R devel - Sep 2016 - Undocumented 'use.names' argument to c()

'c' has an undocumented 'use.names' argument.  I'm not sure
if this is
a documentation or implementation bug.
> c(a = 1)
a
1
> c(a = 1, use.names = F)
[1] 1

Karl

> On Sep 20, 2016, at 7:18 PM, Karl Millar via R-devel <r-devel at
r-project.org> wrote:
> 
> 'c' has an undocumented 'use.names' argument.  I'm not
sure if this is
> a documentation or implementation bug.
It came up on stackoverflow a couple of years ago:

http://stackoverflow.com/questions/24815572/why-does-function-c-accept-an-undocumented-argument/24815653#24815653

At the time it appeared to me to be a documentation lag.

> 
>> c(a = 1)
> a
> 1
>> c(a = 1, use.names = F)
> [1] 1
> 
> Karl
> 
> ______________________________________________
> R-devel at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
David Winsemius
Alameda, CA, USA

>>>>> David Winsemius <dwinsemius at comcast.net>
>>>>>     on Tue, 20 Sep 2016 23:46:48 -0700 writes:
    >> On Sep 20, 2016, at 7:18 PM, Karl Millar via R-devel <r-devel at
r-project.org> wrote:
    >> 
    >> 'c' has an undocumented 'use.names' argument. 
I'm not sure if this is
    >> a documentation or implementation bug.

    > It came up on stackoverflow a couple of years ago:

    >
http://stackoverflow.com/questions/24815572/why-does-function-c-accept-an-undocumented-argument/24815653#24815653

    > At the time it appeared to me to be a documentation lag.

Thank you, Karl and David,
yes it is a documentation glitch ... and a bit more:  Experts know that
print()ing of primitive functions is, eehm, "special".

I've committed a change to R-devel ... (with the intent to port
to R-patched).

Martin

    >> 
    >>> c(a = 1)
    >> a
    >> 1
    >>> c(a = 1, use.names = F)
    >> [1] 1
    >> 
    >> Karl