From 7afbbabae8b8c04b8aecebf560f537a785dd31d2 Mon Sep 17 00:00:00 2001
From: KW Kwan <kw.kwan@ribose.com>
Date: Tue, 14 Jan 2025 13:33:54 +0800
Subject: [PATCH] Fix deprecation warning from Liquid v5.6.x

---
 lib/metanorma/plugin/lutaml/utils.rb | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/metanorma/plugin/lutaml/utils.rb b/lib/metanorma/plugin/lutaml/utils.rb
index 0732b0c..8b0e16a 100644
--- a/lib/metanorma/plugin/lutaml/utils.rb
+++ b/lib/metanorma/plugin/lutaml/utils.rb
@@ -4,7 +4,12 @@
 require "metanorma/plugin/lutaml/liquid/custom_filters"
 require "metanorma/plugin/lutaml/liquid/multiply_local_file_system"
 
-::Liquid::Template.register_filter(Metanorma::Plugin::Lutaml::Liquid::CustomFilters)
+liquid_klass = if Object.const_defined?("Liquid::Environment")
+                 Object.const_get("Liquid::Environment").default
+               else
+                 Object.const_get("Liquid::Template")
+               end
+liquid_klass.register_filter(Metanorma::Plugin::Lutaml::Liquid::CustomFilters)
 
 module Metanorma
   module Plugin