[issue2630] repr() should not escape non-ASCII characters

[atsuo ishimoto]

New submission from atsuo ishimoto <ishimoto at users.sourceforge.net>:

In py3k, repr() escapes non-ASCII characters in Unicode to \uXXXX as
Python 2. This is unpleasant feature if you are working with non-latin
characters. This issue was once discussed by Hye-Shik Chang[1], but was
rejected. Here's a new challenge for Python 3 to fix issue.

In this patch, repr() converts special ascii characters such as "\t", 
"\r", "\n", but doesn't convert non-ASCII characters to \uXXXX form. 
Non-ASCII characters are converted by TextIOWrapper on printing. I set 
'errors' attribute of sys.stdout and sys.stderr to 'backslashreplace', so
un-printable characters are converted to '\uXXXX' if your console
cannot print such characters.

This patch breaks five regr tests on my environment. 
I'll fix these tests if this patch is acceptable.

[1] http://mail.python.org/pipermail/python-dev/2002-October/029443.html
http://bugs.python.org/issue479898

----------
components: None
files: diff.txt
messages: 65461
nosy: ishimoto
severity: normal
status: open
title: repr() should not escape non-ASCII characters
type: feature request
versions: Python 3.0
Added file: http://bugs.python.org/file10028/diff.txt

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