tag editor: when numbering tracks, discard other track tags if present

NEWS

@@ -3,6 +3,7 @@ ncmpcpp-0.6.5 (????-??-??)
 * Description of mouse wheel usage on volume is now correct.
 * Configure script now fails if either readline or pthread specific headers are not present.
 * Searching in text fields now respects regular expression configuration.
+* When numbering tracks in tag editor all the other track tags are discarded.
 
 ncmpcpp-0.6.4 (2015-05-02)
 

src/tag_editor.cpp

@@ -479,6 +479,8 @@ void TagEditor::enterPressed()
 					(*it)->setTrack(boost::lexical_cast<std::string>(i) + "/" + boost::lexical_cast<std::string>(EditedSongs.size()));
 				else
 					(*it)->setTrack(boost::lexical_cast<std::string>(i));
+				// discard other track number tags
+				(*it)->setTrack("", 1);
 			}
 			Statusbar::print("Tracks numbered");
 		}