From 065a3a0b7bd270318bb322c4c9d21f78173023ea Mon Sep 17 00:00:00 2001
From: Peter Kolbus <peter.kolbus@garmin.com>
Date: Sat, 29 Jun 2019 10:56:21 -0500
Subject: [PATCH] Fix anomalous backslashes in strings

Python 3.8 emits a SyntaxWarning for a string with an anomalous
backslash, e.g.:

  <unknown>:127: SyntaxWarning: invalid escape sequence \s

Fix by adding the missing 'r' prefix.

Change-Id: If9ad77c1e1707fa2432c8fc31eeb5e6d2d7200a5
Signed-off-by: Peter Kolbus <peter.kolbus@garmin.com>
---
 src/license_expression/__init__.py       | 2 +-
 src/license_expression/_pyahocorasick.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/license_expression/__init__.py b/src/license_expression/__init__.py
index f856e82..9256ae3 100644
--- a/src/license_expression/__init__.py
+++ b/src/license_expression/__init__.py
@@ -128,7 +128,7 @@ class ExpressionParseError(ParseError, ExpressionError):
 # mapping of lowercase operator strings to an operator object
 OPERATORS = {'and': KW_AND, 'or': KW_OR, 'with': KW_WITH}
 
-_simple_tokenizer = re.compile('''
+_simple_tokenizer = re.compile(r'''
     (?P<symop>[^\s\(\)]+)
      |
     (?P<space>\s+)
diff --git a/src/license_expression/_pyahocorasick.py b/src/license_expression/_pyahocorasick.py
index fefe51f..655de94 100644
--- a/src/license_expression/_pyahocorasick.py
+++ b/src/license_expression/_pyahocorasick.py
@@ -608,7 +608,7 @@ def overlap(self, other):
 
 
 # tokenize to separate text from parens
-_tokenizer = re.compile('''
+_tokenizer = re.compile(r'''
     (?P<text>[^\s\(\)]+)
      |
     (?P<space>\s+)