Message11796

Author	jeff.allen
Recipients	dani_kase, jeff.allen
Date	2018-03-14.09:08:07
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1521018487.71.0.467229070634.issue2424@psf.upfronthosting.co.za>
In-reply-to

Content
The code in the SO post: FS_ENCODING = 'ascii'; fn = b('[abc\xff]'); encoded = u('[abc\udcff]') appears to be testing/expecting that the invalid ascii character '\xff' will be encoded into the invalid unicode string '\udcff'. This is used in CPython to byte-smuggle non-ascii file names through unicode strings. Jython approaches differently. Versions after 2.7.0 may be able to treat this code more gently. A much fuller consideration is given in #2340, #2342. Maybe allow one/both of these to supersede this ticket?

The code in the SO post:
 FS_ENCODING = 'ascii'; fn = b('[abc\xff]'); encoded = u('[abc\udcff]')
appears to be testing/expecting that the invalid ascii character '\xff' will be encoded into the invalid unicode string '\udcff'. This is used in CPython to byte-smuggle non-ascii file names through unicode strings.

Jython approaches differently. Versions after 2.7.0 may be able to treat this code more gently.

A much fuller consideration is given in #2340, #2342. Maybe allow one/both of these to supersede this ticket?

History
Date	User	Action	Args
2018-03-14 09:08:07	jeff.allen	set	messageid: <1521018487.71.0.467229070634.issue2424@psf.upfronthosting.co.za>
2018-03-14 09:08:07	jeff.allen	set	recipients: + jeff.allen, dani_kase
2018-03-14 09:08:07	jeff.allen	link	issue2424 messages
2018-03-14 09:08:07	jeff.allen	create