Map key to copy to next window

Question

Say I have two windows open, and I would like to copy lines from the first window to the second window, and then move back the original window. I do this as follows:

<select lines in Visual mode>
y
Ctrl+w
w
p
Ctrl+w
w

I would like to map this to a key. My attempt is the following:

:map <F2> y :wincmd j<CR> p

It successfully copies the lines from one window to the other, but I can't seem to successfully make it jump back up to the previous window. How can I add this next part? The following does not work:

:map <F2> y :wincmd j<CR> p <ESC> :wincmd k<CR>

Answer 1

Because you are in visual mode when you press F2, you need to map this key in visual mode, so you need to substitute :map for :vmap. But be careful with spaces because they move the cursor to the right in normal mode (see :help l). Here you go.

:vmap <F2> y:wincmd j<CR>p:wincmd k<CR>