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aliftype / xits

XITS - OpenType implementation of STIX fonts with math support
SIL Open Font License 1.1
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Add superior figures and ffj ligature #74

Closed dbenjaminmiller closed 5 years ago

dbenjaminmiller commented 5 years ago

This change includes the following:

⇒ Why use URW's superior figures and not the fractional figures? The use case is different; in this case, the purpose is for footnotes, and thus the characters, while still lining characters, are narrower than the fractional figures (300 vs. 350). The fractional figures cannot work at this width — slightly narrower characters were needed even where the fractional figures were present. Trying to use the fractional figures resulted in either ugliness arising from trying to use glyphs which were too wide for 300-width, or ugliness resulting from using 350-width superior figures (esp. when mixing the fractional 0, 1, … 3 with the URW 4, 5, … 9). The gylphs used in the precomposed fractions, while perhaps to the naked eye substantially similar to what is needed, were in fact of a different size and were thus also unsuitable for these purposes. Hence, I have separated the superior figures from the fractions. The fractional figures remain the stock STIX/XITS ones; only the added superior figures in each face are using URW glyphs. The URW glyphs were preferable to others because they were OFL-licensed, professionally-drawn, created for this specific (superior figures) purpose, decent-looking and created specifically for a font family which matches this one virtually exactly.

dbenjaminmiller commented 5 years ago

(It didn't make sense to make this two commits due to the combined nature of the changes in the compiled font files.)

dbenjaminmiller commented 5 years ago

(Also, between this and the previous bugfix, I think that a release could be done.)

khaledhosny commented 5 years ago

Thanks! (I took the liberty to do some minor changes to the SFD files before merging).

dbenjaminmiller commented 5 years ago

Great. Out of curiosity, what was the change?

khaledhosny commented 5 years ago

You can see them from the forced-push link above. Mostly removing superfluous stuff FontForge keeps in SFD files that makes version control a bit harder, and some unintended changes.