Compound time

[Gilles]

Hello.

About the "compound time" trick proposed in
  http://lilypond.org/doc/v2.6/input/test/lily-1299846131.ly

#(define (compound-time grob one two num)
  (interpret-markup
   (ly:grob-layout grob)
   '(((baseline-skip . 2)
      (word-space . 2)
      (font-family . number)))
   (markup
    #:line ( #:column (one num) #:lower 1 "+" #:column (two num)))))


1. Shouldn't the trick be extended to

   #(define (compound-time grob one two three four)
     [etc.]

   to make it possible to have a signature of e.g.: 3/8+2/4 ?

2. When reducing the "Staff" size, the time signature object defined
   with the above hack doesn't follow the change, resulting in the
   number symbols being too big.
   How to modify the code to include a size setting?

3. Will these compound signatures become part of the "user" syntax?
   [Which will ultimately solve the above problem.]


Thanks.
Gilles