Bookmarks repeat on every page

[arikrupnik]

I'm formatting an XML file. I want to generate an index, but for some reason I'm getting an entry for every section on each page. What am I doing wrong? Using Weasyprint 51 and Python 3.7.5 on Linux.

<doc>
  <section heading="1976">
    <section heading="Cemetery">
      <scene>EXT. CEMETERY -- NIGHT</scene>
      Rederik, now 28, lies behind a GRAVESTONE. He has a beard now, but is growing thinner on the top. He squints through a tree branch he's holding in front of his face.

CSS snippet:

section { bookmark-level: 1; bookmark-label: attr(heading); }
section > section { bookmark-level: 2; }
section > section > section { bookmark-level: 3; }

[Tontyna]

Don't think you're doing anything wrong.

The level-1-section, wrapping everything, is present on every page that WeasyPrint generates -- try to give it a border or background color and you should see that decoration on each page.

Like those 'decorative' stylings, the bookmark-* properties of the section are present on each page, generating the superfluous entries in the PDF navigation.

Looks like WeasyPrint should stop propagating the bookmarks when spreading a wrapping box across pages.

[arikrupnik]

Thank you for your response, @Tontyna. Is there a workaround i can use?

[arikrupnik]

Maybe if I put the bookmark-level on section:before? I haven't been able to make it work, but maybe I'm missing how :before works in this context.

[Tontyna]

Nah, no chance. Though the spec says that the bookmark-* properties apply to all elements, WeasyPrint doesn't apply them.

Only workaround at the moment is inserting (empty) dummy elements.

[arikrupnik]

Thanks.

Only workaround at the moment is inserting (empty) dummy elements.

I thought this was what :before did ;=)

Any sense if this may change in WeasyPrint in the foreseeable future?

[Tontyna]

BTW: Not only multi-page-boxes generate multiple bookmarks. Multi-Line Inline-Boxes do it, too:

<h1 style="display:inline; white-space:pre">
A bookmark
for every
line
</h1>

creates 4 bookmarks in the PDF outline

[arikrupnik]

How about that! I guess no one would ever use more than one line in an <h1> :=)

I can test this commit with my XML this evening when I get home.

[arikrupnik]

Beautiful! This fixes my problem.
Thank you!