Uncrustify: Where do the options work?

Spaces for operator

{
   bool operator()(T1 const t1, T2 const t2)
   {
      ...
   }
   unc_text operator =()
   {
      ...
   }
}

Register

sp_after_operator Add or remove space between 'operator' and operator sign.
sp_after_operator_sym Add or remove space between the operator symbol and the open paren, as in 'operator ++('.
sp_after_operator_sym_empty Add or remove space between the operator symbol and the open paren when the operator
has no arguments, as in 'operator *()'.
Have precedence of sp_after_operator_sym.