Roundup Robot added the comment:
New changeset ff3312ce1d14 by Vinay Sajip in branch '3.6':
Fixes #28784: Clarified use of shlex.shlex with punctuation_chars.
https://hg.python.org/cpython/rev/ff3312ce1d14
New changeset 46f8188f8646 by Vinay Sajip in branch 'default':
Closes #28784: Merged
New submission from Evan:
(This discussion started on issue28595.)
The new punctuation_chars keyword argument is intended to provide
"compatibility with the parsing performed by common Unix shells like bash,
dash, and sh", however the documentation and examples do not mention that the
user
