The .fea files contained in this repository follow standard Adobe feature file syntax and names from the Adobe glyph list for new fonts (AGLFN). They should be usable in most current font editors, but authors may need to adjust feature and glyph names to suit their design.
Using the code from a Typohile thread there are two variants for ss09 that transform numbers with standard digits to roman numerals, e.g. 4 → IV. Variant 1 was posted by Igor Freiberger and variant 2 is by Michael Hernan.
This non-standard feature shows characters from non-roman scripts with Latin glyphs, using respective ISO standards (which usually only cover contemporary letters).
Implemented (but hardly tested):
lookup CyrillicRomanization: ISO 9:1995lookup GreekRomanization: ISO 843:1997lookup HebrewRomanization: ISO 259-1:1984, ISO 259-2:1994, ISO 259-3:1999lookup ArabicRomanization: ISO 233-1:1984 (not DIN 31635:2011-07)
Planned:
lookup ArmenianRomanization: ISO 9985lookup GeorgianRomanization: ?lookup ThaiRomanization: ISO 11940lookup DevanagariRomanization(and other Indian scripts): ISO 15919lookup KanaRomanization(Katakana, Hiragana): ISO 3602 (Strict) “Nihon-siki”lookup PinyinRomanization(Chinese): ISO 7098