Add bin and edit workflow

bin/gems/jekyll-4.4.1/lib/jekyll/utils/thread_event.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module Jekyll
+  module Utils
+    # Based on the pattern and code from
+    # https://emptysqua.re/blog/an-event-synchronization-primitive-for-ruby/
+    class ThreadEvent
+      attr_reader :flag
+
+      def initialize
+        @lock = Mutex.new
+        @cond = ConditionVariable.new
+        @flag = false
+      end
+
+      def set
+        @lock.synchronize do
+          yield if block_given?
+          @flag = true
+          @cond.broadcast
+        end
+      end
+
+      def wait
+        @lock.synchronize do
+          @cond.wait(@lock) unless @flag
+        end
+      end
+    end
+  end
+end