From 94a168b9b876e5c988edf29489101774ae88096d Mon Sep 17 00:00:00 2001
From: Afri <58883403+q9f@users.noreply.github.com>
Date: Mon, 2 Jan 2023 17:45:40 +0100
Subject: [PATCH] eth/ens: restore docs for normalize (#198)

---
 lib/eth/ens/resolver.rb | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/eth/ens/resolver.rb b/lib/eth/ens/resolver.rb
index 2a64435e..1b57bace 100644
--- a/lib/eth/ens/resolver.rb
+++ b/lib/eth/ens/resolver.rb
@@ -104,12 +104,16 @@ def namehash(ens_name)
         Util.bin_to_prefixed_hex node
       end
 
-      def normalize(ens_name)
-        name = ens_name.dup
+      # Normalize a string as specified by http://unicode.org/reports/tr46/
+      #
+      # @param input [String] The input string
+      # @return [String] The normalized output string
+      def normalize(input)
+        name = input.dup
         if name.gsub!(/[`~!@#$%^&*()_=+\[\]{}<>,;:'"\/\\|?]/, "").nil?
-          return ens_name.downcase
+          return input.downcase
         else
-          raise ArgumentError, "Provided ENS name contains illegal characters: #{ens_name}"
+          raise ArgumentError, "Provided ENS name contains illegal characters: #{input}"
         end
       end
     end