[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 73b00becbdd40f6a80cfa00abf1ae650a2b5e454 by Victor Stinner in 
branch 'master':
bpo-34544: pymain_read_conf() don't change LC_ALL (GH-9045)
https://github.com/python/cpython/commit/73b00becbdd40f6a80cfa00abf1ae650a2b5e454


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset f01b2a1b84ee08df73a78cf1017eecf15e3cb995 by Victor Stinner in 
branch 'master':
bpo-34544: Fix setlocale() in pymain_read_conf() (GH-9041)
https://github.com/python/cpython/commit/f01b2a1b84ee08df73a78cf1017eecf15e3cb995


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:

> Yeah, there were some good reasons I went with the relatively brute force 
> option of provideding Blender with a new config API call back in bpo-16129 - 
> as we've seen, actually fixing it properly has been a multi-year multi-person 
> effort :)

Yeah, I see ;-) Thanks for Py_SetStandardStreamEncoding(), it fixed Blender use 
case!

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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[Nick Coghlan]

Nick Coghlan  added the comment:

Yeah, there were some good reasons I went with the relatively brute force 
option of provideding Blender with a new config API call back in bpo-16129 - as 
we've seen, actually fixing it properly has been a multi-year multi-person 
effort :)

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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset cf21504194927b2f22132f48effea69eb8ade751 by Victor Stinner in 
branch 'master':
bpo-34485: Emit C locale coercion warning later (GH-9002)
https://github.com/python/cpython/commit/cf21504194927b2f22132f48effea69eb8ade751


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:

Oh wow, I didn't expect that it would be so complicated to "just" get the 
encoding of sys.stdout... I had to fix many bugs to be able to do that!

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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset dfe0dc74536dfb6f331131d9b2b49557675bb6b7 by Victor Stinner in 
branch 'master':
bpo-34485: Add _PyCoreConfig.stdio_encoding (GH-8881)
https://github.com/python/cpython/commit/dfe0dc74536dfb6f331131d9b2b49557675bb6b7


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 177d921c8c03d30daa32994362023f777624b10d by Victor Stinner in 
branch 'master':
bpo-34485, Windows: LC_CTYPE set to user preference (GH-8988)
https://github.com/python/cpython/commit/177d921c8c03d30daa32994362023f777624b10d


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 0b9ea4b211b24464c7d38f63e45e51c275c52dcd by Victor Stinner in 
branch '3.7':
[3.7] bpo-34485: stdout uses surrogateescape on POSIX locale (GH-8986) (GH-8987)
https://github.com/python/cpython/commit/0b9ea4b211b24464c7d38f63e45e51c275c52dcd


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 315877dc361d554bec34b4b62c270479ad36a1be by Victor Stinner in 
branch 'master':
bpo-34485: stdout uses surrogateescape on POSIX locale (GH-8986)
https://github.com/python/cpython/commit/315877dc361d554bec34b4b62c270479ad36a1be


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 124b9eb4e41ba1676dad954eec9a1fb3480794e4 by Victor Stinner in 
branch 'master':
bpo-34485: Add _Py_ClearStandardStreamEncoding() (GH-8982)
https://github.com/python/cpython/commit/124b9eb4e41ba1676dad954eec9a1fb3480794e4


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 98c49c6ab239875e35a3c271bc8fabde6c9be804 by Victor Stinner in 
branch '3.7':
bpo-34485: Fix _Py_InitializeCore() for C locale coercion (GH-8979) (GH-8981)
https://github.com/python/cpython/commit/98c49c6ab239875e35a3c271bc8fabde6c9be804


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 2c8ddcf4f14f3e4c87a6fe6678ab5ad09130c6ab by Victor Stinner in 
branch 'master':
bpo-34485: Fix _Py_InitializeCore() for C locale coercion (GH-8979)
https://github.com/python/cpython/commit/2c8ddcf4f14f3e4c87a6fe6678ab5ad09130c6ab


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

STINNER Victor  added the comment:


New changeset 9e4994d410970fb4e75168401d159ba47a8f7108 by Victor Stinner in 
branch 'master':
bpo-34485: Enhance init_sys_streams() (GH-8978)
https://github.com/python/cpython/commit/9e4994d410970fb4e75168401d159ba47a8f7108


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

Change by STINNER Victor :


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[issue34485] _PyCoreConfig: add stdio_encoding and stdio_errors

[STINNER Victor]

New submission from STINNER Victor :

Currently, the code to select the encoding and error handler of sys.stdin, 
sys.stdout and sys.stderr is run later in Py_Initialize(). I propose to move 
most of this code into _PyCoreConfig_Read() and add stdio_encoding and 
stdio_errors to _PyCoreConfig to easily let Python embedders to select the 
encoding.

Attached PR implements this idea. During Py_Initialize(), the code still reads 
the LC_CTYPE locale to choose the error handler if stdio_errors is NULL. This 
check cannot be done earlier, since the LC_CTYPE locale is only set to the user 
locale in Py_Initialize(): after _PyCoreConfig_Read().

The Py_SetStandardStreamEncoding() function has been added by Nick Coghlan in 
bpo-16129.

This new pre-initialization API allows embedding
applications like Blender to force a particular
encoding and error handler for the standard IO streams.

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messages: 323980
nosy: vstinner
priority: normal
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title: _PyCoreConfig: add stdio_encoding and stdio_errors
versions: Python 3.8

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