Plain text custom fraction input

[Richard Wordingham]

On Thu, 23 Jul 2015 13:54:45 +0800
gfb hjjhjh <c933103 at gmail.com> wrote:

> 1. aren't the 'nut' style you said used in daily English too?
> 2.most of the time I seen fraction within Chinese text are in the
> 'nut' style.
> 3. I think standards should noy be written in a way that users or
> implementers cannot choose their preferred style to represent
> fractions?

The style is left to the rendering system.  The problem I see is that
the usual shaping instructions in a font cannot handle arbitrarily long
numerators and denominators for the nut style.  Perhaps I am wrong
again.

Richard.