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List:       lilypond-bug
Subject:    Re: Spacer notes and (de)crescendo
From:       Mats Bengtsson <mats.bengtsson () s3 ! kth ! se>
Date:       2005-11-28 11:44:06
Message-ID: 438AED86.2060104 () s3 ! kth ! se
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The real problem you experienced was that if you start a Staff context
with a << ... >>, then LilyPond will create a new Voice context for
each musical expression within << ... >>, i.e. what you wrote is
equivalent to
\new Staff{
  << \new Voice { c'1 } \new Voice { s2 s2-\> } >> ...


The simple solution is to explicitly instantiate a Voice context
from the beginning of the piece:

\score{
  \new Voice {
    << ...
  }
}

or

\score{
  \new Staff {
    \new Voice {
      << ...
    }
  }
}

   /Mats

Alard de Boer wrote:

>On 25/11/05, Erik Sandberg <erik.sandberg.9195@student.uu.se> wrote:
>  
>
>>On Friday 25 November 2005 16.48, Alard de Boer wrote:
>>    
>>
>>>Hello list,
>>>
>>>When using spacer notes to move the start of a descrescendo,
>>>I found the following:
>>>
>>>\version "2.7.18"
>>>\score {
>>>    \new Staff {
>>>%        s1*0
>>>        << c'1 { s2 s2-\> } >> | c'4-\! r4 r2 |
>>>        << c'1 { s2 s2-\> } >> | c'4-\! r4 r2 |
>>>    }
>>>}
>>>
>>>The first decrescendo is not visible in the output, and there
>>>are warnings (can't find start of (de)crescendo, unterminated
>>>(de)crescendo). The second descrescendo is fine.
>>>      
>>>
>>Try adding a \new Voice, i.e. use:
>>\new Staff \new Voice { ... }
>>    
>>
>
>Thank you, that works, and is a lot "cleaner" than the workaround
>I used (the s1*0).
>
>Incidentally, I re-read the manual to learn more about contexts,
>and found that in 9.1.3 in the bottom example, both staves start
>with an upbeat. In the manual for 2.6 the top staff simply contains
>two 3/4 measures and the bottom one three 2/4 measures, which
>is what I would expect. Bug?
>
>URL:
>http://lilypond.org/doc/v2.7/Documentation/user/out-www/lilypond/Modifying-context-plug_002dins.html
>
>--
>Groeten,
>Alard.
>
>Ceterum censeo MS Word esse delendam.
>
>
>_______________________________________________
>bug-lilypond mailing list
>bug-lilypond@gnu.org
>http://lists.gnu.org/mailman/listinfo/bug-lilypond
>  
>

-- 
=============================================
	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: mats.bengtsson@s3.kth.se
	WWW: http://www.s3.kth.se/~mabe
=============================================




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