Absolutely true if (as you wrote) a U+002F SOLIDUS appears between the 3 and the 8. This is why I've been limiting my scope to the case where a U+2044 FRACTION SLASH appears between them, i.e., the specific sequence that NFKC or NFKD decomposes a Unicode vulgar fraction into.

In reply to Re^5: Unicode vulgar fraction composition by raygun
in thread Unicode vulgar fraction composition by raygun

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