ddfreyne/nanoc — comment on commit 6de38be3def54929341ee6f6f44db694d9438435
File: test/filters/test_handlebars.rb line 29
By sorin-ionescu:

From [Handlebars.rb](https://github.com/cowboyd/handlebars.rb):

```rb
Handlebars.register_helper(:twice) do |block|
"#{block.call}#{block.call}"
end
template = Handlebars.compile('{{#twice}}Hurray!{{/twice}}')
template.call #=> Hurray!Hurray!
```