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Message-ID: <4133873F.8090606@alltel.net>
Date: Mon, 30 Aug 2004 14:59:59 -0500
From: Ken Dibble <kdibbleNOSPAM AT alltel DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: Python os.path.join inconsistency?
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Live and Learn.

I guess my limited experience (including not being a windows programmer)
colored my perception.

I had never been able to get any Windows variant I was exposed to,
to accept a forward slash.  So much for my recall device of
Unix Forward, Windows Backward.

Regards,
Ken

Christopher Faylor wrote:

>On Mon, Aug 30, 2004 at 02:48:49PM -0500, Ken Dibble wrote:
>  
>
>>I don't know anything about Python but I do know that
>>
>>'c:/foo' and  'c:/foo/bar' are not windows paths.
>>    
>>
>
>c:/foo and c:/foo/bar are perfectly acceptable windows paths.  Some
>windows utilities don't accept this style of window path on the command
>line but they are recognized by all of the windows functions which use
>paths.
>
>I don't know python but I am not surprised that a cygwin version of
>python would be "confused" by the use of colons in path names since
>avoidance of that kind of path is one of the main reasons for cygwin's
>existence.  The cygwin DLL does try to handle dos paths correctly but
>that doesn't mean that a UNIX program which manipulates UNIX path names
>will be happy to see them.
>
>cgf
>
>  
>
>>c:\foo and c:\foo\bar are.
>>
>>This probably doesn't help though.
>>
>>Andres Corrada-Emmanuel wrote:
>>    
>>
>>>I just ran across an inconsistency on the os.path module for Cygwin
>>>Python, specifically os.path.join:
>>>
>>>      
>>>
>>>>>>import os.path
>>>>>>os.path.join( 'c:/foo', 'c:/foo/bar' )
>>>>>>      
>>>>>>
>>>>>>            
>>>>>>
>>>'c:foo/c:/foo/bar'
>>>
>>>
>>>      
>>>
>>>>>>os.path.join( '/cygdrive/c/foo', '/cygdrive/c/foo/bar' )
>>>>>>      
>>>>>>
>>>>>>            
>>>>>>
>>>'/cygdrive/c/foo/bar'
>>>
>>>The first incantation of os.path.join with Windows style paths violates
>>>the documentation statement that os.path.join neglects previous paths once
>>>it encounters an absolute path.
>>>
>>>Does it not seem inconsistent that if Cygwin Python understands how to
>>>execute:
>>>
>>>file( 'c:/foo/bar' ) as well as file( '/cygdrive/c/foo/bar' )
>>>
>>>it should also treat Windows style paths correctly with os.path.join? In
>>>other words, it seems that Python on Cygwin cannot default to using
>>>posixpath.py for os.path. It's got to be posixpath.py with some additional
>>>magic to get it to do os.path.join correctly.
>>>
>>>How does one go about submitting a patch for Cygwin Python?
>>>
>>>Andres Corrada-Emmanuel
>>>Senior Research Fellow
>>>Information Extraction and Synthesis Laboratory
>>>University of Massachusetts, Amherst
>>>
>>>
>>>
>>>      
>>>
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>


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