Two or more menu actions can now have the same keybinding

src/menu.cpp

@@ -1,5 +1,6 @@
 #include "menu.hpp"
 #include "config.hpp"
+#include "terminal.hpp"
 #include <iostream>
 #include <string>
 
@@ -578,14 +579,33 @@ void Menu::add_action(const std::string &name, const std::function<void()> &acti
 void Menu::set_keys() {
   auto application = Glib::RefPtr<Gtk::Application>::cast_dynamic(Gtk::Application::get_default());
 
-  for(auto &key : Config::get().menu.keys) {
-    if(actions.find(key.first) != actions.end()) {
-      if(!key.second.empty())
-        application->set_accel_for_action("app." + key.first, key.second);
+  accelerators_with_multiple_actions.clear();
+
+  for(auto &action_and_key : Config::get().menu.keys) {
+    auto it = actions.find(action_and_key.first);
+    if(it != actions.end()) {
+      if(!action_and_key.second.empty()) {
+        application->set_accel_for_action("app." + action_and_key.first, action_and_key.second);
+
+        guint key = 0;
+        GdkModifierType modifier = static_cast<GdkModifierType>(0);
+        gtk_accelerator_parse(action_and_key.second.c_str(), &key, &modifier);
+        if(key == 0 && modifier == 0)
+          Terminal::get().async_print("\e[31mError\e[m: could not parse key string \"" + action_and_key.second + "\" for action " + action_and_key.first + "\n", true);
+        else
+          accelerators_with_multiple_actions[std::make_pair(key, modifier)].emplace_back(it->second);
+      }
       else
-        application->unset_accels_for_action("app." + key.first);
+        application->unset_accels_for_action("app." + action_and_key.first);
     }
   }
+
+  for(auto it = accelerators_with_multiple_actions.begin(); it != accelerators_with_multiple_actions.end();) {
+    if(it->second.size() < 2)
+      it = accelerators_with_multiple_actions.erase(it);
+    else
+      ++it;
+  }
 }
 
 void Menu::build() {
@@ -602,7 +622,7 @@ void Menu::build() {
     ptr = Glib::RefPtr<Gio::Menu>::cast_dynamic(object);
     right_click_selected_menu = std::make_unique<Gtk::Menu>(ptr);
   }
-  catch(const Glib::Error &ex) {
-    std::cerr << "building menu failed: " << ex.what();
+  catch(const Glib::Error &e) {
+    std::cerr << "building menu failed: " << e.what();
   }
 }

src/menu.hpp

@@ -15,6 +15,7 @@ public:
 
   void add_action(const std::string &name, const std::function<void()> &action);
   std::unordered_map<std::string, Glib::RefPtr<Gio::SimpleAction>> actions;
+  std::map<std::pair<guint, GdkModifierType>, std::vector<Glib::RefPtr<Gio::SimpleAction>>> accelerators_with_multiple_actions;
   void set_keys();
 
   void build();

src/source.cpp

@@ -2597,7 +2597,7 @@ bool Source::View::on_key_press_event(GdkEventKey *event) {
       guint keyval_without_state;
       gdk_keymap_translate_keyboard_state(gdk_keymap_get_default(), event->hardware_keycode, (GdkModifierType)0, 0, &keyval_without_state, nullptr, nullptr, nullptr);
       for(auto &snippet : *snippets) {
-        if((snippet.key == event->keyval || snippet.key == keyval_without_state) && (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK | GDK_META_MASK)) == snippet.modifier) {
+        if(snippet.key == keyval_without_state && (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK | GDK_META_MASK)) == snippet.modifier) {
           insert_snippet(get_buffer()->get_insert()->get_iter(), snippet.body);
           return true;
         }

src/window.cpp

@@ -1939,7 +1939,7 @@ bool Window::on_key_press_event(GdkEventKey *event) {
   guint keyval_without_state;
   gdk_keymap_translate_keyboard_state(gdk_keymap_get_default(), event->hardware_keycode, (GdkModifierType)0, 0, &keyval_without_state, nullptr, nullptr, nullptr);
   for(auto &command : Commands::get().commands) {
-    if((command.key == event->keyval || command.key == keyval_without_state) && (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK | GDK_META_MASK)) == command.modifier) {
+    if(command.key == keyval_without_state && (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK | GDK_META_MASK)) == command.modifier) {
       auto view = Notebook::get().get_current_view();
       auto view_folder = Project::get_preferably_view_folder();
       auto path = view ? view->file_path : view_folder;
@@ -2021,9 +2021,8 @@ bool Window::on_key_press_event(GdkEventKey *event) {
     }
   }
 
-  if(event->keyval == GDK_KEY_Escape) {
+  if(event->keyval == GDK_KEY_Escape)
     EntryBox::get().hide();
-  }
 #ifdef __APPLE__ //For Apple's Command-left, right, up, down keys
   else if((event->state & GDK_META_MASK) > 0 && (event->state & GDK_MOD1_MASK) == 0) {
     if(event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left) {
@@ -2056,6 +2055,15 @@ bool Window::on_key_press_event(GdkEventKey *event) {
       return true;
   }
 
+  auto it = Menu::get().accelerators_with_multiple_actions.find(std::make_pair(keyval_without_state, static_cast<GdkModifierType>(event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK | GDK_MOD1_MASK | GDK_META_MASK))));
+  if(it != Menu::get().accelerators_with_multiple_actions.end()) {
+    // Copy actions since accelerators_with_multiple_actions might change during activations
+    auto actions = it->second;
+    for(auto &action : actions)
+      action->activate();
+    return true;
+  }
+
   return Gtk::ApplicationWindow::on_key_press_event(event);
 }