# [Rd] Top level \Sexpr and R CMD check

Gábor Csárdi c@@rdi@g@bor @ending from gm@il@com
Thu Jul 12 13:30:02 CEST 2018

On Thu, Jul 12, 2018 at 12:23 PM Duncan Murdoch
<murdoch.duncan using gmail.com> wrote:
>
> On 12/07/2018 6:33 AM, Gábor Csárdi wrote:
> > I would like to create \examples{} in the manual dynamically, and
> > while it is possible to do this with a \Sexpr at the top level, R CMD
> > check issues a warning for it. (See below.)
> >
> > Is it intentional that \Sexpr is not allowed at the top level?  The Rd
> > grammar allows this, but R CMD check does not.
> >
> > Is there any other way to generate/modify the \examples{} section dynamically?
>
> That looks like a bug in the check code, but wouldn't it be possible to
> work around it with something like this?
>
> \examples{
> \Sexpr[stage=install,strip.white=FALSE,results=rd]{pkg:::decorate_code('
>    CODE
>   ')}
> }

Thanks for the reply! Unfortunately it seems that \Sexpr is not allowed inside
\examples, either:

checkRd: (7) ps_handle.Rd:46-47: Tag \Sexpr is invalid in a \examples block

G.

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