Re: Problem with Repeats and Alternatives

[Carl Sorensen]

On Wed, Apr 20, 2022 at 8:21 PM John Helly <hellyj@ucsd.edu> wrote:

Aloha.

I've not used LP for a while but in coming back to it I've been struggling with repeats and find that this 'preferred syntax' does not seem to work in that it produces:

Starting lilypond 2.20.0 [test2.ly]...

Processing `/Volumes/Pegasus32R6/Music-100/Music-Lilypond/Songs/Our-Shangri-La/test2.ly'

Parsing...

/Volumes/Pegasus32R6/Music-100/Music-Lilypond/Songs/Our-Shangri-La/test2.ly:6:10: error: syntax error, unexpected \alternative

...

\version "2.20.0"
{
\fixed c'' {
       \repeat volta 6 {
         c4 d e f
         \alternative {
           \volta 1,2,3 { c2 e }
           \volta 4,5 { f2 d }
           \volta 6 { e2 f }
} }
c1 }
}

The error messages indicate that \volta is an "unknown escaped string", so it's not correct.

I think you misunderstand how volta labeling works in 2.20.  Here's code that works for me[1]:

\version "2.20.0"
{
\fixed c'' {
       \repeat volta 6 {
         c4 d e f}
         \alternative {
          { \set Score.repeatCommands = #'((volta "1. 2. 3.")) c2 e  }
          {  \set Score.repeatCommands = #'((volta #f) (volta "4. 5.") end-repeat) f2 d }
           { e2 f }
         }
c1 }
}

HTH,

Carl

 

1. https://lilypond.org/doc/v2.20/Documentation/notation/long-repeats#manual-repeat-marks