Plus and Minus Having Different Kerning

[skyrailhighline]

I have /one/plus model set to 0, but /one/minus kerning is -14? How do I make this consistent

[skyrailhighline]

Also similarly why do /L/quoteright and /L/quotedblright have different kerning, despite using the same models?

[Tim Ahrens]

The ◀▶ at the left end of the slider indicates that the (negative) value was limited to half the advance with of the quote. If you hover over the ◀▶ you will see a small explanation accordingly.

It seems that the advance width of quoteright is 206, this is why the kerning value is limited to –103, otherwise combinations such as L’A could lead to clashes. The quotedblright seems to have an advance width of 316, this is why the autokerning value is –158.

Limiting the kerning to half the smaller advance width is a bit primitive, I admit. Once the handling of triples are implemented in Kern On (which will be possible in Glyphs 4) there will be better solutions to this.

Which specific values would be the best solution in the above case, in your opinion?

[Tim Ahrens]

Regarding the plus vs minus, it is hard to say without having the file.