The FAQ says that over 200 languages are supported but what they actually mean is that the font covers the Unicode Basic Latin, Latin-1 Supplement and possibly some of the Latin Extended.
That is, the font does not support yet anything non-Latin.
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Abenaki, Afaan Oromo, Afar, Afrikaans, Albanian, Alsatian, Amis, Anuta, Aragonese, Aranese, Aromanian, Arrernte, Arvanitic (Latin), Asturian, Atayal, Aymara, Azerbaijani, Bashkir (Latin), Basque, Belarusian (Latin), Bemba, Bikol, Bislama, Bosnian, Breton, Cape Verdean Creole, Catalan, Cebuano, Chamorro, Chavacano, Chichewa, Chickasaw, Cimbrian, Cofán, Cornish, Corsican, Creek, Crimean Tatar (Latin), Croatian, Czech, Danish, Dawan, Delaware, Dholuo, Drehu, Dutch, English, Esperanto, Estonian, Faroese, Fijian, Filipino, Finnish, Folkspraak, French, Frisian, Friulian, Gagauz (Latin), Galician, Ganda, Genoese, German, Gikuyu, Gooniyandi, Greenlandic (Kalaallisut), Guadeloupean Creole, Gwich’in, Haitian Creole, Hän, Hawaiian, Hiligaynon, Hopi, Hotcąk (Latin), Hungarian, Icelandic, Ido, Igbo, Ilocano, Indonesian, Interglossa, Interlingua, Irish, Istro-Romanian, Italian, Jamaican, Javanese (Latin), Jèrriais, Kaingang, Kala Lagaw Ya, Kapampangan (Latin), Kaqchikel, Karakalpak (Latin), Karelian (Latin), Kashubian, Kikongo, Kinyarwanda, Kiribati, Kirundi, Klingon, Kurdish (Latin), Ladin, Latin, Latino sine Flexione, Latvian, Lithuanian, Lojban, Lombard, Low Saxon, Luxembourgish, Maasai, Makhuwa, Malay, Maltese, Manx, Māori, Marquesan, Megleno-Romanian, Meriam Mir, Mirandese, Mohawk, Moldovan, Montagnais, Montenegrin, Murrinh-Patha, Nagamese Creole, Nahuatl, Ndebele, Neapolitan, Ngiyambaa, Niuean, Noongar, Norwegian, Novial, Occidental, Occitan, Old Icelandic, Old Norse, Onĕipŏt, Oshiwambo, Ossetian (Latin), Palauan, Papiamento, Piedmontese, Polish, Portuguese, Potawatomi, Q’eqchi’, Quechua, Rarotongan, Romanian, Romansh, Rotokas, Sami (Inari Sami), Sami (Lule Sami), Sami (Northern Sami), Sami (Southern Sami), Samoan, Sango, Saramaccan, Sardinian, Scottish Gaelic, Serbian (Latin), Seri, Seychellois Creole, Shawnee, Shona, Sicilian, Silesian, Slovak, Slovenian, Slovio (Latin), Somali, Sorbian (Lower Sorbian), Sorbian (Upper Sorbian), Sotho (Northern), Sotho (Southern), Spanish, Sranan, Sundanese (Latin), Swahili, Swazi, Swedish, Tagalog, Tahitian, Tetum, Tok Pisin, Tokelauan, Tongan, Tshiluba, Tsonga, Tswana, Tumbuka, Turkish, Turkmen (Latin), Tuvaluan, Tzotzil, Uzbek (Latin), Venetian, Vepsian, Vietnamese, Volapük, Võro, Wallisian, Walloon, Waray-Waray, Warlpiri, Wayuu, Welsh, Wik-Mungkan, Wiradjuri, Wolof, Xavante, Xhosa, Yapese, Yindjibarndi, Zapotec, Zarma, Zazaki, Zulu, Zuni
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Support for non-English letters makes this more than a tech demo IMO, the whole thing is pretty impressive.
Let's search if "Greek" is supported. It is, because I can see "Creek"? Creek is not Greek, it is the language/script of an American Indian tribe. Then, the list is too long to find a specific language.
What should have happened, is to add in the document an extra paragraph that reads like this:
> This font currently supports the Latin-based Unicode character ranges. See below the full list of language support.
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To meet the needs of global communication, Recursive supports a wide range of Latin-based languages, including Vietnamese. It also comes with an extended set of currencies, symbols, fractions, and arrows.
I do not think this has been a last-minute addition. I read the paragraph again, and I found it difficult to quickly scan the text that is presented in that font. The letters appear to me (Linux/X11) as too thin and faint.
Does anyone else have this issue?