Monkey patch the Liquid gem to keep a list of missing variables and missing filters.
liquid_ext_test.rb contains tests for some of Liquid's existing functionality, and two failing tests for the new functionality.
- Feel free to add new tests
- Please make the change as small as possible
- If the monkey patch is more than 20 lines, then make changes to this liquid fork instead of a monkey patch (https://github.com/apeckham/liquid/)
ruby liquid_ext_test.rb