FindC returns incorrect results with Unicode 200E, 200F

Hi,

it seems that the TDesC::FindC() method does not work correctly when 
Unicode left-to-right and right-to-left marks are present in a string, 
while TDesC::Find() works fine. I noticed the following with Symbian 
8.0a, both in the SDK as well as on a phone:

     TUint16 string[] = {0x200E,0x200F,'x',0};
     TBuf<40> b = TPtrC(string);
     TInt pos = b.FindC(_L("x")); // returns 0
     TInt pos2 = b.Find(_L("x")); // returns 2

Apparently the LTR/RTL marks are not counted as "string" characters 
during Collate normalization (haven't tried Folding). This behaviour 
appears to be at least counter-intuitive to me...