From 976066a466beeb62fa063157d8439dcf81eceb3a Mon Sep 17 00:00:00 2001
From: Ronuk Raval <ronuk.raval@gmail.com>
Date: Tue, 1 Feb 2022 09:09:35 -0500
Subject: [PATCH] Raw strings for RE_BINARY_DIFF

`\s` isn't a valid backslash escape for a normal Python escape, which ends up
"working" since the `\s` gets preserved verbatim.

However, the invalid backslash escape can break other tools that process Python
source code, notably `pytest`s assertion rewriting.
---
 unidiff/constants.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/unidiff/constants.py b/unidiff/constants.py
index 5d82843..9601cd5 100644
--- a/unidiff/constants.py
+++ b/unidiff/constants.py
@@ -64,8 +64,8 @@
 
 RE_BINARY_DIFF = re.compile(
     r'^Binary files? '
-    '(?P<source_filename>[^\t]+?)(?:\t(?P<source_timestamp>[\s0-9:\+-]+))?'
-    '(?: and (?P<target_filename>[^\t]+?)(?:\t(?P<target_timestamp>[\s0-9:\+-]+))?)? (differ|has changed)')
+    r'(?P<source_filename>[^\t]+?)(?:\t(?P<source_timestamp>[\s0-9:\+-]+))?'
+    r'(?: and (?P<target_filename>[^\t]+?)(?:\t(?P<target_timestamp>[\s0-9:\+-]+))?)? (differ|has changed)')
 
 DEFAULT_ENCODING = 'UTF-8'