static
 PRInt32 strip_chars( PRUnichar* s, PRUint32 max, const char* set )
   {
     return StripChars2(s, max, set);
   }
 static
 int32_t strip_chars( char16_t* s, uint32_t max, const char* set )
 {
     return StripChars2(s, max, set);
 }