[Issue 23508] Unable to build japanese named source files

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23508

--- Comment #4 from Marcelo Silva Nascimento Mancini <msnmancini at hotmail.com> ---
This surely is a problem with Windows. I triple checked and both files are
using UTF-8 encoding, ( just check on VS Code ). I feel like this problem is
related to the file opening API.

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