[issue23993] Use surrogateescape error handler by default in open() if the locale is C

[STINNER Victor]

New submission from STINNER Victor:

As a following of the issue #19977, I propose to use also the surrogateescape error handler in open() by default if the locale is C.

Attached issue adds a new sys.getdefaulterrorhandler() function and use it in io.TextIOWrapper (and _pyio.TextIOWrapper).

We may use sys.getdefaulterrorhandler() in more places.

I don't think that it would be correct to use in for str.encode() or bytes.decode().

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components: Unicode
files: default_error_handler.patch
keywords: patch
messages: 241405
nosy: ezio.melotti, haypo, ncoghlan
priority: normal
severity: normal
status: open
title: Use surrogateescape error handler by default in open() if the locale is C
versions: Python 3.5
Added file: http://bugs.python.org/file39100/default_error_handler.patch

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<http://bugs.python.org/issue23993>
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