As far as I know, Asciidoctor PDF supports all the features of tables that are supported by other converters. There are some quirks that have to do with the fact that it's a fixed-width layout, such as a table cell cannot exceed the height of a single page, but that has more to do with the PDF generation process than the converter.

If you find something that doesn't work as you expect, feel free to file an issue here: https://github.com/asciidoctor/asciidoctor-pdf/issues and I'll look into it.

Best Regards,

-Dan

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