Sidebar doesn't add a space character when item is split in two lines

[ericonr]

Hey there! We are using mdBook for the documentation for Void Linux, here: https://docs.voidlinux.org/.

If you look at the sidebar, under graphics drivers, there's a "NVIDIAOptimus" item. This item is specified in SUMMARY.md as:

- [NVIDIA
   Optimus](link.)

It is split in two lines due to our linting, where lines are constrained to 80 columns. The original source can be found in https://raw.githubusercontent.com/void-linux/void-docs/master/src/SUMMARY.md . GitHub formatting, when displaying this file (here), displays it correctly as "NVIDIA Optimus".

This seems to be a bug when creating the sidebar. I haven't noticed anything similar with normal files.

Thanks!

[ericonr]

This seems to be an issue with pulldown-cmark, I think. At least, most of the processing seems to happen in the code below, unless the issue is with how mdbook generates name...

            if !self.no_section_label {
                // Section does not necessarily exist
                if let Some(section) = item.get("section") {
                    out.write("<strong aria-hidden=\"true\">")?;
                    out.write(&section)?;
                    out.write("</strong> ")?;
                }
            }

            if let Some(name) = item.get("name") {
                // Render only inline code blocks

                // filter all events that are not inline code blocks
                let parser = Parser::new(name).filter(|event| match *event {
                    Event::Code(_) | Event::Html(_) | Event::Text(_) => true,
                    _ => false,
                });

                // render markdown to html
                let mut markdown_parsed_name = String::with_capacity(name.len() * 3 / 2);
                html::push_html(&mut markdown_parsed_name, parser);

                // write to the handlebars template
                out.write(&markdown_parsed_name)?;
            }

            if path_exists {
                out.write("</a>")?;
            }

[ericonr]

It is how name is generated! Adding a println!("{}", name); there prints NVIDIAOptimus, so pulldown-cmark is doing the right think with what it gets.