std.file and non-English filename in Windows

[John Chapman]

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

Works for me. I created a file with the name "中文.txt" and 
std.file.exists returned true.

Is your D source file saved in ASCII by any chance? Try saving it 
with a different encoding, such as UTF8.