PREDEFINES macro expansion without spaces

Hi,

I define a macro like

  "FOO(x)=virtual ~x();"

to be able to create an empty virtual destructor of a C++ class. However,
the expanded text of

  FOO(bar)

is

  ~  bar  ();

Doxygen adds spaces before and after macro arguments which is not appreciate
in cases like this because "~  bar" is not considered a destructor (at least
not from Doxygen itself).

Is there some reason to suppress adding these spaces?

I'm using Doxygen 1.8.12.

Thanks,

Frank

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