Thank you for your input, Yoshi! I'm still trying to wrap my head on
Lilypond's massive tweaks and customizations... I thought markup's IF could
work but I've been stuck in trying to understand what to write code, since
I'm not that good at Lilypond's internals.
Still, thanks!
Em sáb., 15 de mar. de 2025 às 10:54, Yoshiaki Onishi <i...@yoshionishi.com>
escreveu:
> > Hello. I'm writing a book and after my ToC I need a blank page ("this
> page is left blank purposefully") only if this blank page would have an odd
> page number. If it falls under an even page number it must not be printed.
> I've looked in the manual and didn't find an answer... any help would be
> appreciated.
> >
> > %%MWE starts here
> > \version "2.25.20"
> > \book {
> > \markup "First page with nice graphics."
> > \pageBreak
> > \markup "Second page with a ToC that we can't know for sure how big it
> will be."
> > \pageBreak
> > \markup "Conditional page that is only printed if it's page number is
> odd."
> > } % end of book
> > %%MWE ends here
>
> Dear Lucas,
>
> I spent a little bit of time trying to strategize how this could be
> accomplished, and I have gathered that:
>
> 1. oddHeaderMarkup (or its footer counterpart) in the \paper column won’t
> be helpful here because you are trying to have the “blank page” notice on
> an odd page only at your command
> 2. Because of 1., I thought about creating define-markup-command to create
> a scheme function that:
> a. Upon placing a \label on the said (possibly odd-numbered) page in
> question,
> b. The said scheme function will use \page-ref function (
> https://lilypond.org/doc/v2.25/Documentation/notation/reference-to-page-numbers)
> and if the page number is determined odd (if (odd? (…))),
> c. You have the “blank page” message show up.
> 3. Place the markup with the custom function in your score.
>
> But with my normal work as of late, time ran out before I could implement
> it. So I can’t really help much here aside from possibly suggesting above.
>
> I know it may not be ideal, but I suppose a bit easier (but more
> labor-intensive) way is to create the TOC once the rest of the book is
> done, then manually add the “blank page” message as necessary.
>
> Sorry I can’t be much of help here…curious what others might come up with,
> though.
>
> Regards,
> Yoshi
>
>
