[3.12] gh-118508: Clarify which characters are matched by \s (GH-119155) (#123671)

miss-islington · nineteendo · web-flow · commit a0c9f51561ac · 2024-09-04T15:36:39.000-07:00
gh-118508: Clarify which characters are matched by `\s` (GH-119155) Clarify re syntax (cherry picked from commit 22fdb8c) Co-authored-by: Nice Zombies <nineteendo19d0@gmail.com>
diff --git a/Doc/library/re.rst b/Doc/library/re.rst
@@ -600,10 +600,9 @@ character ``'$'``.
 
 ``\s``
    For Unicode (str) patterns:
-      Matches Unicode whitespace characters (which includes
-      ``[ \t\n\r\f\v]``, and also many other characters, for example the
-      non-breaking spaces mandated by typography rules in many
-      languages).
+      Matches Unicode whitespace characters (as defined by :py:meth:`str.isspace`).
+      This includes ``[ \t\n\r\f\v]``, and also many other characters, for example the
+      non-breaking spaces mandated by typography rules in many languages.
 
       Matches ``[ \t\n\r\f\v]`` if the :py:const:`~re.ASCII` flag is used.
 
