From 2067765dc90ae0794ef5bee93bdae79d398fdc91 Mon Sep 17 00:00:00 2001
From: Florian Frank <flori@ping.de>
Date: Mon, 2 Feb 2026 20:32:53 +0100
Subject: [PATCH] Fix Ruby syntax error in keyword arguments for Ruby <= 3.0

- Addresses compatibility issue with Ruby versions **<= 3.0** where this
  syntax was invalid
- Fixed syntax error where `output:` was used without value
---
 lib/toon.rb       | 4 ++--
 spec/toon_spec.rb | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/toon.rb b/lib/toon.rb
index 135a80e..a477ec9 100644
--- a/lib/toon.rb
+++ b/lib/toon.rb
@@ -20,11 +20,11 @@ module Toon
   # @return [nil] if writing to output
   def encode(input, indent: 2, delimiter: DEFAULT_DELIMITER, length_marker: false, output: nil)
     normalized_value = Normalizer.normalize_value(input)
-    options = resolve_options(indent: indent, delimiter: delimiter, length_marker: length_marker, output:)
+    options = resolve_options(indent: indent, delimiter: delimiter, length_marker: length_marker, output: output)
     Encoders.encode_value(normalized_value, options)
   end
 
-  def resolve_options(indent:, delimiter:, length_marker:, output:)
+  def resolve_options(indent:, delimiter:, length_marker:, output: nil)
     {
       indent: indent,
       delimiter: delimiter,
diff --git a/spec/toon_spec.rb b/spec/toon_spec.rb
index aefe16e..0b4131b 100644
--- a/spec/toon_spec.rb
+++ b/spec/toon_spec.rb
@@ -779,7 +779,7 @@
 
     it 'can encode lines to IO interface object' do
       output = StringIO.new
-      expect(Toon.encode(obj, output:)).to be_nil
+      expect(Toon.encode(obj, output: output)).to be_nil
       expect(output.string).to eq "hello: 世界"
     end