[Rd] is.vector could handle AsIs class better

[Gabriel Becker]

Jan,

I believe it's because it has "a non-NULL attribute other than names" as
per the documentation. In this case its class of "AsIs".

Best,
~G

On Sun, Mar 29, 2020 at 6:29 AM Jan Gorecki <j.gorecki using wit.edu.pl> wrote:

> Dear R-devel,
>
> AsIs class seems to be well handled by `typeof` and `mode` function.
> Those two functions are being referred when explaining `is.vector`
> behaviour in manual. Yet `is.vector` does not seem to be handling AsIs
> class the same way.
>
> is.vector(1L)
> #[1] TRUE
> is.vector(I(1L))
> #[1] FALSE
>
> Is there any reason behind this behaviour?
> Could we have it supported so AsIs class is ignored when `is.vector`
> is doing its job?
>
> Best Regards,
> Jan Gorecki
>
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