551             let mut underline = None;  in render_snippet_source()  localVariable
558                                 self.label_multi_left(severity, *ls, underline.map(|(s, _)| s))?;  in render_snippet_source()
561                                 self.label_multi_left(severity, *ls, underline.map(|(s, _)| s))?;  in render_snippet_source()
564                                 self.label_multi_left(severity, *ls, underline.map(|(s, _)| s))?;  in render_snippet_source()
567                                 underline = Some((*ls, VerticalBound::Top));  in render_snippet_source()
571                                 underline = Some((*ls, VerticalBound::Bottom));  in render_snippet_source()
575                                 self.inner_gutter_column(severity, underline)?;  in render_snippet_source()
580                     Some((_, _)) | None => self.inner_gutter_column(severity, underline)?,  in render_snippet_source()
784         underline: Option<LabelStyle>,  in label_multi_left()
786         match underline {  in label_multi_left()
909         underline: Option<Underline>,  in inner_gutter_column()
911         match underline {  in inner_gutter_column()