07-26-2018, 02:18 PM
Gimp's Text tool works with Unicode characters and as such supports about anything (even the new emoji stuff). The problems are usually external to Gimp: input method (but you can always copy/paste), or support for the characters in the font used.
(numerals copy/pasted from https://en.wikipedia.org/wiki/Eastern_Arabic_numerals)
(numerals copy/pasted from https://en.wikipedia.org/wiki/Eastern_Arabic_numerals)