You can with the mouse as well. st doesn't support the OSC52 (Ms termcap) for setting the selection by this method, though I have an out-of-tree patch that doe

You can with the mouse as well. st doesn't support the OSC52 (Ms termcap) for setting the selection by this method, though I have an out-of-tree patch that does support it (also available as a branch in the Wayland port).