From abb636c1af7b2fd00a624985f60b7aff07374580 Mon Sep 17 00:00:00 2001
From: Tom <tom@tomforb.es>
Date: Fri, 13 Oct 2017 02:02:04 +0100
Subject: Improved performance of utils.html.escape().

---
 django/utils/html.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

(limited to 'django/utils/html.py')

diff --git a/django/utils/html.py b/django/utils/html.py
index e365cd41f6..4fefbc6355 100644
--- a/django/utils/html.py
+++ b/django/utils/html.py
@@ -30,6 +30,14 @@ simple_url_re = re.compile(r'^https?://\[?\w', re.IGNORECASE)
 simple_url_2_re = re.compile(r'^www\.|^(?!http)\w[^@]+\.(com|edu|gov|int|mil|net|org)($|/.*)$', re.IGNORECASE)
 simple_email_re = re.compile(r'^\S+@\S+\.\S+$')
 
+_html_escapes = {
+    ord('&'): '&amp;',
+    ord('<'): '&lt;',
+    ord('>'): '&gt;',
+    ord('"'): '&quot;',
+    ord("'"): '&#39;',
+}
+
 
 @keep_lazy(str, SafeText)
 def escape(text):
@@ -41,10 +49,7 @@ def escape(text):
     This may result in double-escaping. If this is a concern, use
     conditional_escape() instead.
     """
-    return mark_safe(
-        str(text).replace('&', '&amp;').replace('<', '&lt;')
-        .replace('>', '&gt;').replace('"', '&quot;').replace("'", '&#39;')
-    )
+    return mark_safe(str(text).translate(_html_escapes))
 
 
 _js_escapes = {
-- 
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