[Python-Dev] forwarded message from Guido van Rossum (original) (raw)

Barry A. Warsaw barry@zope.com
Mon, 22 Oct 2001 01:36:38 -0400

With a cvs update, test_email.py fails because the behavior of re.split() has changed, presumably due to /F's latest sre checkins. Here's a boiled down example:

-------------------- snip snip -------------------- import re

ecre = re.compile(r''' =? # literal =? (?P[^?]?) # non-greedy up to the next ? is the charset ? # literal ? (?P[qb]) # either a "q" or a "b", case insensitive ? # literal ? (?P.?) # non-greedy up to the next ?= is the atom ?= # literal ?= ''', re.VERBOSE | re.IGNORECASE)

print ecre.split('=?iso-8859-1?q?this=20is=20some=20text?=', 1) -------------------- snip snip --------------------

In Python 2.2b1 this prints

['', 'iso-8859-1', 'q', 'this=20is=20some=20text', '']

but in today's cvs this prints

['', 'iso-8859-1', 'q', 'this=20is=20some=20text']

Notice the missing trailing empty string. :(

-Barry