···191191 in
192192 Option.value ~default: short_title @@
193193 match frontmatter.designated_parent with
194194- | Some parent_iri when not (scope = frontmatter.designated_parent) ->
194194+ | Some parent_iri when not (Option.equal Iri.equal scope frontmatter.designated_parent) ->
195195 let@ parent = Option.map @~ get_article parent_iri forest in
196196 let parent_title = get_expanded_title parent.frontmatter forest in
197197 let parent_link = T.Link {href = parent_iri; content = parent_title} in