small bug fix

when using search, hidden tags appeared as results but couldn't be selected. now a message tells you what to do

index.js

@@ -1408,6 +1408,7 @@ function showInfo() {
 function hideInfo() {
 	document.getElementById('info_search_input').value = '';
 	document.getElementById('information').classList.remove('shown');
+	delete document.getElementById('info_search_input').dataset.match;
 	informationMode = false;
 }
 
@@ -1449,10 +1450,20 @@ function searchForTagsInfo(event) {
 		tags.forEach(function(tag) {
 			let tagName = tag.querySelector('input').name;
 			if(tagName.toLowerCase().indexOf(input.value.toLowerCase()) > -1) {
-				let result = tag.cloneNode(true);
-				result.addEventListener('change', function(e) {
-					toggleMatchingTag(this);
-				});
+				let result;
+				if(tag.classList.contains('hidden')) {
+					result = document.createElement('label');
+					if(tag.querySelector('.count').textContent.indexOf('- 0') > -1) {
+						result.textContent = tagName + ' - is hidden because zero artist match that tag';
+					} else {
+						result.textContent = tagName + ' - is hidden because "hide low-use tags" is checked';
+					}
+				} else {
+					result = tag.cloneNode(true);
+					result.addEventListener('change', function(e) {
+						toggleMatchingTag(this);
+					});
+				}
 				output.appendChild(result);
 				match = tagName;
 				matches++;