[gldrk]

Core fonts absolutely support Unicode. My (non-Xft) xterm windows are full of Unicode characters right now. It is true that anti-aliasing is not supported by the X.Org server, although scalable fonts have been for a while (https://www.x.org/archive/X11R7.5/doc/fonts/fonts.html#AEN49...). But you don't need anti-aliasing on a high-DPI display, and on a low-DPI display you can use any of the many beautiful bitmap fonts, unlike a lot of ‘modern apps’ these days.