Add possibility to edit the function related to the actual keyword in editor * octave-qscintilla.cc(get_actual_word): new internal function; (context_help_doc): uses new function get_actual_word; (contextMenuEvent): new context menu for editing function of actual keyword (context_edit): function for edit action in editor file menu; (contextmenu_edit): new slot for context menu; * octave-qscintilla.h: new functions context_edit, contextmenu_edit, get_actual_word * file-editor-tab.cc(context_edit): new slot for editor menu action * file-editor-tab.h: new slot context_edit * file-editor.cc(request_context_edit): new slot for file menu entry; (construct): new entry in file menu for editing function of actual keyword; (add_file_editor_tab): connect new signal fetab_context_edit to the new slot context_edit in file_editor_tab; (set_shortcuts): enable/disable new shortcut when editor focus changes (check_actions): enable/disable new action depending on existing tabs * file-editor.h: new signal fetab_context_edit, new slot request_context_edit, new edit function action

--- a/libgui/src/m-editor/file-editor.h
+++ b/libgui/src/m-editor/file-editor.h
@@ -75,6 +75,7 @@
   void fetab_cut (const QWidget* ID);
   void fetab_paste (const QWidget* ID);
   void fetab_context_help (const QWidget* ID, bool);
+  void fetab_context_edit (const QWidget* ID);
   void fetab_save_file (const QWidget* ID);
   void fetab_save_file_as (const QWidget* ID);
   void fetab_print_file (const QWidget* ID);
@@ -117,6 +118,7 @@
   void request_paste (void);
   void request_context_help (bool);
   void request_context_doc (bool);
+  void request_context_edit (bool);
   void request_save_file (void);
   void request_save_file_as (void);
   void request_run_file (void);
@@ -207,6 +209,7 @@
   QAction *_print_action;
   QAction *_run_action;
 
+  QAction *_context_edit_action;
   QAction *_save_action;
   QAction *_save_as_action;
   QAction *_close_action;