See Support glyph deletion in features - #2 by GeorgSeifert.
In the meantime you can use a dummy glyph and give it Mark, Nonspacing category and subcategory, so it would be ignored when IgnoreMarks lookup flag is set.
See Support glyph deletion in features - #2 by GeorgSeifert.
In the meantime you can use a dummy glyph and give it Mark, Nonspacing category and subcategory, so it would be ignored when IgnoreMarks lookup flag is set.