[issue6760] patch to subprocess docs to better explain Popen's 'args' argument

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

I like the idea of pointing out that shlex can be used to determine exactly what to pass to subprocess, but I agree that the proposed patch is too wordy (and still too much in a negative voice).

Here is an alternate simpler patch.

Note that while I have also clarified the last sentence in the shell=True case, I think that this is in fact a bug in the Popen API.  As far as I can tell the ability to pass arguments to the shell after the -c is useless, and I think Popen should instead raise a ValueError if passed a sequence when shell is True.  But that is a different bug report....

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nosy: +r.david.murray
priority:  -> normal

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<http://bugs.python.org/issue6760>
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