Bugs item #1459029, was opened at 2006-03-27 13:54
Message generated for change (Comment added) made by anthonybaxter
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Category: Unicode
Group: Python 2.4
Status: Open
Resolution: None
Priority: 7
Submitted By: Christoph Zwerschke (cito)
Assigned to: Hye-Shik Chang (perky)
Summary: Doubled backslash in repr() method for unicode
Initial Comment:
Here is an issue that caused Kid templates (used by
Turbogears) to malfunction in Python 2.4.3c1.
The problem shows up with the following code:
class s1:
def __repr__(self):
return '\\n'
class s2:
def __repr__(self):
return u'\\n'
print repr(s1()), repr(s2())
I get the following results:
Python 2.3.5: \n \n
Python 2.4.2: \n \n
Python 2.4.3c1: \n \\n
In the output for Python 2.4.3c1, the backslash in the
representation of class2 appears doubled. This did not
happen in earlier Python versions and seems to be a bug.
My vague guess is that the issue may have crept in with
an attempted fix of Bug #1379994.
-- Christoph
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>Comment By: Anthony Baxter (anthonybaxter)
Date: 2006-03-27 17:57
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I'm confused how a checkin from 5+ years ago broke a change
from 3 months ago?
Or am I misunderstanding you?
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Comment By: Hye-Shik Chang (perky)
Date: 2006-03-27 17:56
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Found it!:
http://mail.python.org/pipermail/python-dev/2000-July/005353.html
But their intention had never applied before 2.4.3.
What problem would be if we change PyObject_Repr to use the
default encoding not unicode-escape? (revert r16198)
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Comment By: Hye-Shik Chang (perky)
Date: 2006-03-27 17:38
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Looking the C code, unicode_repr is doing correct.
But the inconsistency came from PyObject_Repr.
This change made it which is intended:
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r16198 | effbot | 2000-07-09 02:43:32 +0900 (ì¼, 09 7 2000)
| 6 lines
- changed __repr__ to use "unicode escape" encoding for unicode
strings, instead of the default encoding.
(see "minidom" thread for discussion, and also patch #100706)
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Comment By: Neal Norwitz (nnorwitz)
Date: 2006-03-27 17:28
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Attached a patch for the test case to be added with fix.
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Comment By: Anthony Baxter (anthonybaxter)
Date: 2006-03-27 16:53
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Confirmed - it's also broken in the trunk, and backing out
the patch for http://www.python.org/sf/1379994 (r41728)
fixes the problem. Perky, you checked this in - can you look
at this soon, please? I don't want to release 2.4.3 until
it's fixed, but I also want to get 2.4.3 out this week.
Thanks for the bug report!
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