From: Guido van Rossum <guido@python.org>
Date: Thu, 19 Feb 1998 21:18:56 +0000 (+0000)
Subject: Fix for literal null bytes -- these must be replaced by the four
X-Git-Tag: v1.5.1~641
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b1908846af1c70e77917d56798daa8242d80d2b5;p=python

Fix for literal null bytes -- these must be replaced by the four
characters \, 0, 0, 0.
---

diff --git a/Lib/re.py b/Lib/re.py
index 3fb9408367..e67d142ff1 100644
--- a/Lib/re.py
+++ b/Lib/re.py
@@ -66,8 +66,9 @@ def escape(pattern):
     alphanum=string.letters+'_'+string.digits
     for char in pattern:
 	if char not in alphanum:
-	    result.append('\\')
-	result.append(char)
+	    if char == '\000': result.append(r'\000')
+	    else: result.append('\\' + char)
+	else: result.append(char)
     return string.join(result, '')
 
 def compile(pattern, flags=0):