Added slight delay on tag-similar-tokens so that scrolling up/down with arrowkeys is more smooth.

src/source.cc

@@ -1340,8 +1340,12 @@ Source::ClangViewAutocomplete(file_path, project_path) {
   
   get_buffer()->signal_mark_set().connect([this](const Gtk::TextBuffer::iterator& iterator, const Glib::RefPtr<Gtk::TextBuffer::Mark>& mark){
     if(mark->get_name()=="insert") {
-      auto usr=get_token();
+      delayed_tag_similar_tokens_connection.disconnect();
-      tag_similar_tokens(usr);
+      delayed_tag_similar_tokens_connection=Glib::signal_timeout().connect([this]() {
+        auto usr=get_token();
+        tag_similar_tokens(usr);
+        return false;
+      }, 100);
     }
   });
   

src/source.h

@@ -177,6 +177,7 @@ namespace Source {
   private:
     Glib::RefPtr<Gtk::TextTag> similar_tokens_tag;
     std::string last_similar_tokens_tagged;
+    sigc::connection delayed_tag_similar_tokens_connection;
     std::unique_ptr<SelectionDialog> selection_dialog;
     bool renaming=false;
   };