Function boxworks::tex::build_horizontal_lists

pub fn build_horizontal_lists(
    tex_engine: &dyn TexEngine,
    contents: &mut dyn Iterator<Item = &String>,
) -> (HashMap<String, u32>, Vec<HList>)

Build a horizontal list from some text.

This function works by putting the text inside a TeX \hbox{}, and then instructing TeX to describe the contents of the box.

This function is the inverse of TeX.2021.173 and onwards (part 12 of TeX: displaying boxes).