[Python-bugs-list] [ python-Bugs-666444 ] 'help' makes linefeed only under Win32

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Bugs item #666444, was opened at 2003-01-11 20:04
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>Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Gregory Smith (gregsmith)
>Assigned to: Tim Peters (tim_one)
Summary: 'help' makes linefeed only under Win32

Initial Comment:
The 'help' command, under a win32 console app, separates
lines with \n instead of \r\n as it has in the past,
making its
output a little hard to follow. Possibly an unintended
side effect
of the 'universal newline' addition?

Python 2.3a1 (#38, Dec 31 2002, 17:53:59) [MSC v.1200
32 bit (Intel)] on win32

(windows 98)



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>Comment By: Neal Norwitz (nnorwitz)
Date: 2003-02-06 20:49

Message:
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Looking at the code, I don't see any problems.  I'm guessing
this may be a windows issue.  Universal newlines only seems
to affect reading, so shouldn't be an issue.  Hopefully Tim
has time, interest, and a clue, since I don't.  Tim, do you
know if there is a difference between fopen() and fdopen()
on windows?

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Comment By: Gregory Smith (gregsmith)
Date: 2003-01-16 00:05

Message:
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Tracked this down to a change in pydoc.py:
---------------- 2.2.2 -------------------------
def tempfilepager(text, cmd):
    import tempfile
    filename = tempfile.mktemp()
    file = open(filename, 'w')
    file.write(text)
    file.close()
------------------2.3 -------------------------
def tempfilepager(text, cmd):
    import tempfile
    (fd, filename) = tempfile.mkstemp()
    file = os.fdopen(fd, 'w')
    file.write(text)
    file.close()
------------------------------------------------
It seems the use of fdopen means that \n's don't
get  changed to \r\n when the file is written, even though
'w' is used. Whether this should be fixed by modding this
code, or whether this is a fdopen bug, I don't know.



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