This is being flagged by CRAN:

  html_describe_con: multiple local function definitions for ‘g’ with
    different formal arguments

I'm not sure it's the most useful CRAN flag, but OTOH, we do have x as an argument to html_describe_con and its internal helper, which is somewhat confusing. Basically we do this:

sapply(x, function(x) ...)

I think it's preferable to avoid reusing x like that, so I chose u since g above uses the same.

Alternatively, we could give these internal helpers a more descriptive name than just g.