Add back option to scroll in stdin buffers

Commit 582c3c56b (Do not add trailing newline to non-scrolling fifo
buffers, 2024-01-28) completely forgot about stdin buffers,
breaking the ability to make them scrolling via "ge".
For example

	while sleep 1; do
	    seq $LINES
	    date
	done | kak

Let's fix that by adding the trailing newline back for stdin buffers.
Unlike "edit -scroll", don't scroll until the user explicitly moves
the cursor.

0 files changed, 0 insertions, 0 deletions