Allow uncommenting with any kind of comment (bug #52695): * file-editor-tab.cc (do_comment_selected_text): get list of possible strings for uncommenting and create an according regular expression; (handle_char_added): comment string is snow a string list * octave-qscintilla.cc (comment_string), octave-qscintilla.h: boolean parameter for commenting or uncommenting string, now returns a string list * module.mk: new file octave-settings.h * octave-settings.h: new files with constants for the preferences used for the comment strings * settings-dialog.cc (settings_dialog): add the required radio buttons for the comment strings programmatically, read preferences from settings file; (write_changed_settings): read values from radio buttons and write into the settings file * settings-dialog.h: declare the required radio butons * settings-dialog.ui: add horizontal layouts for the radio buttons

--- a/libgui/src/settings-dialog.h	Wed Dec 27 11:22:26 2017 -0800
+++ b/libgui/src/settings-dialog.h	Wed Dec 27 20:46:11 2017 +0100
@@ -26,8 +26,10 @@
 #include <QDialog>
 #include <QSettings>
 #include <QLineEdit>
+#include <QRadioButton>
 
 #include "color-picker.h"
+#include "octave-settings.h"
 
 namespace Ui
 {
@@ -83,6 +85,9 @@
   color_picker *m_widget_title_fg_color;
   color_picker *m_widget_title_fg_color_active;
   color_picker *m_editor_current_line_color;
+
+  QRadioButton *m_rb_comment_strings[oct_comment_strings_count];
+  QRadioButton *m_rb_uncomment_strings[oct_comment_strings_count];
 };
 
 #endif