[Python-Dev] PEP 383: Non-decodable Bytes in System Character Interfaces (original) (raw)

Toshio Kuratomi a.badger at gmail.com
Fri Apr 24 23:26:12 CEST 2009

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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