handle "_" for trashed cards

card/lib/card/format/nest/fetch.rb

@@ -7,6 +7,7 @@ def fetch_nested_card cardish, opts={}
           case cardish
           when Card            then cardish
           when Symbol, Integer then Card.fetch cardish
+          when "_", "_self"    then card.context_card
           else
             opts[:nest_name] = cardish.to_s
             Card.fetch cardish, new: nest_new_args(opts)

card/mod/account/spec/set/right/account_spec.rb

@@ -170,9 +170,23 @@
   end
 
   describe "#send_change_notice" do
-    it "send multipart email" do
-      skip
-      #      pending
+    subject(:mail) do
+      Card[:follower_notification_email].format.render_mail(
+        context:       Card.fetch("A", look_in_trash: true),
+        to:            "joe@user.com",
+        follower:      Card["Joe User"],
+        followed_set:  Card[:all],
+        follow_option: Card[:always]
+      )
+    end
+
+    it "works for deleted card" do
+      delete "A"
+      expect(mail.subject).to eq 'Joe User deleted "A"'
+    end
+
+    it "sends multipart email" do
+      expect(mail.content_type).to include("multipart/alternative")
     end
 
     context "denied access" do

card/spec/lib/card/format/render_spec.rb

@@ -4,16 +4,16 @@
 
     let(:cache_key) do
       "a-Card::Format::HtmlFormat-normal-home_view:content;"\
-      "nest_name:A;nest_syntax:A;view:contentcontent:show"
+      "nest_name:A;nest_syntax:A|content;view:contentcontent:show"
     end
 
     subject { Card::Cache[Card::View] }
 
     it "can be changed with nest option" do
       is_expected.to receive(:fetch).with cache_key
-      render_content "{{A}}"
+      render_content "{{A|content}}"
       is_expected.not_to receive(:fetch)
-      render_content "{{A|content;cache:never}}"
+      render_content "{{A|cache:never}}"
     end
   end
 end