[Python-Dev] PEP 383: Non-decodable Bytes in System Character Interfaces

[Toshio Kuratomi]

Glenn Linderman wrote:
> On approximately 4/24/2009 11:40 AM, came the following characters from
> And so my encoding (1) doesn't alter the data stream for any valid
> Windows file name, and where the naivest of users reside (2) doesn't
> alter the data stream for any Posix file name that was encoded as UTF-8
> sequences and doesn't contain ? characters in the file name [I perceive
> the use of ? in file names to be rare on Posix, because of experience,
> and because of the other problems caused by such use] (3) doesn't
> introduce data puns within applications that are correctly coded to know
> the encoding occurs.  The encoding technique in the PEP not only can
> produce data puns, thus not being reversible, it provides no reliable
> mechanism to know that this has occurred.
> 
Uhm....  Not arguing with your goals but '?' is unfortunately reasonably
easy to get into a filename.  For instance, I've had to download a lot
of scratch built packages from our buildsystem recently.  Scratch builds
have url's with query strings in them so::

wget
'http://koji.fedoraproject.org/koji/getfile?taskID=1318059&name=monodevelop-debugger-gdb-2.0-1.1.i586.rpm'

Which results in the filename:
  getfile?taskID=1318059&name=monodevelop-debugger-gdb-2.0-1.1.i586.rpm

-Toshio

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