Method visit_parent_topic

backend/src/bin/show.rs:99–108

(&mut self, topic: &ParentTopic)

    }

    fn visit_parent_topic(&mut self, topic: &ParentTopic) -> Result<()> {
        match &self.git.fetch(self.repo_id, &topic.id) {
            Some(RepoObject::Topic(topic)) => {
                let line = format!("- [{}]({})\n", topic.name(Locale::EN), topic.topic_id());
                self.buf.push_str(&line);
            }
            other => return Err(Error::Repo(format!("expected a topic: {other:?}"))),
        }
        Ok(())
    }

    fn visit_topic_child(&mut self, child: &TopicChild) -> Result<()> {
        match &self.git.fetch(self.repo_id, &child.id) {