George Williams asked about the feature file syntax:
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In section 4.d we are told that MarkAttachmentType/UseMarkFilteringSet
both take <glyph class name>s, yet in 9.b we are told they take
<mark class name>s
In 6.e a NULL anchor is defined by <anchorNULL>, shouldn't this be
<anchor NULL>? In that same example the NULL anchor is not followed by
a mark keyword and class, is this correct syntax?
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For section 4.d vs 9.b,, both are incomplete. For both filtering types, the code can take either mark class names or glyph class names.
In section 4.e "<anchorNULL>" is a typo - it should indeed be '<anchor NULL>". It is not followed by a keyword and class. This has the effect of not creating a ligature component entry for the last ligature component, so that no marks will attach to it.
- Read Roberts
