Is there a max for lookup rules?

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Dan Kreider
Posts: 92
Joined: Thu Mar 25, 2021 8:35 pm

Is there a max for lookup rules?

Post by Dan Kreider »

I'm still running FC13. I've revised a large font I created that uses a lot of contextual alternates: specifically, chained context substitutions. I've checked everything and it seems correct within FC. No errors in validation.

But in every program I try to use it, one of the chained context substitutions is no longer working. All the other chained context substitutions (10 or so) work correctly, there's just one that won't work. And it has 24 rules.

Is there a maximum number of rules per lookup, perhaps? I was very careful with the order of the lookups, and it works as expected within FC.

Thanks,
Dan
Dan Kreider
Music engraving and hymnal publishing
dankreider.com
hymnworks.com
Erwin Denissen
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Re: Is there a max for lookup rules?

Post by Erwin Denissen »

No, there is no such limit.

Please be aware we have fixed several issues related to OpenType layout features, so to be sure your fonts are not affected by bugs from FontCreator 13, you should seriously consider using version 14.
Erwin Denissen
High-Logic
Proven Font Technology
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