String characters not extended

[Nicholas Wilson via Digitalmars-d-learn]

On Monday, 2 January 2017 at 21:07:37 UTC, Ignacious wrote:
> when one prints out a string with some extended(I guess it's 
> unicode), writeln prints out the ascii versions that do not 
> correspond to what they really are. e.g., an umlaut is printed 
> out as 1/2 or something.
>
> how to get it to print the correct codes?

It should Just work. can you paste the source and output?