Re: opus conflict

[Timothy Lanfear]

On 29/04/17 23:34, Mark Stephen Mrotek wrote:
> Hello,
>
> In my \book \header I have fields of title, composer, and opus.
>
> The manual (2.18) states “The values of the fields filter down this 
> hierarchy, with the values set higher in the hierarchy persisting 
> unless they are over-ridden by a value set lower in the hierarchy…” 
> This is understand. So for the subsequent scores I insert title = ##f 
> and composer = ##f. The title and composer fields in the scores are 
> overridden.
>
> Now the conflict, when I insert opus = ##f in the score(s) the field 
> is overridden in the \book level (higher?) and is no longer printed 
> below the “composer.”

I find the best way to handle having the opus printed once only on the 
first piece of a book is to redefine bookTitleMarkup and 
scoreTitleMarkup, moving the opus field to the bookTitleMarkup

\version "2.19.59"

% Move the opus markup from the score title to the
% book title so it isn't repeated for every score.
% Adapted from ly/titling-init.ly

bookopus = \paper {
  bookTitleMarkup = \markup {
    \override #'(baseline-skip . 3.5)
    \column {
      \fill-line { \fromproperty #'header:dedication }
      \override #'(baseline-skip . 3.5)
      \column {
        \fill-line {
          \huge \larger \larger \bold
          \fromproperty #'header:title
        }
        \fill-line {
          \large \bold
          \fromproperty #'header:subtitle
        }
        \fill-line {
          \smaller \bold
          \fromproperty #'header:subsubtitle
        }
        \fill-line {
          \fromproperty #'header:poet
          { \large \bold \fromproperty #'header:instrument }
          \fromproperty #'header:composer
        }
      }
      \override #'(baseline-skip . 2.0)
      \column {
        \null
        \fill-line {
          \null
          \fromproperty #'header:opus
        }
        \fill-line {
          \fromproperty #'header:meter
          \fromproperty #'header:arranger
        }
      }
    }
  }

  scoreTitleMarkup = \markup {
    \column {
      \fill-line {
        \fromproperty #'header:piece
        \null
      }
    }
  }
}

\bookopus

\book {
  \header { title="Title" composer="Composer" opus="opus" }
  \score { c''1 }
  \score { d''1 }
}


--
Timothy Lanfear, Bristol, UK.