During my playing around with a font project (see http://github.com/georgd) I have tried to implement some features LinLibertine has and have been looking how this font implemented them.
I'm especially interested in the short f. After reading some specs, I exptected them implemented as calt but looking at the font, I found out that it's actually implemented in a ccmp lookup table like i/j + above accents (which I expected to be).
Now my questions are: Is this becaus calt is not on by default for latin scripts in (afaik) most apps whereas ccmp is? and What problems might arise if one “abuses” the ccmp feature to achieve this?
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