escape attachment urls on creation.

lib/pleroma/web/twitter_api/utils.ex

@@ -12,7 +12,7 @@ def attachments_from_ids(ids) do
   def add_attachments(text, attachments) do
     attachment_text = Enum.map(attachments, fn
       (%{"url" => [%{"href" => href} | _]}) ->
-        "<a href=\"#{URI.encode(href)}\" class='attachment'>#{Path.basename(href)}</a>"
+        "<a href=\"#{href}\" class='attachment'>#{Path.basename(href)}</a>"
       _ -> ""
     end)
     Enum.join([text | attachment_text], "<br>\n")

test/web/twitter_api/twitter_api_utils_test.exs

@@ -9,6 +9,6 @@ test "it adds attachment links to a given text and attachment set" do
 
     res = Utils.add_attachments("", [attachment])
 
-    assert res == "<br>\n<a href=\"http://heise.de/i%22m%20a%20boy.png\" class='attachment'>i\"m a boy.png</a>"
+    assert res == "<br>\n<a href=\"http://heise.de/i\"m a boy.png\" class='attachment'>i\"m a boy.png</a>"
   end
 end