[Rd] uninformative error message in R CMD check (PR#9459)

[Kurt Hornik]

>>>>> charlie  writes:

> I just saw the following using R version 2.4.1 (2006-12-18) in
> output from R CMD check.

>     * checking Rd files ... WARNING
>     Error in as.vector(x, mode) : invalid argument 'mode'
>     Execution halted
>     See the chapter 'Writing R documentation files' in manual 'Writing R
>     Extensions'.

> In looking at the help page (the only one in the package so far) I noticed
> that there was no details section even though I wrote one.  The problem
> was a missing close curly, that is, I had

>     \details{
>     Blah, blah, blah.
>     \value{
>     A list ....
>     }

> I don't know whether it is possible to have an actually informative
> error message, but it would be nice if possible.  The error went away
> and the package checked OK when I added the close curly

>     \details{
>     Blah, blah, blah.
>     }
>     \value{
>     A list ....
>     }

I can try, but I need a reproducible example.

For the examples with

\details{
  Bll bll bll.
\value{

etc I tried, I always got

* checking Rd files ... ERROR
Rd files with syntax errors:
  /path/to/file.Rd:
    unterminated section 'details'

-k