How to get Timing.measureLength from within Scheme?

[Alberto Simões]

Hello

I am trying to save Timing.measureLength in a little music function, but 
I am unable to find examples in the web of how to get that value (only 
how to set).

My try (ok, most of the code was suggested by Jan-Peter), is something like:

partialInline = #(define-music-function (parser location nom den
mus)(integer? integer? ly:music?)
  #{
    #(def tmp (get Timing.measureLength))
    $mus
    \set Timing.measureLength = tmp
#})


but, how to write the (get ..) portion?

Thanks
Alberto

--
Alberto Simoes
CEHUM