Re: Spacing grobs with an invisible object between them (hack)

[Aaron Hill]

On 2020-02-06 8:35 am, Paolo Prete wrote:
> I ask you if is it possible to remove the noisy default  #OSSPW param 
> as
> well, in the function call.

Default arguments cannot be in the final position, which is why you have 
to specify the value.

Consider whether you can reorder arguments or add an extra argument to 
ensure a non-optional final parameter.

Another option would be to accept height and width in the same argument 
using a custom type predicate:

%%%%
\version "2.19.83"

#(define (number-or-number-pair? x) (or (number? x) (number-pair? x)))

foo = #(define-scheme-function (arg) (number-or-number-pair?)
  (let ((width (if (pair? arg) (car arg) 0))
        (height (if (pair? arg) (cdr arg) arg)))
    #{ \markup #(format #f "width=~a, height=~a" width height) #}))

\foo 1
\foo #'(2 . 3)
%%%%


-- Aaron Hill