I think a programming font should cover at least full Latin and basic Greek, and the Unicode blocks General Punctuation, Superscripts and Subscripts, Currency S

I think a programming font should cover at least full Latin and basic Greek, and the Unicode blocks General Punctuation, Superscripts and Subscripts, Currency Symbols, Letterlike Symbols, Number Forms, Arrows, Mathematical Operators, Miscellaneous Technical, Control Pictures, Box Drawing.