Best approach to handle accented letters

[Marc Schütz via Digitalmars-d-learn]

On Friday, 28 October 2016 at 11:24:28 UTC, Alfred Newman wrote:
> Hello,
>
> I'm getting some troubles to replace the accented letters in a 
> given string with their unaccented counterparts.
>
> Let's say I have the following input string "très élégant" and 
> I need to create a function to return just "tres elegant". 
> Considering we need to take care about unicode chars, what is 
> the best way to write a D code to handle that ?
>
> Cheers

import std.stdio;
import std.algorithm;
import std.uni;
import std.conv;

void main()
{
     auto str = "très élégant";
     immutable accents = unicode.Diacritic;
     auto removed = str
         .normalize!NFD
         .filter!(c => !accents[c])
         .to!string;
     writeln(removed);  // prints "tres elegant"
}

This first decomposes all characters into base and diacritic, and 
then removes the latter.