Not all combinations of tnum/pnum/onum/lnum are picked up

[driehuis]

Wakamai Fondue seems not to detect all combinations of tnum, pnum, lnum en onum when implemented using glyph substitution in features.fea. It may be that I used a non-standard substitution mechanism: I had to experiment quite a bit to achieve what I needed.

Current results for Dinish-Regular v2.012:

lnum Lining Figures
This feature appears to only modify glyphs generated by other features.
pnum Proportional Figures
This feature appears to only modify glyphs generated by other features.

tnum and onum appear as expected.

In real life, the OpenType magic for lnum and pnum seems to work, at least on the application/platform combinations I was able to check.

The font can be downloaded from https://fonts.playbeing.com/dinish/ to reproduce the issue.

The default glyphs in DINish implement the "pnum&lnum" style, so I am not surprised to see these two left blank. Still, seeing a preview like the one shown for tnum and onum would be nice. What is missing completely from Wakamai Fondue is the onum&tnum style, which has separate glyphs and represents my proudest achievement in OpenType magic to date!