Hi @jkunimune,
the problem is it.fill, which is a repeat element and takes the full space. You can restrict it with box(width: 1fr, it.fill) to the available space on the line.
#outline(title: [Default Contents])
#show outline.entry: it => link(
it.element.location(),
it.indented(
it.prefix(),
it.body() + sym.space + box(width: 1fr, it.fill) + sym.space + sym.wj + it.page()
),
)
#outline(title: [Imitated Contents])
= a really really really long loooooooooooooooooooooooooooooooooong maaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaanaa
I added sym.wj to prevent the page number from standing alone in a newline.