Special characters fonts?

[FallingSnow]

I tried to compile my own font using the BDFs from https://github.com/powerline/fonts/tree/a44abd0e742ad6e7fd8d8bc4c3cad5155c9f3a92/Terminus/BDF but it still results in a white box for special characters :(

Original:

Output:

The quality is much worse as well.

[inferiorhumanorgans]

FWIW I've hacked up a quick solution that renders ttystudio files with Canvas so that you get nicer output. It is limited to OTF/TTF fonts as it uses opentype.js. Font substitution needs some work and SVG output is on the horizon.