anchor.diff:  ********************************************************************************
   
   FLRE - Fast Light Regular Expressions - A fast light regular expression library
  -Copyright (C) 2015-2016, Benjamin 'BeRo' Rosseaux
  +Copyright (C) 2015-2017, Benjamin 'BeRo' Rosseaux
   
   The source code of the FLRE engine library and helper tools are
   distributed under the Library GNU Lesser General Public License Version 2.1 
  
positive.code:            raise EFLRE.Create('Syntax error');
            end;
           end;
           else begin
            if (rfUTF8 in Flags) and (byte(TFLRERawByteChar(Source[SourcePosition]))>=$80) then begin
             UnicodeChar:=UTF8CodeUnitGetCharAndIncFallback(Source,SourcePosition);
  
negative.code:         end;
         end else begin
          raise EFLRE.Create('Syntax error');
         end;
        end;
        '[':begin
  