default proportional figures

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cdeliason
Posts: 4
Joined: 23 Apr 2021

default proportional figures

Post by cdeliason »

I've made a font with proportional/tabular as well as lining/oldstyle styles. I've decided to have the proportional lining figs be the default, so those glyph names have no suffix (/one, /two, etc.). The others have .tf, .tosf, and .osf.

I've run Kern On and found that the .tf and .tosf figures aren't assigned kerning groups—that's as it should be since we don't want kerned tabular figures. The .osf figures did receive kerning groups, again as it should be. But the default figures (without suffixes) did not get assigned KO kerning groups.

Is this because KO assumes default figs are tabular? Is there a different way I should set up the figs in Glyphs. (I assumed I don't want/need /one.lf if that design is already in the /one slot.)
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Tim Ahrens
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Joined: 11 Jul 2019

Re: default proportional figures

Post by Tim Ahrens »

Kerning groups are not a safe way of seeing whether Kern On kerns a glyph (even though this is an indicator). Can you have a look at whether the glyphs in question have any kerning? While Kern On is running, you can also use the “Pairs” drop-down menu to check this.

The next thing to check is whether the default figures have “No kerning” assigned. If so, this may be a left-over from the initialization, at which point Kern On may have concluded that they are tabular. If so, just switch them to “Standard kerning”.

Note that Kern On does not refer to glyph names at all. Instead, it looks at the OT features: If there is a tnum and/or pnum feature, it can conclude which glyphs are tabular nor not. Have you set up these features?

Feel free to send me the Glyphs file and I can have a closer look.
cdeliason
Posts: 4
Joined: 23 Apr 2021

Re: default proportional figures

Post by cdeliason »

Tim Ahrens wrote:
> The next thing to check is whether the default figures have “No kerning”
> assigned. If so, this may be a left-over from the initialization, at which
> point Kern On may have concluded that they are tabular. If so, just switch
> them to “Standard kerning”.

Thanks, this was it. I'd started the font with a single set of tabular figs, then (after Kern On) decided to convert them. Changing that setting fixed the issue.
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