Support for cp858

[thatch]

BPO	8016
Nosy	@malemburg, @birkenfeld, @vstinner, @benjaminp, @thatch
Files	cp858.diff: Diffs to create cp858.{txt,py} from cp850.{txt,py} cp858.diff: Diffs to create cp858.{txt,py} from cp850.{txt,py} (v2)

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/benjaminp'
closed_at = <Date 2010-05-24.21:29:20.333>
created_at = <Date 2010-02-25.00:17:57.262>
labels = ['type-feature', 'library']
title = 'Support for cp858'
updated_at = <Date 2010-05-24.21:29:20.299>
user = 'https://github.com/thatch'

bugs.python.org fields:

activity = <Date 2010-05-24.21:29:20.299>
actor = 'georg.brandl'
assignee = 'benjamin.peterson'
closed = True
closed_date = <Date 2010-05-24.21:29:20.333>
closer = 'georg.brandl'
components = ['Library (Lib)']
creation = <Date 2010-02-25.00:17:57.262>
creator = 'thatch'
dependencies = []
files = ['16366', '17301']
hgrepos = []
issue_num = 8016
keywords = ['patch']
message_count = 6.0
messages = ['100081', '105550', '106299', '106313', '106385', '106395']
nosy_count = 5.0
nosy_names = ['lemburg', 'georg.brandl', 'vstinner', 'benjamin.peterson', 'thatch']
pr_nums = []
priority = 'high'
resolution = 'fixed'
stage = 'patch review'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue8016'
versions = ['Python 3.2']

[thatch]

Based on codepage 850, codepage 858 adds support for the euro symbol1. This codepage is used on many thermal receipt printers, such as the Epson TM-T88IV and NCR 7198 as the only way to print a euro. There is no CP858.TXT on the unicode.org ftp, so I've attached the diff of the TXT file to create it from CP850, as well as the diff for cp858.py against cp850.py.

The codepage is supported by java2 and by iconv3, and it'd be nice if future versions of python could support this natively.

Let me know if there's a better way to provide a fix.

[thatch]

Uploading corrected diff -- the old one missed a couple of instances of DOTLESS I -> EURO.

[birkenfeld]

Benjamin: OK to put this in 2.7?

[thatch]

I also noticed that libforensics supplies a codec for cp858, if that's helpful to double-check the implementation. http://code.google.com/p/libforensics/source/browse/code/lf/win/codepage/cp858.py

[benjaminp]

A new codec is quite self-contained, so that's ok.

[birkenfeld]

Thanks all, committed in r81499.