How to keep unspecified variables in handlebars?

[TheInvoker]

In handlebars, I have this code

<p>
    {{A}}
    {{B}}
</p>

and then I compile with

{"A" : "test"}

However the end result is

<p>
    test
</p>

But what I really want is:

<p>
    test
    {{B}}
</p>

Since B was not defined in the object, I want the variable text to remain. Is there a flag I can pass to the compile or some function to specify this behavior?

Thanks

[nknapp]

You specific case can be solved with the helperMissing helper.

https://jsfiddle.net/vva7musq/18/

It does not work anymore though, if you use {{a.x}} with dots in it, because that cannot be interpreted as helper call. I'd say there is no other way of doing that.