From b2aa0032c0008cc3ade6de4e92931f2d98966414 Mon Sep 17 00:00:00 2001
From: Thierry Deo <thierry.deo@gmail.com>
Date: Wed, 13 Nov 2024 09:07:06 +0100
Subject: [PATCH] Eagerly require `date`.

---
 lib/psych.rb                      |  2 ++
 lib/psych/scalar_scanner.rb       |  2 --
 lib/psych/visitors/to_ruby.rb     |  1 -
 psych.gemspec                     |  2 ++
 test/psych/helper.rb              |  1 -
 test/psych/test_date_time.rb      |  1 -
 test/psych/test_scalar_scanner.rb |  1 -
 test/psych/test_string.rb         | 10 ++++++++++
 8 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/lib/psych.rb b/lib/psych.rb
index d227b1f2..05a3f9c9 100644
--- a/lib/psych.rb
+++ b/lib/psych.rb
@@ -1,4 +1,6 @@
 # frozen_string_literal: true
+require 'date'
+
 require_relative 'psych/versions'
 case RUBY_ENGINE
 when 'jruby'
diff --git a/lib/psych/scalar_scanner.rb b/lib/psych/scalar_scanner.rb
index de214423..8cf868f8 100644
--- a/lib/psych/scalar_scanner.rb
+++ b/lib/psych/scalar_scanner.rb
@@ -4,8 +4,6 @@ module Psych
   ###
   # Scan scalars for built in types
   class ScalarScanner
-    autoload :Date, "date"
-
     # Taken from http://yaml.org/type/timestamp.html
     TIME = /^-?\d{4}-\d{1,2}-\d{1,2}(?:[Tt]|\s+)\d{1,2}:\d\d:\d\d(?:\.\d*)?(?:\s*(?:Z|[-+]\d{1,2}:?(?:\d\d)?))?$/
 
diff --git a/lib/psych/visitors/to_ruby.rb b/lib/psych/visitors/to_ruby.rb
index 9e4da5ef..f0b4a94e 100644
--- a/lib/psych/visitors/to_ruby.rb
+++ b/lib/psych/visitors/to_ruby.rb
@@ -79,7 +79,6 @@ def deserialize o
           class_loader.big_decimal._load o.value
         when "!ruby/object:DateTime"
           class_loader.date_time
-          require 'date' unless defined? DateTime
           t = @ss.parse_time(o.value)
           DateTime.civil(*t.to_a[0, 6].reverse, Rational(t.utc_offset, 86400)) +
             (t.subsec/86400)
diff --git a/psych.gemspec b/psych.gemspec
index a3fc53a8..a32f79bc 100644
--- a/psych.gemspec
+++ b/psych.gemspec
@@ -75,6 +75,8 @@ DESCRIPTION
     s.add_dependency 'stringio'
   end
 
+  s.add_dependency 'date'
+
   s.metadata['msys2_mingw_dependencies'] = 'libyaml'
   s.metadata['changelog_uri'] = s.homepage + '/releases'
 end
diff --git a/test/psych/helper.rb b/test/psych/helper.rb
index 4e82887c..639f6055 100644
--- a/test/psych/helper.rb
+++ b/test/psych/helper.rb
@@ -2,7 +2,6 @@
 require 'test/unit'
 require 'stringio'
 require 'tempfile'
-require 'date'
 
 require 'psych'
 
diff --git a/test/psych/test_date_time.rb b/test/psych/test_date_time.rb
index 3379bd24..4565b8e7 100644
--- a/test/psych/test_date_time.rb
+++ b/test/psych/test_date_time.rb
@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 require_relative 'helper'
-require 'date'
 
 module Psych
   class TestDateTime < TestCase
diff --git a/test/psych/test_scalar_scanner.rb b/test/psych/test_scalar_scanner.rb
index 8907d125..2637a74d 100644
--- a/test/psych/test_scalar_scanner.rb
+++ b/test/psych/test_scalar_scanner.rb
@@ -1,6 +1,5 @@
 # frozen_string_literal: true
 require_relative 'helper'
-require 'date'
 
 module Psych
   class TestScalarScanner < TestCase
diff --git a/test/psych/test_string.rb b/test/psych/test_string.rb
index 84ae5cbb..cfd235a5 100644
--- a/test/psych/test_string.rb
+++ b/test/psych/test_string.rb
@@ -50,6 +50,16 @@ def test_doublequotes_when_there_is_a_single
       assert_equal str, Psych.load(yaml)
     end
 
+    def test_single_quote_when_matching_date
+      pend "Failing on JRuby" if RUBY_PLATFORM =~ /java/
+
+      lib = File.expand_path("../../../lib", __FILE__)
+      assert_separately(["-I", lib, "-r", "psych"], __FILE__, __LINE__ + 1, <<~'RUBY')
+        yml = Psych.dump('2024-11-19')
+        assert_equal '2024-11-19', Psych.load(yml)
+      RUBY
+    end
+
     def test_plain_when_shorten_than_line_width_and_no_final_line_break
       str = "Lorem ipsum"
       yaml = Psych.dump str, line_width: 12