From 413c19a97dd04939d53abd58c6cd3f300ff3b74e Mon Sep 17 00:00:00 2001
From: "byte[]" <byteslice@airmail.cc>
Date: Wed, 4 Dec 2019 16:42:13 -0500
Subject: [PATCH] handle aliases in tag input

---
 lib/philomena/tags.ex | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lib/philomena/tags.ex b/lib/philomena/tags.ex
index f724b2cc..4fc61da8 100644
--- a/lib/philomena/tags.ex
+++ b/lib/philomena/tags.ex
@@ -17,8 +17,7 @@ defmodule Philomena.Tags do
       |> where([t], t.name in ^tag_names)
       |> preload([:implied_tags, aliased_tag: :implied_tags])
       |> Repo.all()
-      |> Enum.map(& &1.aliased_tag || &1)
-      |> Enum.uniq()
+      |> Enum.uniq_by(& &1.name)
 
     existent_tag_names =
       existent_tags
@@ -28,6 +27,11 @@ defmodule Philomena.Tags do
       tag_names
       |> Enum.reject(&existent_tag_names[&1])
 
+    # Now get rid of the aliases
+    existent_tags =
+      existent_tags
+      |> Enum.map(& &1.aliased_tag || &1)
+
     new_tags =
       nonexistent_tag_names
       |> Enum.map(fn name ->