1 files changed, 17 insertions, 0 deletions
diff --git a/lib/optparse/kwargs.rb b/lib/optparse/kwargs.rb
new file mode 100644
index 0000000000..ed58cc142b
--- /dev/null
+++ b/lib/optparse/kwargs.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+require 'optparse'
+
+class OptionParser
+  def define_by_keywords(options, meth, **opts)
+    meth.parameters.each do |type, name|
+      case type
+      when :key, :keyreq
+        op, cl = *(type == :key ? %w"[ ]" : ["", ""])
+        define("--#{name}=#{op}#{name.upcase}#{cl}", *opts[name]) do |o|
+          options[name] = o
+        end
+      end
+    end
+    options
+  end
+end