[issue29240] Implementation of the PEP 540: Add a new UTF-8 mode

[STINNER Victor]

STINNER Victor added the comment:

Examples with pep540_cli.py.

Python 3.5:

$ python3 pep540_cli.py 
sys.argv: ['pep540_cli.py']
stdin: UTF-8/strict
stdout: UTF-8/strict
stderr: UTF-8/backslashreplace
open(): UTF-8/strict

$ LC_ALL=C python3 pep540_cli.py 
sys.argv: ['pep540_cli.py']
stdin: ANSI_X3.4-1968/surrogateescape
stdout: ANSI_X3.4-1968/surrogateescape
stderr: ANSI_X3.4-1968/backslashreplace
open(): ANSI_X3.4-1968/strict


Patched Python 3.7:


$ ./python pep540_cli.py 
UTF-8 mode: 0
sys.argv: ['pep540_cli.py']
stdin: UTF-8/strict
stdout: UTF-8/strict
stderr: UTF-8/backslashreplace
open(): UTF-8/strict

$ LC_ALL=C ./python pep540_cli.py 
UTF-8 mode: 1
sys.argv: ['pep540_cli.py']
stdin: utf-8/surrogateescape
stdout: utf-8/surrogateescape
stderr: utf-8/backslashreplace
open(): utf-8/surrogateescape

$ ./python -X utf8 pep540_cli.py 
UTF-8 mode: 1
sys.argv: ['pep540_cli.py']
stdin: utf-8/surrogateescape
stdout: utf-8/surrogateescape
stderr: utf-8/backslashreplace
open(): utf-8/surrogateescape

$ ./python -X utf8=strict pep540_cli.py 
UTF-8 mode: 2
sys.argv: ['pep540_cli.py']
stdin: utf-8/strict
stdout: utf-8/strict
stderr: utf-8/backslashreplace
open(): utf-8/strict

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29240>
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