From 34759a9f5d935ed974fad8b1cbe91f0708dc883a Mon Sep 17 00:00:00 2001
From: Oskar Eichler <oskar@songstats.com>
Date: Sun, 30 Aug 2026 14:22:31 +0200
Subject: [PATCH] Reuse sorted Punycode input order

---
 lib/domain_name/punycode.rb | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/lib/domain_name/punycode.rb b/lib/domain_name/punycode.rb
index 52332f2..10a224f 100644
--- a/lib/domain_name/punycode.rb
+++ b/lib/domain_name/punycode.rb
@@ -120,14 +120,9 @@ def encode(string)
 
         # Main encoding loop
 
-        while h < input.length
-          # All non-basic code points < n have been handled already.  Find
-          # the next larger one
-
-          m = MAXINT
-          input.each { |cp|
-            m = cp if (n...m) === cp
-          }
+        input.reject { |cp| cp < INITIAL_N }.uniq.sort.each do |m|
+          # All non-basic code points < n have been handled already.  Advance
+          # to the next larger one from the ordering computed above.
 
           # Increase delta enough to advance the decoder's <n,i> state to
           # <m,0>, but guard against overflow