save files as unified unicode codepoint

[mroth]

Instead of numbering the file sequentially, how would I modify this to save the file with the unicode codepoint for each character in the filename?

(I can help do the char->codepoint conversion, but it's unclear to me where in this code the "current character" is represented such that I can convert it. Thanks!)

[tmm1]

I'm not sure how to do it. We'd need to parse more of the TTF to figure out which codepoint each image represents.

[mroth]

It looks like the list of chars is contained in the "CMAP table" -- but I haven't found an easy way to read that from Ruby just yet.

[javan]

This is now possible to do with the TTFunk gem. See prawnpdf/ttfunk#22 and github/gemoji#63 for examples.

[liudanking]

how is going now?