[4.1.4]: nested indirect function calls diagnosed as error.

[Kaz Kylheku]

Hi!

GNU Awk 4.1.4 in Ubuntu 18 diagnoses the indicated line in the following 
snippet.

Does this reproduce in current?

function okay(f1, f2, arg)
{
   return @f1(arg)
}

function not_so_hot(f1, f2, arg)
{
   return @f1(arg, @f2(arg)) # line 8: error here
}

function workaround(f1, f2, arg,
                    tmp)
{
  tmp = @f2(arg)
  return @f1(arg, tmp)
}

The diagnostic is:

gawk: gawkbug.awk:8: error: attempt to use non-function `f1' in function 
call.


Though such nesting isn't described in the manual, it more or less 
reasonably
follows from the composition of expressions, including regular, direct
function calls.

Cheers ...