Hello, None of the *_Break properties are stable, as far as I can see in https://www.unicode.org/policies/stability_policy.html. If I understand correctly, this means that, at least in theory, it is possible that in Unicode version X a sequence of characters AB forms an extended grapheme cluster, i.e. A × B in the notation used in the algorithm description and in the test data, but then in Unicode version X+1, that changes to A ÷ B.
Am I reading this correctly or is this not possible? Or is it possible in theory but not in practice? Or maybe it has happened before? -- Martinho
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