Screen sessions vertically split display incorrectly

[200sc]

On account of the newline to \r\n replace that happens here(https://github.com/gliderlabs/ssh/blob/master/session.go#L122), when running screen and splitting the screen vertically via CTRL+A + | (shift +\), the middle bar down the screen breaks off and ends up on the left side of the screen.

Screenshot:

Expected (this shows with the replacement commented out):

[belak]

This is a fun issue. I seem to remember this being added in as a hack to make it easier to add pty support, but I'm not completely sure.

[infinisil]

I just ran into this. I can confirm that removing those Replace fixed any issues with screen (or tmux in my case) and vertical splits. I did so in a fork here