Convert Hi-Ansi chars to Ascii equivalent (é -> e)

Question

Is there a routine available in Delphi 2007 to convert the characters in the high range of the ANSI table (>127) to their equivalent ones in pure ASCII (<=127) according

Answer 1

Just to extend Craig's answer for Delphi 2009:

If you use Delphi 2009 and newer, you can use a more readable code with the same result:

function OStripAccents(const aStr: String): String;
type
  USASCIIString = type AnsiString(20127);//20127 = us ascii
begin
  Result := String(USASCIIString(aStr));
end;

Unfortunately, this code does work only on MS Windows. On Mac, the accents are not replaced by best-fitted characters but by question marks.

Obviously, Delphi internally uses WideCharToMultiByte on Windows whereas on Mac iconv is used (see LocaleCharsFromUnicode in System.pas). The question is if this different behaviour on different OS should be considered as bug and reported to CodeCentral.