Question about Scheme's syntax

[Paolo Prete]

Hello,

Given:

floating-markup = #(define-scheme-function (parser location x y obj)
(number? number? scheme?)
                                  #{
                                    \markup \with-dimensions #'(0 . 0) #'(0
. 0){
                                      \override #'(baseline-skip . 0)
                                      \translate #(cons x y)
                                      #obj
                                    }
                                  #})

I can invoke it with:

\floating-markup 15 -60 "some string"

But how can I pass to the same function the following expression: { \circle
5 } as #obj?

Something like (pseudo-syntax) :

\floating-markup 15 -60 #{ \circle 5 #}

...


Thanks!