std.file and non-English filename in Windows

[Patrick Schluter]

On Sunday, 31 December 2017 at 18:21:29 UTC, Domain wrote:
> In Windows, exists, rename, copy will report file not exists 
> when you input non-English filename, such as Chinese 中文.txt

It's unclear what your problem is but here a wild guess.

Windows API's for Unicode use UTF-16 as far as I know. Strings in 
D are utf-8. So before calling win32 API function, they have to 
be transformed to wstring i.e. utf-16 strings.