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List:       lilypond-user
Subject:    Re: Non-local page-break oddities
From:       "Joel C. Salomon" <joelcsalomon () gmail ! com>
Date:       2023-04-25 15:41:05
Message-ID: 17720dc0-7794-9420-1240-d115b8cb0faf () gmail ! com
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    <p class="moz-cite-prefix">On 4/25/23 01:41, William Rehwinkel
      wrote:</p>
    <blockquote type="cite"
      cite="mid:962a1e84-f24c-16f3-e671-ff5d3245b9dd@williamrehwinkel.net">
      <p> I think that using multiple bookparts is a perfect strategy
        for this document based on this example, in which each score
        should nicely start on a new page. </p>
      <p> Without any minimal examples, it is hard to determine what
        exactly is causing the bad page-breaking results, maybe you are
        using the optimal-page-turn algorithm for example. </p>
    </blockquote>
    <p>Thanks for reminding me about the various page break algorithms.
        I’d found that when I last had a chance to work on this project,
      but had not made a note for myself before putting the work away.</p>
    <p class="moz-cite-prefix">On 4/25/23 01:49, Jean Abou Samra wrote:</p>
    <blockquote type="cite"
      cite="mid:cab86c780e7a83ae793fd77665076de7ce87a140.camel@abou-samra.fr">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <p>Le lundi 24 avril 2023 à 23:33 -0400, Joel C. Salomon a écrit :</p>
      <blockquote type="cite">
        <pre><code>\book {
  …
  \pageBreak
  \scoreXXXI
  \scoreXXXII
  \pageBreak
  \scoreXXXIII
  \paper { min-systems-per-page = 2 }
  \scoreXXXIV
}</code></pre>
      </blockquote>
      <p>This doesn't do what you think. In <code>\book</code>, a <code>\paper</code>
        occurring anywhere applies to the <em>entire</em> book, not
        only to the scores that follow it.</p>
    </blockquote>
    <p>Interesting. When I experimented, it did seem as if `<font
        face="monospace">min-systems-per-page = 2</font>` was, in fact,
      only effective for that last score.  Probably some complicated
      consequences of the page-breaking algorithm instead.<br>
    </p>
    <blockquote type="cite"
      cite="mid:cab86c780e7a83ae793fd77665076de7ce87a140.camel@abou-samra.fr">
      <blockquote type="cite">
        <p>(It looks like perhaps using <code>\bookpart</code> around
          chunks of the book might help, but that re-prints the book
          header when I don’t want it to, and I’m not seeing how to
          suppress that.)</p>
      </blockquote>
      <p>Try</p>
      <pre><code>  \bookpart {
    \paper {
      bookTitleMarkup = ##f
    }
    ...
  }</code></pre>
    </blockquote>
    <p>Between both of you, I’ve got</p>
    <pre><code>  \book {
    \paper {
      page-breaking = #ly:optimal-breaking
      max-systems-per-page = 8 min-systems-per-page = 5
    }
    \scoreI
    \bookpart {
      \paper { max-systems-per-page = 9 min-systems-per-page = 7 bookTitleMarkup = #f }
      \header { copyright = #f }
      \scoreII
    }
    \bookpart {
      \paper { bookTitleMarkup = #f }  \header { copyright = #f }
      \scoreIII
    }
    …
  }/code&gt;</code></pre>
    <p>working, with overrides for min/max as needed (as shown).  Thank
      you both!<br>
    </p>
    <p>Is there a way to have</p>
    <pre><code>      \paper { bookTitleMarkup = #f }  \header { copyright = #f }</code></pre>
    <p>be the default for bookparts in my project?  There’s
      bookTitleMarkup and scoreTitleMarkup but no bookpartTitleMarkup
      that I can see.<br>
    </p>
    <p>—Joel</p>
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