From f21804ad61af980cd6659ca8471b111675b9d20c Mon Sep 17 00:00:00 2001
From: Senthil Kumaran <senthil@uthcode.com>
Date: Tue, 26 Jun 2012 14:17:19 +0800
Subject: [PATCH] Issue #13685 - Update argparse help message for % sign usage.

---
 Doc/library/argparse.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 186e12da312..d64f8a28759 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -1082,6 +1082,9 @@ specifiers include the program name, ``%(prog)s`` and most keyword arguments to
    optional arguments:
     -h, --help  show this help message and exit
 
+As the help string supports %-formatting, if you want a literal ``%`` to appear
+in the help string, you must escape it as ``%%``.
+
 :mod:`argparse` supports silencing the help entry for certain options, by
 setting the ``help`` value to ``argparse.SUPPRESS``::