Expression (ContextVariableExpression) name printing in strictVariables = false mode

[latyika94]

Hi Guys!

I am planning to use Pebble in my application for templating application mails.
It's nearly perfect for my usecase, but i do not know how to solve the following problem.

I want to render mail templates on maintenance page on web browser in strictVariables = false mode for users, where they can see more or less how would the mail will be sent with resolved expressions.
On maintenance page rendering the template is not a problem, but in strictVariables = false mode every expression became null or "" empty string.

There is a way displaying expression name instead of empty string / null value?

How is looking now:

What i want to achive:

Unfortunately i can not provide map of expressions with dummy values in this screen.

Thanks!