alignment-extra-space, lyrics

[Nicolas Sceaux]

Hi,

The result of setting alignment-extra-space to add space between staves
in a given system is not satisfying when there are lyrics:

/=======
|=======
|lyrics
|=======
\=======

-->

/=======
|        } space
|=======
|        } space
|lyrics
|        } space
|=======
|        } space
\=======

That is, the gap between the lyrics and the corresponding staff is
too big.

Is there way not to lengthen the space between a staff and its lyrics?
(I mean: a hint about how that could be hacked)

nicolas