Apply suggestions to 2 files.

lib/pleroma/application.ex

@@ -93,16 +93,8 @@ defmodule Pleroma.Application do
     # Disable warnings_as_errors at runtime, it breaks Phoenix live reload
     # due to protocol consolidation warnings
     # :warnings_as_errors is deprecated via Code.compiler_options/2 since 1.18
-    if elixir_version = System.version() do
-      [major, minor] =
-        elixir_version
-        |> String.split(".")
-        |> Enum.map(&String.to_integer/1)
-        |> Enum.take(2)
-
-        if major == 1 and minor < 18 do
-          Code.compiler_options(warnings_as_errors: false)
-        end
+    if Version.compare(System.version(), "1.18.0") == :lt do
+      Code.compiler_options(warnings_as_errors: false)
     end
 
     # Define workers and child supervisors to be supervised

lib/pleroma/web/activity_pub/object_validators/tag_validator.ex

@@ -50,7 +50,12 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.TagValidator do
   end
 
   def changeset(struct, %{"type" => "Hashtag", "name" => name} = data) do
-    name = String.downcase(name)
+    name =
+      case name do
+        "#" <> name -> name
+        name -> name
+      end
+
 
     data = Map.put(data, "name", name)