R devel - Jul 2018 - Possible bug: R --slave --interactive stdin echo on Linux when stdin is a fifo

On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi <csardi.gabor at gmail.com>
wrote:
> I am trying to control a background R session, connected via a fifo /
> named pipe.
 Is the fifo significant here? If I read the same R code from a file
via `<` I get the input echoed (R 3.4.4, Ubuntu).

Barry

On Thu, Jul 26, 2018 at 12:25 PM Barry Rowlingson
<b.rowlingson at lancaster.ac.uk> wrote:
>
> On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi <csardi.gabor at
gmail.com> wrote:
> > I am trying to control a background R session, connected via a fifo /
> > named pipe.
>
>  Is the fifo significant here? If I read the same R code from a file
> via `<` I get the input echoed (R 3.4.4, Ubuntu).
Yeah, for a file I get echo on both macOS and Linux, but not on Windows.

I think the most useful behavior for --slave is no echo at all, maybe?
But I might be missing the motivation behind --slave.

Another thing is that windows does not have --interactive. Is there a
way to run R
1) without echoing stdin, and
2) without quitting on the first error,
on all platforms?

Gabor
> Barry

On Thu, 26 Jul 2018, G?bor Cs?rdi wrote:
> On Thu, Jul 26, 2018 at 12:25 PM Barry Rowlingson
> <b.rowlingson at lancaster.ac.uk> wrote:
>>
>> On Thu, Jul 26, 2018 at 12:22 AM, G?bor Cs?rdi <csardi.gabor at
gmail.com> wrote:
>>> I am trying to control a background R session, connected via a fifo
/
>>> named pipe.
>>
>>  Is the fifo significant here? If I read the same R code from a file
>> via `<` I get the input echoed (R 3.4.4, Ubuntu).
>
> Yeah, for a file I get echo on both macOS and Linux, but not on Windows.
>
> I think the most useful behavior for --slave is no echo at all, maybe?
> But I might be missing the motivation behind --slave.
>
> Another thing is that windows does not have --interactive. Is there a
> way to run R
> 1) without echoing stdin, and
I'm not seeing an echo for your example on Ubuntu or Fedora.
> 2) without quitting on the first error,
> on all platforms?
One option is to use

     options(error = function() invokeRestart("abort"))

There may be better ways.

Best,

luke
>
> Gabor
>
>> Barry
>
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> https://stat.ethz.ch/mailman/listinfo/r-devel
>
-- 
Luke Tierney
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:   luke-tierney at uiowa.edu
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