Comment by nine_k

Non-Latin? Well, OK, Greek and Cyrillic are close enough to Latin to be able to design the font for them following approximately the same style which apply to the Latin characters. You can make a Cyrillic Tahoma or a Greek Signika in line with the Latin variants. I'd say that this is the reasonable limit of non-latin support.

If you take Hebrew, Korean, Georgian, Armenian, Thai, hiragana, katakana, you're in trouble. They all have different proportions, traditions, connections. You can stylize them a bit to be reminiscent of the way the Latin font is made, but you'll have hard time making a Hebrew font with large serifs like Bodoni, and will have hard time making it materially different from Times New Roman in a convincing way. It's better to make a separate typeface.

Arabic / Persian / Urdu, or hanji are their own worlds altogether, hardly comparable to Western typography.