Question

I am having a problem in copying certain text from a file then copying it to a new split window.
3yy|new|p

in command mode its working

as when i press

‘p’ in split window after copying
its working

Answer 1

I understand that you want to:

1. yank the current line and the two lines below in the current buffer,
2. open an empty buffer in a new horizontal split and
3. paste those three lines in the empty buffer.

Is that correct?

What I don’t get is why you would want to do it from Ex mode while it’s so easy (and working) in normal mode:

3yy
:new<cr>
p

I think that you are confusing ex mode, accessible with Q and command mode, accessible with :. You probably also confuse the :p[rint] command and the :pu[t] command.

Do the following from normal mode:

:.,+2y|new|put!

It may be helpful to know that you can also directly write those three lines to a file with:

:.,+2w filename