compressFullBarRests question (see picture in annex)

[Nick Alderweireldt]

This is my first day lilypond-frescobaldi. I am really impressed by the features.

Please have a look to the picture in annex.
Left is what is engraved using :

\compressFullBarRests

R1*4

Right is a scan of a part of a score sheet showing the same 4 full rests.
The bar with 4 above is longer.
What do I need to change to the code to obtain the same as right on the picture ?

Thanks

Nick

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