fn ancestor_links(
text: &Measured<'_>,
page: &Page<'_>,
cell: &Laid,
at: Placed,
) -> Vec<(Rect, usize, String)>Expand description
A link over each ancestor segment of cell’s path, aimed at that
ancestor’s page. The last segment names this page and gets none; a segment
the line had no room for was dropped, and its link with it.