Plain text custom fraction input

[Khaled Hosny]

On Thu, Jul 23, 2015 at 10:25:22AM +0200, Marcel Schneider wrote:
> The remaining question would then be: What was the idea when at font
> design, the fraction slash was given left and right kerning, so that a
> preceding superscript digit will take exactly the place it has as a
> part of a precomposed fraction, and a following subscript takes place
> like if it were a denominator in one of the precomposed fractions?

What says that this kerning is there for super/subscript glyphs, it can
be equally (and more likely) be there for the numerator and denominator
glyphs.

Regards,
Khaled