[O] How to have a sideways longtable?

[William Denton]

I have a long and wide table of text I'd like to have sideways (landscape 
orientation) and stretch over multiple pages.  I can do either one but not both 
together.

Here's a gist with a long, wide table:

https://gist.github.com/wdenton/f11acf2e5257b29789f806b854d0709e

If you take that and export it to LaTeX it will be long (on two pages) but not 
sideways, with some columns are cut off on the right---the float is being 
ignored, it seems.

Using the float on its own does work, and this appears in the output:

\begin{sidewaystable}[htbp]

But when the longtable is there, it's just this without any sidewaystable:

\begin{longtable}{rrllllll}

Is this a bug?  I assumed they'd work together out of the box, but maybe I need 
to do something special.

Bill
--
William Denton :: Toronto, Canada :: https://www.miskatonic.org/
Caveat lector.