% symbol causes expception when parsing help text #5
Description
Help fields containing a % symbol cause an exception when using the -h or --help flags to parse help text.
% is obviously a special symbol used by the parser for some reason, however there seems to be no documentation of this, or any other reserved symbols.
Exception text - http://pastebin.ubuntu.com/7250072/
Python 2.7.3
Argparse 1.1