fix prepend on current index, also format

src/notebook.cc

@@ -194,41 +194,43 @@ void Notebook::open(const boost::filesystem::path &file_path_, size_t notebook_i
         status_branch.set_text("");
     }
   };
-  source_views.back()->update_tab_label=[this](Source::View *view) {
+  source_views.back()->update_tab_label = [this](Source::View *view) {
-    const auto update_label = [&](size_t index, const std::string &prepend){
+    const auto update_label = [&](size_t index, const std::string &prepend) {
       const auto current_view = source_views[index];
-      auto title = prepend+current_view->file_path.filename().string();
+      auto title = prepend + current_view->file_path.filename().string();
-      if(current_view->get_buffer()->get_modified())
+      if (current_view->get_buffer()->get_modified())
-        title+='*';
+        title += '*';
       else
-        title+=' ';
+        title += ' ';
-      auto &tab_label=tab_labels.at(index);
+      auto &tab_label = tab_labels.at(index);
       tab_label->label.set_text(title);
       tab_label->set_tooltip_text(filesystem::get_short_path(current_view->file_path).string());
     };
-    const auto file_name=view->file_path.filename();
+    const auto file_name = view->file_path.filename();
     std::string prepend_current_view;
-    for(size_t c=0;c<size();++c) {
+    size_t current_view_index = 0;
-      if(source_views[c]==view) {
+    for (size_t c = 0; c < size(); ++c) {
-        update_label(c, prepend_current_view);
+      if (source_views[c] == view) {
+        current_view_index = c;
         continue;
       }
       if (source_views[c]->file_path.filename() == file_name) {
-        int diff=0;
+        int diff = 0;
-        const auto parent_path1=view->file_path.parent_path();
+        const auto parent_path1 = view->file_path.parent_path();
-        const auto parent_path2=source_views[c]->file_path.parent_path();
+        const auto parent_path2 = source_views[c]->file_path.parent_path();
-        auto it1=parent_path1.rbegin();
+        auto it1 = parent_path1.rbegin();
-        auto it2=parent_path2.rbegin();
+        auto it2 = parent_path2.rbegin();
         while (it1 != parent_path1.rend() && it2 != parent_path2.rend() && *it1 == *it2) {
-                  ++it1;
+          ++it1;
-                  ++it2;
+          ++it2;
-                  ++diff;
+          ++diff;
         }
-        if(prepend_current_view.empty())
+        if (prepend_current_view.empty())
-          prepend_current_view=it1->string()+(diff>0?"/.../":"/");
+          prepend_current_view = it1->string() + (diff > 0 ? "/.../" : "/");
-        update_label(c, it2->string()+(diff>0?"/.../":"/"));
+        update_label(c, it2->string() + (diff > 0 ? "/.../" : "/"));
       }
     }
+    update_label(current_view_index, prepend_current_view);
     update_status(view);
   };
   source_views.back()->update_status_diagnostics=[this](Source::View* view) {