#2650: re.escape() no longer escapes the "_".
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
index 3e9cf02..b1c3804 100644
--- a/Doc/library/re.rst
+++ b/Doc/library/re.rst
@@ -689,9 +689,12 @@
.. function:: escape(string)
- Return *string* with all non-alphanumerics backslashed; this is useful if you
- want to match an arbitrary literal string that may have regular expression
- metacharacters in it.
+ Escape all the characters in pattern except ASCII letters, numbers and ``'_'``.
+ This is useful if you want to match an arbitrary literal string that may
+ have regular expression metacharacters in it.
+
+ .. versionchanged:: 3.3
+ The ``'_'`` character is no longer escaped.
.. function:: purge()