Re: bookTitleMarkup and tocItem cause empty page

[Simon Albrecht]

Hi Jean,

On 01/06/2022 22:41, Jean Abou Samra wrote:

As said on the ticket, you need to move \tocItem inside
the second bookpart,



thanks for looking into it and opening the issue. The workaround is 
inconvenient, because I want to have the \bookpart{} statement in an 
include file for use in different contexts, but I guess I’ll have to 
make it work for now.


Best, Simon

Re: bookTitleMarkup and tocItem cause empty page

[Jean Abou Samra]

Le 01/06/2022 à 21:12, Simon Albrecht a écrit :

Hi Jean,

On 01/06/2022 15:24, Jean Abou Samra wrote:


Please give an example.



I’ve gone debugging, and it’s a weird combination of two things that 
causes the empty page:


%%%
\version "2.23.9"

\paper {
  bookTitleMarkup = \markup {
    \vspace #.3
  }
}

\bookpart { \markup { 1 } }

\tocItem \markup "toc2"
\bookpart { \markup { 2 } }
%

I don’t understand… in my real-world book, the empty pages were empty, 
now in this tiny example the second bookpart appears to get 
duplicated, and this only because the bookTitleMarkup contains 
_anything_ other than empty \fromproperty calls. Even \markup\null as 
bookTitleMarkup has the bug (?) occurring.




OK, opened https://gitlab.com/lilypond/lilypond/-/issues/6358
about that. The thing is, \tocItem works by inserting a label
at the point it is being used. Since the label is a standalone
object between two bookparts, it is being made a bookpart
of its own! Without a title, that bookpart has no pages, but
if you have a title, it becomes visible ...

As said on the ticket, you need to move \tocItem inside
the second bookpart, like this:

\version "2.23.9"

\paper {
  bookTitleMarkup = \markup {
    \vspace #.3
  }
}

\bookpart { \markup { 1 } }

\bookpart {
  \tocItem \markup "toc2"
  \markup { 2 }
}


Best,
Jean

bookTitleMarkup and tocItem cause empty page

[Simon Albrecht]

Hi Jean,

On 01/06/2022 15:24, Jean Abou Samra wrote:


Please give an example.



I’ve gone debugging, and it’s a weird combination of two things that 
causes the empty page:


%%%
\version "2.23.9"

\paper {
  bookTitleMarkup = \markup {
    \vspace #.3
  }
}

\bookpart { \markup { 1 } }

\tocItem \markup "toc2"
\bookpart { \markup { 2 } }
%

I don’t understand… in my real-world book, the empty pages were empty, 
now in this tiny example the second bookpart appears to get duplicated, 
and this only because the bookTitleMarkup contains _anything_ other than 
empty \fromproperty calls. Even \markup\null as bookTitleMarkup has the 
bug (?) occurring.


Best, Simon