Partial and empty measures in a score

[Francesco Spiga]

I'm editing a three-part fugue, and I'm typing notes in three separate
files. The first voice starts with a partial measure, so the two first
maesures are:



 \partial8*7 g'8 bes g a a c bes16 a
 bes8 ees ees ees a, d d d



The second voice enters at measure 2. As the first measure has to be
empty in separate part, I typed:



 R1
 r4 g'2 f4



When I try to put all voices in a score, Lilypond does'nt recognise the
first (partial) measure of the first voice as the empty one of the
second voice, so alignment between staves is completely wrong.

How could I work out this problem?

Thanks you.
        Franek