[fpc-pascal] TStringHelper with SysUtils functions

[silvioprog]

Hello,

How do I use the TStringHelper with SysUtils functions?

When I've tried to compile this code:

=== code ===

program Project1;

{$mode objfpc}{$H+}

uses
  SysUtils;

begin
  WriteLn(ExtractFileExt(ParamStr(0)).Substring(1));
  ReadLn;
end.

=== /code ===

I've got:

project1.lpr(9,39) Error: Illegal qualifier

A possible fix would be changing the TStringHelper declaration from
"TStringHelper = Type Helper for AnsiString" to "TStringHelper = Type
Helper for string" keeping it Delphi compatible.

Thank you!

--
Silvio Clécio
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