From 4c93df1eeff84463c6fc299b62b78c20c3163a09 Mon Sep 17 00:00:00 2001
From: Mamoru TASAKA <mtasaka@fedoraproject.org>
Date: Fri, 29 Sep 2023 15:00:12 +0900
Subject: [PATCH] Support ruby3.3 Logger by properly initialize super class

Upcoming ruby3.3 will have enhanced Logger class:
https://github.com/ruby/ruby/commit/194520f80e1cdb71faa055d731450855a1ddb8d1
which initializes newly added instance variables.
Without initializing such variables (in super class), now using
subclass of Logger will cause exception.

To avoid this, first call super, then execute additional subclass
initialization.

Closes #4493 .
---
 lib/asciidoctor/logging.rb | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/asciidoctor/logging.rb b/lib/asciidoctor/logging.rb
index 7664c7e75d..1f846c4fba 100644
--- a/lib/asciidoctor/logging.rb
+++ b/lib/asciidoctor/logging.rb
@@ -42,6 +42,7 @@ class MemoryLogger < ::Logger
   attr_reader :messages
 
   def initialize
+    super nil
     self.level = WARN
     @messages = []
   end
@@ -69,6 +70,7 @@ class NullLogger < ::Logger
   attr_reader :max_severity
 
   def initialize
+    super nil
     self.level = WARN
   end