alphagov/smartdown — pull request #13 by heathd (2014-08-06 11:31:31+00:00)
Title: Interpolation

This adds support for variable interpolation.

Interpolations are supported into headings and paragraphs using the following syntax:

```markdown

# State pension age calculation for %{name}

Your state pension age is %{state_pension_age}.
```

if a variable referenced in an interpolation is not defined then a `Smartdown::Engine::UndefinedValue` error will be raised.