Re: still a cue problem

[Mats Bengtsson]

The shift of the rest is not due to the empty group but because
of the \voiceOne and \voiceTwo that are applied to the first and
second voice of the << {...} \\ {...} >> construct.
Among others, the \voiceOne macro does
\override MultiMeasureRest #'staff-position = #4

So, it's not only a matter of ignoring the empty group, it's
also a matter of applying different property settings to another
Voice. However, if you are happy with the default centered rest
position also in the parts with cue notes, then you could do
<< {\revert MultiMeasureRest #'staff-position R1 } \\
   {possible cue notes }>>

   /Mats

Werner LEMBERG wrote:
> I'm quite successfully using \quote, and in parts it works fine.
> There is still a problem with full scores.
>
> Assume that the file `trumpet.ily' is included both by `trumpet.ly'
> (to create the trumpet part) and `score.ly' (to create the full
> score).  To produce a cue I have this code in trumpet.ily:
>
>   << { R1                      } \\
>      { \small \quote "flute" 1 } >>
>
> This works fine in trumpet.ly since the both the first and the second
> block contains data.  In `score.ly', only the upper block is used
> because \quote intentionally expands to nothing by saying
>
>    \set Score.quotedEventTypes = #'()
>
> at the top of `score.ly'.  Consequently, the code is equivalent to
>
>   << { R1 } \\
>      {    } >>
>
> As you can see, the second group is empty.  Lilypond accepts that, but
> it doesn't completely ignore the empty group: It shifts the whole rest
> up.  To get correctly positioned whole rests I currently have to do
> this:
>
>   \tag #'score { R1 }
>   \tag #'trumpet << { R1                      } \\
>                     { \small \quote "flute" 1 } >>
>
> (and applying the tags accordingly), but this is really ugly IMHO and
> a lot of additional work.
>
> Is it possible to make lilypond really ignore an empty group, without
> any side effects?  Perhaps \quote can expand to an object which says
> `Please ignore me completely'.  Or am I missing something?
>
>
>     Werner
>
>
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--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
        Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================