add respond_to_missing? method to html5 converter to complement method_missing

- when method_missing is define, respond_to_missing? should also be defined
- add tests to verify result of respond_to? (which delegates to respond_to_missing?)

1 files changed, 6 insertions, 2 deletions

diff --git a/lib/asciidoctor/converter/html5.rb b/lib/asciidoctor/converter/html5.rb
index 34c0b40b..926d5dc6 100644
--- a/lib/asciidoctor/converter/html5.rb
+++ b/lib/asciidoctor/converter/html5.rb
@@ -1332,8 +1332,12 @@ Your browser does not support the video tag.
   end
 
   # NOTE adapt to older converters that relied on unprefixed method names
-  def method_missing id, *params
-    !((name = id.to_s).start_with? 'convert_') && (handles? name) ? (send %(convert_#{name}), *params) : super
+  def method_missing id, *args
+    !((name = id.to_s).start_with? 'convert_') && (handles? name) ? (send %(convert_#{name}), *args) : super
+  end
+
+  def respond_to_missing? id, *options
+    !((name = id.to_s).start_with? 'convert_') && (handles? name)
   end
 end
 end