ref: edd7580d861f87f29b6fc8d6a11ad92cb37d6e13
dir: /test/fmtalign.myr/
use std pkg = type msg = union `Tversion tversion ;; type tversion = struct tag : uint16 version : byte[:] ;; ;; const main = { var msg=`Tversion [.tag=45, .version="9P2000"] std.fmt("{}\n", msg) }