Hi John!

···<date: 2013-08-10, Saturday>···<from: john Culleton>···

> I have asked everywhere else to no avail. In (plain) luatex how do I
> specify the small cap version of an otf font? I use context for
> non-fiction but pdftex and now luatex for fiction.

Plain uses a feature syntax similar to Xetex’s:

  \font \foo = "file:Iwona-Regular.otf:+smcp"
  \foo
  whatever
  \bye

the expression after the second colon is the same as “smcp=yes”
in Context. Multiple definitions are separated by semicola, e.g.:

  \font \foo = "file:Iwona-Regular.otf:+smcp;mode=base;+tlig"

Best regards,
Philipp