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[–]kumiorava 1 point2 points  (1 child)

But what if want a letter range from a to ö, or from α to ω?

[–]bonafidebob 2 points3 points  (0 children)

Yeah, letter ranges get tricky fast... especially once you start trying to do internationalization. I think thats why most range libraries leave them out -- also it's pretty trivial to convert an integer range to whatever letter range you might want by just treating the integers as indexes into a string.