Is there a way to not render a variable that is not defined?

[lewiesnyder]

For instance given the following template:
Hi my name is {{ name }}

If name is defined as "John Doe" the result would be Hi my name is John Doe
But if name is undefined would render as Hi my name is {{ name }}
Currently it renders as Hi my name is

I would like to accomplish this without something like {{ name|default "{{ name }}" }}