From 240c5bec9351a246762f7e2a05c421b9e4db1673 Mon Sep 17 00:00:00 2001
From: Shizuo Fujita <fujita@clear-code.com>
Date: Fri, 26 Jun 2026 13:43:39 +0900
Subject: [PATCH 1/2] gem: remove copyright-header to bypass charlock_holmes
 build failure

`charlock_holmes` (0.7.9) fails to build its native extension on
environments with GCC 16.1.1 and ICU 78 due to C++ compatibility issues.

Since `copyright-header` is a development utility used for inserting
copyright notices into source files, removing it has no impact on the
core functionality of the application.

This change unblocks `bundle update` on modern environments by removing
the dependency chain: copyright-header -> github-linguist -> charlock_holmes.
---
 Gemfile | 1 -
 1 file changed, 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index a30e105..4e3edc6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,6 @@ source 'https://rubygems.org'
 gem 'bump'
 gem 'bundler'
 gem 'codeclimate-test-reporter', '< 1.0.0', require: false
-gem 'copyright-header'
 gem 'minitest', '~> 5.0' # minitest/mock was removed in minitest 6.0, so we need to use minitest 5.x for now
 gem 'rake'
 gem 'rubocop'

From 2bcab21d04cd3f195072c6832324f10ffe987325 Mon Sep 17 00:00:00 2001
From: Shizuo Fujita <fujita@clear-code.com>
Date: Fri, 26 Jun 2026 17:55:01 +0900
Subject: [PATCH 2/2] Remove headers task

---
 Rakefile | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/Rakefile b/Rakefile
index 4c55111..eac6c60 100644
--- a/Rakefile
+++ b/Rakefile
@@ -19,22 +19,3 @@ Rake::TestTask.new(:base_test) do |task|
   task.pattern = 'test/**/test_*.rb'
   task.warning = false
 end
-
-desc 'Add copyright headers'
-task :headers do
-  require 'rubygems'
-  require 'copyright_header'
-
-  args = {
-    license: 'Apache-2.0',
-    copyright_software: 'Fluentd Kubernetes Metadata Filter Plugin',
-    copyright_software_description: 'Enrich Fluentd events with Kubernetes metadata',
-    copyright_holders: ['Red Hat, Inc.'],
-    copyright_years: ['2015-2021'],
-    add_path: 'lib:test',
-    output_dir: '.'
-  }
-
-  command_line = CopyrightHeader::CommandLine.new(args)
-  command_line.execute
-end