From fa812d6454bc110f076d11f8f9d956da95017514 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 28 Apr 2023 21:59:57 +0900
Subject: [PATCH] Treat hostname as same as aliases

---
 lib/resolv.rb | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/lib/resolv.rb b/lib/resolv.rb
index d878d38..54e8a6f 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -194,16 +194,13 @@ def lazy_initialize # :nodoc:
           File.open(@filename, 'rb') {|f|
             f.each {|line|
               line.sub!(/#.*/, '')
-              addr, hostname, *aliases = line.split(/\s+/)
+              addr, *hostnames = line.split(/\s+/)
               next unless addr
               @addr2name[addr] = [] unless @addr2name.include? addr
-              @addr2name[addr] << hostname
-              @addr2name[addr].concat(aliases)
-              @name2addr[hostname] = [] unless @name2addr.include? hostname
-              @name2addr[hostname] << addr
-              aliases.each {|n|
-                @name2addr[n] = [] unless @name2addr.include? n
-                @name2addr[n] << addr
+              @addr2name[addr].concat(hostnames)
+              hostnames.each {|hostname|
+                @name2addr[hostname] = [] unless @name2addr.include? hostname
+                @name2addr[hostname] << addr
               }
             }
           }