Just tested this - it seems like a handy feature but apparently also dependent on the application using a specific textbox from the macOS UI toolkit. So it does

Just tested this - it seems like a handy feature but apparently also dependent on the application using a specific textbox from the macOS UI toolkit. So it doesn't work in iTerm, and probably not in Firefox either? So not an "OS" feature exactly, and probably something the GTK folks could provide an equivalent for if they don't already.