Comment 38 for bug 650498

I'm not sure what you're arguing here. The 1903 Sulzbacher Form,
effectively a thorough romanization of ß, *is* intended to be derived
from a long-s+short-s ligature.

It's Fraktur forms which were almost invariably long-s+z or long-s+ezh
forms. It's on *this* point that Tschichold was flatly wrong -
attempting to retrofit long-s+short-s into a Fraktur structure - but
Fraktur is not the origin of the modern character.

The image you post of the Sulzbacher Form is very clearly a long-s
short-s ligature - absolutely no sign of a z or ezh, cursive or otherwise.

Today we do find glorious diversity in the design of ß, but the
Sulzbacher Form is the most common. If we were discussing the design of
a Fraktur face, we would be discussing long-s+ezh designs, but as we're
not, a Sulzbacher Form ß is the right choice for the Ubuntu font. Now,
back to the capital...

Dave