[issue20970] contradictory documentation for prog option of argparse

[Aaron Meurer]

Aaron Meurer added the comment:

The next sentence further confuses things, "This default is almost always desirable because it will make the help messages match how the program was invoked on the command line." It makes it sound like it really did intend to use sys.argv[0] literally.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20970>
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