Fix the "posts by tag" render.

lib/jol/blog/post.ex

@@ -19,4 +19,17 @@ defmodule JOL.Blog.Post do
     |> validate_required([:title, :body, :slug])
     |> cast_assoc(:tags)
   end
+
+  def extract_lede(post) do
+    case Regex.named_captures(~r/(?<lede>.*)\n<!-- more -->/s, post.body) do
+      %{"lede" => lede} ->
+        lede
+
+      _ ->
+        post.body
+        |> String.split()
+        |> Enum.take(50)
+        |> Enum.join(" ")
+    end
+  end
 end

lib/jol_web/controllers/tag_html/tag.html.heex

@@ -4,6 +4,6 @@
     <div class="post-summary">
         <p class="post-date"><date><%= post.published_at %></date></p>
         <h3> <.link href={~p"/blog/#{post.slug}"}><%= post.title %> </.link> </h3>
-        <p><%= raw post.lede %></p>
+        <p><%= raw JOL.Blog.Post.extract_lede(post) %></p>
     </div>
 <% end %>