the 's' motion sometimes behaves strangely

[timfeirg]

when you are near the end of file (the line above the last line), the s motion would act differently:

assume you have some multiline text inside the default register

here is the first line, it should be preserved
and the second line, I'll substitute the last two line with the text inside register [cursor]
the third line

and then press sk, the text will become...

this is the multi line
inside the register
here is the first line, it should be preserved

the first line have been moved to the last, but if there's a new line below the original text, the s motion would then behave as expected

[proever]

I can reproduce this on the latest release of EasyClip.

Starting with

here is the first line, it should be preserved
and the second line, I'll substitute the last two line with the text inside register [cursor]
the third line
and a fourth

and

this is the multi line
inside the register

on my default register, pressing sk on line 3 produces

here is the first line, it should be preserved
this is the multi line
inside the register
and a fourth

but if I start with

here is the first line, it should be preserved
this is the multi line
inside the register

and press sk on line 3, I get

this is the multi line
inside the register
here is the first line, it should be preserved