[Dev-luatex] A few newbie questions

[Hans Hagen]

Yue Wang wrote:

> If I am wrong, please point out, I am a font newbie and want to learn more

if you only have ligatures and kerning then you can indeed use simple 
approached, but there happens to be more

(indeed caching is not always needed and if i cook up a generic subset 
caching will not be part of the game at all because performance is the 
least of my concerns then)

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