endash instead of hyphen in collapsed numeric citations
Right now collapsed citations seem to use hyphens: [1-21,24], for example. Is it possible to use endash instead? If there is some kind of limitation (i.e. hyphen is hard-coded), then what library/file/etc should I hack?
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One realistic use case is Russian language: traditionally there is only one type of dash, which is usually considered to be emdash.
A less realistic example is .. delimeter, so citations look like (1..21). I saw this style used at least once, but I have no clue if there is a formal standard.