Preload makeup plugins

Author: josevalim

lib/ex_doc/application.ex

@@ -9,7 +9,14 @@ defmodule ExDoc.Application do
       extensions: []
     )
 
+    # Load applications so we can find their modules in docs
     Enum.each([:eex, :ex_unit, :iex, :logger, :mix], &Application.load/1)
+
+    # Start all applications with the makeup prefix
+    for {app, _, _} <- Application.loaded_applications(),
+        match?("makeup_" <> _, Atom.to_string(app)),
+        do: Application.ensure_all_started(app)
+
     Supervisor.start_link([ExDoc.Refs], strategy: :one_for_one)
   end
 end