unwanted trailing blank line on save

[NetwarSystem]

Please forgive my impertinence, I'm a MicroEMACS noob - didn't start using it until the fall of 1986.

I'm running 4.0.15 on various Linux distros and my work involves a lot of csv files that are getting awk/grep/sed treatment. When I save a file I've edited with MicroEMACS I often find a single newline appended, even if I went nowhere near the end of the file. If I jump to the end, remove the newline, and leave the cursor at the end of the final line with text then I get the expected result.

This should not be difficult to reproduce, I encounter it several times a day. I do not think it's universal, but I can not yet describe the sort of editing that triggers this event.