A simple test follows:

Hello, world!

Message exists!

Test normal includes:

A test of included files:

Message exists!:
Hello, world!

Test unparsed includes:

A test of included files:

Message exists!:
${message}

No message :(

Test normal includes:

A test of included files:

Message exists!:
Hello, world!

Test unparsed includes:

A test of included files:

Message exists!:
${message}

No message :(