Feat req: Trim whitespaces between characters

[gnikit]

Extremely poorly written code often does not have a consistent styling between statements. As it currently stands findent will not try and fix that. I am curious if this is a useful feature for findent to have

MWE

program main

   implicit none

   real    ::    b(3,3)
   integer   ::   j,   k

   b    =    foo(     10 )

   write      (*, '(*(g0))')   (   (  b  (j, k) , ' ', k  =  1 , 3 ), new_line('A'), j  =  1, 3)

contains

   function                  foo  ( var   )    result( res )
      integer       , intent(    in   )           ::            var
      real,  dimension( 3 , 3 )       ::  res


      integer   :: i

      res( : , 1  )  =   [  0, 1 ,  2   ]
      res( : , 2  )  =   (/  4 , 5, 6  /)
      call        random_number (   res( :, 3  )   )

      if     (  any   ( res( :, 3)  >  0.5 ) )    then
         do     i    =  3  ,   1  ,   -  1
            res( i  ,  3) = -i
         end    do
      end if

      print   *  ,  'nightmare fuel'

   end         function   foo

end   program main

Formatted

A formatted version of that should roughly look something like this (this preserves the number of lines)

program main

   implicit none

   real :: b(3, 3)
   integer :: j, k

   b = foo(10)

   write (*, '(*(g0))') ((b(j, k), ' ', k=1, 3), new_line('A'), j=1, 3)

contains

   function foo(var) result(res)
      integer, intent(in) :: var
      real, dimension(3, 3) :: res


      integer   :: i

      res(:, 1) = [0, 1, 2]
      res(:, 2) = (/4, 5, 6/)
      call random_number(res(:, 3))

      if (any(res(:, 3) > 0.5)) then
         do i = 3, 1, -1
            res(i, 3) = -i
         end do
      end if

      print *, 'nightmare fuel'

   end function foo

end program main

This issue goes into styling preferences, which are highly subjective, and to the best of my knowledge are not really standardised in Fortran. But I would argue that having the option to impose a consistent styling across a file is better than not.

More than happy to work on this.