set_window: unrecognized option '--borderless'
Usage: set_window [options] [window=%1]
--name NAME - set the window name (aka title)
--icon-name NAME - set the window name while minimized/iconified
--role ROLE - set the window's role string
--class CLASS - set the window's class
--classname CLASSNAME - set the window's classname
--overrideredirect OVERRIDE - set override_redirect.
1 means the window manager will not manage this window.
--urgency URGENT - set the window's urgency hint.
1 sets the urgency flag, 0 removes it.
I get the following output: