I think the quotations marks in the second one are a mistake, as I don’t immediately see any other examples that look like that. But then, the documentation on attributes is very unclear.
I'd agree, unless the printed ruby gloss is expected to include the quotation marks? (PTXprint would almost certainly do that, and also print the colon literally, I believe, but that's another issue...)
\rb …\rb*
docs give these examples:I think the quotations marks in the second one are a mistake, as I don’t immediately see any other examples that look like that. But then, the documentation on attributes is very unclear.