+- Fixed regular expression warnings on Python 3.12.
+
 - The ``fill`` command in the monitor now shows an error message if an
   address or value is out of range.
 
diff --git a/py65/monitor.py b/py65/monitor.py
index 99e8fcf..42f755f 100644
--- a/py65/monitor.py
+++ b/py65/monitor.py
@@ -239,7 +239,7 @@ class Monitor(cmd.Cmd):
                 line = command
                 break
 
-            pattern = '^%s\s+' % re.escape(shortcut)
+            pattern = r'^%s\s+' % re.escape(shortcut)
             matches = re.match(pattern, line)
             if matches:
                 start, end = matches.span()
@@ -580,7 +580,7 @@ class Monitor(cmd.Cmd):
         if args == '':
             return
 
-        pairs = re.findall('([^=,\s]*)=([^=,\s]*)', args)
+        pairs = re.findall(r'([^=,\s]*)=([^=,\s]*)', args)
         if pairs == []:
             return self._output("Syntax error: %s" % args)
 
diff --git a/py65/utils/addressing.py b/py65/utils/addressing.py
index 29c4054..ad8e995 100644
--- a/py65/utils/addressing.py
+++ b/py65/utils/addressing.py
@@ -61,7 +61,7 @@ class AddressParser(object):
                 return self.labels[num]
 
             else:
-                matches = re.match('^([^\s+-]+)\s*([+\-])\s*([$+%]?\d+)$', num)
+                matches = re.match(r'^([^\s+-]+)\s*([+\-])\s*([$+%]?\d+)$', num)
                 if matches:
                     label, sign, offset = matches.groups()
 
@@ -88,7 +88,7 @@ class AddressParser(object):
         """Parse a string containing an address or a range of addresses
         into a tuple of (start address, end address)
         """
-        matches = re.match('^([^:,]+)\s*[:,]+\s*([^:,]+)$', addresses)
+        matches = re.match(r'^([^:,]+)\s*[:,]+\s*([^:,]+)$', addresses)
         if matches:
             start, end = map(self.number, matches.groups(0))
         else: