Source a script with a different shell type

Question

Let's say a script is called with /bin/sh. Is it possible to source another script from that script and to have it be interpreted with #!/bin/bash?

It would appear that the #!/bin/bash doesn't do anything...

And by source, at this point I am meaning the functionality of manipulating the parent environment.

Answer 1

No. The whole point of sourcing a script is that the script is interpreted by the shell doing the sourcing. If, as is often the case, /bin/sh is bash, then you will get the desired behavior. Otherwise, you are out of luck.