Hello,,
I am developing a console program which receives input in UTF-8, but it is converted to WideString for communication with COM. I found a weird behaviour of the WideStringReplace, and I extracted the small program below:
program a;
{$apptype console}

uses SysUtils;
var
   U: UTF8String;
   W: WideString;
begin
   U := 'left[*]paren';
   W := WideStringReplace(WideString(U), WideString('[*]'), WideString('
'), [rfReplaceAll]);
   writeln(W);
end.

It seems to me that the output is garbaged, and it is not a problem of writeln, because I also obtained the weird result which was sent to SAPI.

Sorry I forgot the FPC version:
3.1.1 [2017/02/15] for i386
Dňa 28. 3. 2017 o 11:22 Lubos Pintes napísal(a):