Display doc info pages using documentation browser when in GUI mode (Bug #39451) * scripts/help/doc.m: call __octave_link_show_doc if in gui mode. * libinterp/corefcn/octave-link.h, libinterp/corefcn/octave-link.cc (octave_link::show_doc): New function. (octave_link::do_show_doc): New virtual function. (__octave_link_show_doc__): New function. * libgui/src/octave-qt-link.h (octave_qt_link::show_doc_signal): New signal. (octave_qt_link::do_show_doc): New function. * libgui/src/documentation-dock-widget.cc, libgui/src/documentation-dock-widget.h (documentation_dock_widget::showDoc): New function. * libgui/src/main-window.cc, libgui/src/main-window.h (main_window::construct_octave_qt_link): connect handle_show_doc. (main_window::handle_show_doc): New function. (main_window::show_doc_signal): New signal. * libgui/src/qtinfo/parser.cc, libgui/src/qtinfo/parser.h (parser::find_ref): New function. * libgui/src/qtinfo/webinfo.cc, libgui/src/qtinfo/webinfo.h (webinfo::load_ref): New function.

--- a/libgui/src/qtinfo/webinfo.cc	Sat Jul 20 13:01:45 2013 +0200
+++ b/libgui/src/qtinfo/webinfo.cc	Sat Jul 20 22:13:51 2013 -0400
@@ -93,6 +93,7 @@
   resize (500, 300);
 
   set_info_path (QString::fromStdString (Vinfo_file));
+
 }
 
 void
@@ -190,6 +191,21 @@
 }
 
 void
+webinfo::load_ref (const QString &ref_name)
+{
+  QString text = _parser.find_ref (ref_name);
+  if (text.length () > 0)
+    {
+      load_node (text);
+    }
+  else
+    {
+      // not found
+     load_node("Top");
+    }
+}
+
+void
 webinfo::search ()
 {
   if (_search_check_box->isChecked ())