Allow double dots in links

lib/linkify/parser.ex

@@ -301,7 +301,15 @@ defmodule Linkify.Parser do
     end
   end
 
-  defp valid_url?(url), do: !Regex.match?(@invalid_url, url)
+  defp valid_url?(url) do
+    with {_, [scheme]} <- {:regex, Regex.run(@get_scheme_host, url, capture: [:scheme])},
+         true <- scheme == "" do
+      !Regex.match?(@invalid_url, url)
+    else
+      _ ->
+        true
+    end
+  end
 
   @doc """
   Validates a URL's TLD. Returns a boolean.

test/parser_test.exs

@@ -226,6 +226,11 @@ defmodule Linkify.ParserTest do
       assert parse(text) == "(check out <a href=\"http://google.com\">google.com</a>)"
     end
 
+    test "double dot in link is allowed" do
+      text = "https://example.to/something..mp3"
+      assert parse(text) == "<a href=\"#{text}\">#{text}</a>"
+    end
+
     test "do not link urls" do
       text = "google.com"
       assert parse(text, url: false) == text