use signal/slot connection for debugging tooltips in editor * octave-qscintilla.h, octave-qscintilla.cc (octave_qscintalla::show_symbol_tooltip_signal): New signal. (octave_qscintalla::event): Emit show_symbol_tooltip_signal instead of accessing workspace model through octave_qobject. * file-editor.h, file-editor.cc (file_editor::show_symbol_tooltip_signal): New signal. (file_editor::make_file_editor_tab): Forward show_symbol_tooltip_signal from octave_qscintalla to file_editor. * workspace-model.h, workspace-model.cc (workspace_model::show_symbol_tooltip): New function. * main-window.cc (main_window::adopt_editor_widget): Connect file_editor::show_symbol_tooltip_signal to workspace_model::show_symbol_tooltip slot.

--- a/libgui/src/workspace-model.h	Fri Dec 30 23:18:49 2022 -0500
+++ b/libgui/src/workspace-model.h	Mon Jan 02 12:25:42 2023 -0500
@@ -88,6 +88,8 @@
 
     void notice_settings (void);
 
+    void show_symbol_tooltip (const QPoint& pos, const QString& symbol);
+
   private:
 
     void clear_data (void);