additional reorganization of signal/slot connections in main_window class * main-window.cc (main_window::adopt_editor_widget): Set m_editor_menubar and m_active_editor and call m_editor_window->enable_menu_shortcuts here instead of in main_window constructor. (main_window::adopt_dock_widgets): Initialize m_previous_dock here instead of in main_window constructor. (main_window::adopt_file_browser_widget): Connect file browser signals to main window slots here instead of in main_window::construct. (main_window::adopt_editor_widget): Connect file_editor/main_window signals/slots here instead of in main_window::construct. Connect qt_link signals to file_editorhere instead of in main_window::construct_qt_link. (main_window::make_dock_widget_connections): Connect QApplication::aboutToQuit signal to dock widget save_settings slot here instead of in main_window::construct. * octave-qobject.cc (base_qobject::terminal_widget): Connect interpreter_output and update_prompt slots to qt_link signals here instead of in main_window::construct_qt_link. (base_qobject::file_browser_widget): Connect update_octave_directory slot to qt_link signal here instead of in main_window::construct_qt_link. * octave-qobject.h (base_qobject::have_terminal_window): New function. * qt-interpreter-events.cc (qt_interpreter_events::interpreter_output, qt_interpreter_events::display_exception): Use m_octave_qobj.have_terminal_window instead of gui_running to choose whether to emit signal or write directly to output stream.

--- a/libgui/src/qt-interpreter-events.cc	Mon Jun 21 15:34:29 2021 +0900
+++ b/libgui/src/qt-interpreter-events.cc	Mon Jun 21 14:51:13 2021 -0400
@@ -485,7 +485,7 @@
   void qt_interpreter_events::interpreter_output (const std::string& msg)
   {
     if (m_octave_qobj.experimental_terminal_widget ()
-        && m_octave_qobj.gui_running ())
+        && m_octave_qobj.have_terminal_window ())
       emit interpreter_output_signal (QString::fromStdString (msg));
     else
       {
@@ -498,7 +498,7 @@
                                                  bool beep)
   {
     if (m_octave_qobj.experimental_terminal_widget ()
-        && m_octave_qobj.gui_running ())
+        && m_octave_qobj.have_terminal_window ())
       {
         std::ostringstream buf;
         ee.display (buf);