Do not factor in screen_hsize() for the visible copy mode screen when adjusting the selection, it should never have any useful history (and when it does, after resize, we shouldn't use it). From Michal Mazurek.
Do not factor in screen_hsize() for the visible copy mode screen when
adjusting the selection, it should never have any useful history (and
when it does, after resize, we shouldn't use it). From Michal Mazurek.

klaxalk/tmux,klaxalk/tmux,klaxalk/tmux,klaxalk/tmux,klaxalk/tmux