fixes #3725

app/views/artists/_form.html.erb

@@ -16,7 +16,7 @@
   </div>
   <%= f.input :other_names_comma, :hint => "Separate with commas", :as => :text, :label => "Other names" %>
   <%= f.input :group_name %>
-  <%= f.input :url_string, :label => "URLs", :as => :text, :input_html => {:size => "50x5", :value => params.dig(:artist, :url_string) || @artist.urls.join("\n")} %>
+  <%= f.input :url_string, :label => "URLs", :as => :text, :input_html => {:size => "50x5", :value => params.dig(:artist, :url_string) || @artist.urls.join("\n")}, :hint => "You can prefix a URL with - to mark it as dead." %>
 
   <%= dtext_field "artist", "notes" %>
   <%= f.button :submit, "Submit" %>

app/views/artists/_summary.html.erb

@@ -30,7 +30,11 @@
       <ul>
         <% artist.urls.each do |url| %>
           <li>
-            <%= link_to h(url.to_s), h(url) %>
+            <% if url.is_active? %>
+              <%= link_to h(url.to_s), h(url) %>
+            <% else %>
+              <del><%= h(url.url) %></del>
+            <% end %>
             <% if CurrentUser.user.is_moderator? %>
               [<%= link_to("mass edit", edit_moderator_tag_path(:antecedent => "-#{artist.name} source:#{ArtistUrl.normalize_for_search(url.url)}", :consequent => artist.name)) %>]
             <% end %>