Re: [R] readline in function call with space in prompt.
Hello, Sorry for the delayed reply and thanks for your feedback. I noticed this problem both on Linux and on Windows. Thanks for leading me to the solution. I'm on R version 4.0.3 (2020-10-10) -- "Bunny-Wunnies Freak Out". A common factor between the Windows and the Linux session is Emacs ESS. I was not able to replicate the problem in a terminal. So yes the issue is likely to lie with Emacs ESS. The versions I'm currently using is linux: ess-version: 18.10.3snapshot [elpa: 20200825.829] (loaded from /home/djj/.emacs.d/elpa/ess-20200825.829/) windows: ess-version: 18.10.3snapshot [elpa: 20201122.814] (loaded from c:/Users/Jeremie/AppData/Roaming/.emacs.d/elpa/ess-20201122.814/) I will report it on the ESS mailing list if need be. Many thanks again, Best regards, -- Jeremie Juste __ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] readline in function call with space in prompt.
Not on a machine with latest R at moment so not ruling out something there, but
it is working fine for me.
Karl
R version 4.0.2 (2020-06-22)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19041)
--
Message: 9
Date: Tue, 9 Feb 2021 10:21:58 +1300
From: Rolf Turner
To: Jeremie Juste
Cc: r-help@r-project.org
Subject: Re: [R] readline in function call with space in prompt.
Message-ID: <20210209102158.5b04117d@rolf-Latitude-E7470>
Content-Type: text/plain; charset="windows-1252"
On Mon, 08 Feb 2021 14:28:33 +0100
Jeremie Juste wrote:
> Hello,
>
> I have noticed a behavior that I don't understand. When I call the
> following function from the prompt.
> test <- function(){
> a <- readline("selection: ")
> a
> }
>
> > test()
> > selection: |
> I can only type one character and the readline function exits before
> I can press enter.
>
> however
>
> test1 <- function(){
> a <- readline("selection:")
> a
> }
> > test1()
> > selection:|
> works as expected.
> > selection: abc[Ret]
>
> However calling directly readline with a space in the prompt does
> what I would expect.
>
> > a <- readline("selection: ")
> > selection: abc[Ret]
> > a
> > "abc"
>
> It is the expected behavior or am I missing something?
Works fine for me, with or without the space in the prompt string.
There *must* be something flaky in your system, but I'm damned if I can
come up with any useful suggestions for tracking down just where that
flakiness lies. Sorry.
Perhaps try re-installing R???
cheers,
Rolf Turner
--
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
[[alternative HTML version deleted]]
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] readline in function call with space in prompt.
The function test as defined below by Jeremie works as I would have
expected for me on Windows so I am unable to replicate the problem there.
R version 4.0.3 (2020-10-10)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 19041)
Matrix products: default
locale:
[1] LC_COLLATE=English_United Kingdom.1252
[2] LC_CTYPE=English_United Kingdom.1252
[3] LC_MONETARY=English_United Kingdom.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United Kingdom.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
loaded via a namespace (and not attached):
[1] compiler_4.0.3
On 09/02/2021 09:37, Martin Maechler wrote:
Jeremie Juste
on Mon, 08 Feb 2021 14:28:33 +0100 writes:
> Hello,
> I have noticed a behavior that I don't understand. When I call the
> following function from the prompt.
> test <- function(){
> a <- readline("selection: ")
> a
> }
>> test()
>> selection: |
> I can only type one character and the readline function exits before I
can
> press enter.
> however
> test1 <- function(){
> a <- readline("selection:")
> a
> }
>> test1()
>> selection:|
> works as expected.
>> selection: abc[Ret]
> However calling directly readline with a space in the prompt does what I
> would expect.
>> a <- readline("selection: ")
>> selection: abc[Ret]
>> a
>> "abc"
> It is the expected behavior or am I missing something?
> Best regards,
> Jeremie
> --
> Jeremie Juste
>> R version 4.0.3 (2020-10-10)
Given that the above works fine in Linux (for Jim Lemon and Rolf Turner),
could you tell us *how* you use R?
In the (Windows) RGui or from Rstudio or ESS or yet another way?
Usually the UI (user interface) should not matter, but rather
the R version etc.
But the UI may be important for a function like readline()
which does UI ..
Martin
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Michael
http://www.dewey.myzen.co.uk/home.html
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] readline in function call with space in prompt.
> Jeremie Juste
> on Mon, 08 Feb 2021 14:28:33 +0100 writes:
> Hello,
> I have noticed a behavior that I don't understand. When I call the
> following function from the prompt.
> test <- function(){
> a <- readline("selection: ")
> a
> }
>> test()
>> selection: |
> I can only type one character and the readline function exits before I can
> press enter.
> however
> test1 <- function(){
> a <- readline("selection:")
> a
> }
>> test1()
>> selection:|
> works as expected.
>> selection: abc[Ret]
> However calling directly readline with a space in the prompt does what I
> would expect.
>> a <- readline("selection: ")
>> selection: abc[Ret]
>> a
>> "abc"
> It is the expected behavior or am I missing something?
> Best regards,
> Jeremie
> --
> Jeremie Juste
>> R version 4.0.3 (2020-10-10)
Given that the above works fine in Linux (for Jim Lemon and Rolf Turner),
could you tell us *how* you use R?
In the (Windows) RGui or from Rstudio or ESS or yet another way?
Usually the UI (user interface) should not matter, but rather
the R version etc.
But the UI may be important for a function like readline()
which does UI ..
Martin
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] readline in function call with space in prompt.
On Mon, 08 Feb 2021 14:28:33 +0100
Jeremie Juste wrote:
> Hello,
>
> I have noticed a behavior that I don't understand. When I call the
> following function from the prompt.
> test <- function(){
> a <- readline("selection: ")
> a
> }
>
> > test()
> > selection: |
> I can only type one character and the readline function exits before
> I can press enter.
>
> however
>
> test1 <- function(){
> a <- readline("selection:")
> a
> }
> > test1()
> > selection:|
> works as expected.
> > selection: abc[Ret]
>
> However calling directly readline with a space in the prompt does
> what I would expect.
>
> > a <- readline("selection: ")
> > selection: abc[Ret]
> > a
> > "abc"
>
> It is the expected behavior or am I missing something?
Works fine for me, with or without the space in the prompt string.
There *must* be something flaky in your system, but I'm damned if I can
come up with any useful suggestions for tracking down just where that
flakiness lies. Sorry.
Perhaps try re-installing R???
cheers,
Rolf Turner
--
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] readline in function call with space in prompt.
Hi Jeremie,
Try this:
test <- function() {
a<-readline("selection: ")
return(a)
}
If it starts working, it could be a difference in the way Windows R
handles text input. Both work okay for me on fedora linux.
Jim
On Tue, Feb 9, 2021 at 12:29 AM Jeremie Juste wrote:
>
> Hello,
>
> I have noticed a behavior that I don't understand. When I call the
> following function from the prompt.
> test <- function(){
> a <- readline("selection: ")
> a
> }
>
> > test()
> > selection: |
> I can only type one character and the readline function exits before I can
> press enter.
>
> however
>
> test1 <- function(){
> a <- readline("selection:")
> a
> }
> > test1()
> > selection:|
> works as expected.
> > selection: abc[Ret]
>
> However calling directly readline with a space in the prompt does what I
> would expect.
>
> > a <- readline("selection: ")
> > selection: abc[Ret]
> > a
> > "abc"
>
> It is the expected behavior or am I missing something?
>
> Best regards,
> Jeremie
> --
> Jeremie Juste
> > R version 4.0.3 (2020-10-10)
>
> __
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
