Why is it recommended to have empty line in the end of a source file?

Question

Some code style tools recommend this and I remember seeing some unix command line tools warning about missing empty line.

What is the reasoning for having an extra e

Answer 1

Apart from the fact that it is a nicer cursor position when you move to the end of a file in a text editor.

Having a newline at the end of the file provides a simple check that the file has not been truncated.