Eryk Sun <eryk...@gmail.com> added the comment:
> PS> [System.Console]::OutputEncoding
The console's current output encoding is irrelevant to this problem.
In Windows, pydoc uses the old "more.com" pager with a temporary file that's
encoded with the default encoding, which is the process active codepage (i.e.
"ansi" or "mbcs"), unless UTF-8 mode is enabled. The "more.com" utility,
however, decodes the file using the console's current input codepage from
GetConsoleCP(), and then it writes the decoded text via wide-character
WriteConsoleW().
The only supported way to query the latter in the standard library is via
os.device_encoding(0), and that's only if stdin isn't redirected to a file or
pipe. Alternatively, ctypes can be used via
ctypes.WinDLL('kernel32').GetConsoleCP(). For the latter, we would need to add
_winapi.GetConsoleCP(), since using ctypes is discouraged.
----------
nosy: +eryksun
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<https://bugs.python.org/issue44275>
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