Actually, it just needs to be context sensitive. If I have an English document and I have an index which has an entry for Zsigmond, it would be placed between Z

Actually, it just needs to be context sensitive. If I have an English document and I have an index which has an entry for Zsigmond, it would be placed between Zebra and Zygote. But, if I have a Hungarian document, then the correct ordering would be to have Zsigmond after Zebra and Zygote. Any correctly-implemented program that deals with sorting should not be assuming it can just sort on code point¹ and Hungarian is one of the standard collations that is part of the Unicode reference implementations so it shouldn't be a problem. The fact that a lot of software is badly-implemented is not an excuse for software to continue to be so. I did a quick check and saw that I can specify Hungarian in MySQL as a collation for a table and I also know that it's available in Java and even JavaScript. ⸻ 1. This sorting is wrong not just for Hungarian but for every language including English which would expect, e.g., naïve to be sorted between nag and nanny and not after nay.