I suggested intersection format for the code generator part.

Also, there is a huge amount of legacy code flying around. Write the fixed form parser as soon as you can.

An example of legacy code with linenumbers is: (Extracted from real code, I only changed the variable names.)

        do 1 i = 1 , n
        do 1 j = 1 , n
          if(x(i,j).ne.y(I,j)) print*,x(i,j),y(j,i)
      1 continue