[Docutils-users] I/O uses default encoding argument

[Adam T. <aat...@ou...>]

Using Python 3.10's ``-X warn_default_encoding`` argument to Python, we can see a large number of places where the default encoding is used. On posix systems this is now UTF-8 following PEP 538 [1], but on Windows a non-unicode codepage can be used.

The attached patch fixes the majority of these instances.

A

[1]: https://peps.python.org/pep-0538/