tag editor: add support for numerating tracks using xx/xx format

src/settings.cpp

@@ -320,6 +320,7 @@ void DefaultConfiguration(ncmpcpp_config &conf)
 	conf.new_design = false;
 	conf.visualizer_use_wave = true;
 	conf.browser_sort_by_mtime = false;
+	conf.tag_editor_extended_numeration = false;
 	conf.set_window_title = true;
 	conf.mpd_port = 6600;
 	conf.mpd_connection_timeout = 15;
@@ -853,6 +854,10 @@ void ReadConfiguration(ncmpcpp_config &conf)
 			{
 				conf.new_design = v == "alternative";
 			}
+			else if (cl.find("tag_editor_extended_numeration") != std::string::npos)
+			{
+				conf.tag_editor_extended_numeration = v == "yes";
+			}
 			else if (cl.find("enable_window_title") != std::string::npos)
 			{
 				conf.set_window_title = v == "yes";

src/settings.h

@@ -213,6 +213,7 @@ struct ncmpcpp_config
 	bool new_design;
 	bool visualizer_use_wave;
 	bool browser_sort_by_mtime;
+	bool tag_editor_extended_numeration;
 	
 	int mpd_port;
 	int mpd_connection_timeout;

src/tag_editor.cpp

@@ -547,7 +547,12 @@ void TagEditor::EnterPressed()
 				{
 					MPD::SongList::iterator it = EditedSongs.begin();
 					for (unsigned i = 1; i <= EditedSongs.size(); ++i, ++it)
-						(*it)->SetTrack(i);
+					{
+						if (Config.tag_editor_extended_numeration)
+							(*it)->SetTrack(IntoStr(i) + "/" + IntoStr(EditedSongs.size()));
+						else
+							(*it)->SetTrack(i);
+					}
 					ShowMessage("Tracks numbered!");
 				}
 				else