--- a/src/html.h	Mon May 19 13:30:18 2025 +0200
+++ b/src/html.h	Mon May 19 13:58:19 2025 +0200
@@ -36,6 +36,8 @@
     void open(bool fragment);
     void close(bool fragment);
 
+    void chart_begin(const std::string& repo, const std::string& author);
+    void chart_end();
     void heading_repo(const std::string& repo);
     void heading_author(const std::string& author, unsigned int total_commits);
     void table_begin(std::chrono::year y, const std::array<unsigned int, 12> &commits_per_month);