bbetter document popenX 'cmd' argument

[jepler]

BPO	1042705
Files	popen-doc-patch: produced by 'cvs diff -u'

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2004-10-11.18:13:40.000>
created_at = <Date 2004-10-08.01:43:04.000>
labels = ['docs']
title = "bbetter document popenX 'cmd' argument"
updated_at = <Date 2004-10-11.18:13:40.000>
user = 'https://bugs.python.org/jepler'

bugs.python.org fields:

activity = <Date 2004-10-11.18:13:40.000>
actor = 'jlgijsbers'
assignee = 'jlgijsbers'
closed = True
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2004-10-08.01:43:04.000>
creator = 'jepler'
dependencies = []
files = ['6283']
hgrepos = []
issue_num = 1042705
keywords = ['patch']
message_count = 2.0
messages = ['47024', '47025']
nosy_count = 2.0
nosy_names = ['jepler', 'jlgijsbers']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue1042705'
versions = []

[jepler]

Documentation and docstrings for the 'cmd'-as-sequence
usage of popenX functions in os and popen2 on unix.
All texts are a variation on the following:
On \UNIX, \var{cmd} may be a sequence, in which
case arguments will be passed directly to the program
without shell intervention (as with
\function{os.spawnv()}. If \var{cmd} is a string it
will be passed to the shell (as with
\function{os.system()}).

See also 888380 for an older patch addressing the same
issue. If this patch is applied, that tracker item
should be closed too.

[jlgijsbers]

Logged In: YES
user_id=469548

Checking in Doc/lib/libos.tex;
/cvsroot/python/python/dist/src/Doc/lib/libos.tex,v <--
libos.tex
new revision: 1.143; previous revision: 1.142
done
Checking in Doc/lib/libpopen2.tex;
/cvsroot/python/python/dist/src/Doc/lib/libpopen2.tex,v <--
libpopen2.tex
new revision: 1.23; previous revision: 1.22
done
Checking in Lib/os.py;
/cvsroot/python/python/dist/src/Lib/os.py,v <-- os.py
new revision: 1.83; previous revision: 1.82
/cvsroot/python/python/dist/src/Doc/lib
done
Checking in Lib/popen2.py;
/cvsroot/python/python/dist/src/Lib/popen2.py,v <-- popen2.py
new revision: 1.30; previous revision: 1.29
done

I made a couple of changes before checking in:

• In libos.tex, I moved the text out of the popen4 function
  description, and into the block above the popen2/3/4
  definitions.
• In libpopen.text, I moved the text up a bit.
• In popen2.py, I added the text to the functions in the
  other block of platforms as well.