Indenting over multiple #ifdef blocks

[Migelo]

Hi!

I have a question about how fprettify handles indentation over multiple #ifdef blocks. Here is a code snippet formatted with.
$ fprettify --whitespace-comma --enable-decl -i 4 debug.f90

program hello
    implicit none
    integer :: i, j, k
    print *, "Hello, World!"

#ifdef THREEDSIM
    do k = 1, 2
        print *, "Hello, World!"
#elif defined(TWODSIM)
        do j = 1, 2
            print *, "Hello, World!"
#else
            do i = 1, 2
                print *, "Hello, World!"
#endif
#ifdef THREEDSIM
            end do
#elif defined(TWODSIM)
        end do
#else
    end do
#endif

end program hello

You can see that subsequent do loops get indented every time, even though neither THREEDSIM nor TWODSIM are defined.

Is there a flag (I tried most of them and failed) that would result in code like this?

program hello
   implicit none
   integer :: i, j, k
   print *, "Hello, World!"

#ifdef THREEDSIM
   do k = 1, 2
      print *, "Hello, World!"
#elif defined(TWODSIM)
   do j = 1, 2
      print *, "Hello, World!"
#else
   do i = 1, 2
      print *, "Hello, World!"
#endif
#ifdef THREEDSIM
   end do
#elif defined(TWODSIM)
   end do
#else
   end do
#endif

end program hello

If not, please point me to the place in fprettify where I should start looking to make this way of formatting code possible.
Thank you!

[dbroemmel]

This has been open for quite some time, let me add my 2ct nevertheless:

Since fprettify supports fypp, you could go along those lines to investigate adding support. But after a quick test, I don't think it would do what you're looking for with fypp macros either.
I'm not quite sure whether fprettify could do this in the first place, since it works line by line and doesn't really interpret the code, let alone preprocessor directives. For that to work, it would need to track the different branches of the #if's to be aware of a 'state', I guess? So I don't think this is possible.

You'd have to format those parts yourself and tell fprettify to leave them alone by adding a !& at the end of the line (or creating a block to be skipped).