is there a way to output formatted text following the locale settings ?

[Paul Backus]

On Tuesday, 25 May 2021 at 22:37:25 UTC, someone wrote:
>    writeln(format("%`d", intAmount)); /// please, note the 
> backtick instead of ,
>

 From [the documentation of `formattedWrite`][1]:

> Separator
>
>    Inserts the separator symbols ',' every X digits, from right 
> to left, into numeric values to increase readability. The 
> fractional part of floating point values inserts the separator 
> from left to right. Entering an integer after the ',' allows to 
> specify X. If a '*' is placed after the ',' then X is specified 
> by an additional parameter to the format function. Adding a '?' 
> after the ',' or X specifier allows to specify the separator 
> character as an additional parameter.

So the syntax you want is:

     writeln(format("%,?d", '`', intAmount));

[1]: 
https://forum.dlang.org/post/vedxtnkolsmdlyfvmhsr@forum.dlang.org