R help - Feb 2024 - Avoiding Delete key function as 'Quit R' in Rterm when there are no characters in cursor line

Duncan, do you think it's worth to comment this in R-devel list?

Iago

________________________________
De: CALUM POLWART <polc1410 at gmail.com>
Enviat el: divendres, 9 de febrer de 2024 18:28
Per a: Duncan Murdoch <murdoch.duncan at gmail.com>
A/c: Iago Gin? V?zquez <iago.gine at sjd.es>; r-help at r-project.org
<r-help at r-project.org>
Tema: Re: [R] Avoiding Delete key function as 'Quit R' in Rterm when
there are no characters in cursor line

I don't use term, but I've just tested it and this is reproducable.

Is it a bug? Not sure. If you hit c after getting the message it will cancel the
q() request.


On Fri, 9 Feb 2024, 17:21 Duncan Murdoch, <murdoch.duncan at
gmail.com<mailto:murdoch.duncan at gmail.com>> wrote:
That looks to me like a bug, but I don't use Windows any more, so I
won't offer to try to fix it for you.  In fact I don't think Rterm has
many users at all:  most Windows users probably use RStudio or one of
the other graphical front ends (Visual Studio, Emacs, Rgui, etc.)

So maybe you can track down the issue, or someone else will try.  Or
maybe you'll just have to avoid triggering the bug (if it really is one).

Duncan Murdoch

On 09/02/2024 10:03 a.m., Iago Gin? V?zquez wrote:
> Yes, indeed, I am talking about Rterm in Windows.
>
> Iago
> ------------------------------------------------------------------------
> *De:* Duncan Murdoch <murdoch.duncan at
gmail.com<mailto:murdoch.duncan at gmail.com>>
> *Enviat el:* divendres, 9 de febrer de 2024 13:50
> *Per a:* Iago Gin? V?zquez <iago.gine at sjd.es<mailto:iago.gine at
sjd.es>>
> *Tema:* Re: [R] Avoiding Delete key function as 'Quit R' in Rterm
when
> there are no characters in cursor line
> On 09/02/2024 6:25 a.m., Iago Gin? V?zquez wrote:
>> Hi all,
>>
>> I cite from README.Rterm
>>
>> ^D, DEL?????: Delete the character under the cursor.
>>
>> That is the general behaviour, but when there is no character (neither
under the cursor nor at its left), pressing the Delete key suggests closing the
R terminal. Is there any (configurable) way to avoid this behaviour?
>
> Are you talking about rterm in Windows, or which front end?
>
> Duncan Murdoch
>
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	[[alternative HTML version deleted]]

On 2/9/24 21:39, Iago Gin? V?zquez wrote:
> Duncan, do you think it's worth to comment this in R-devel list?
Duncan filed a bug report via R bugzilla (thanks).

There is no way to disable this functionality and it has existed for 
very long time, I tested that at least in R 3.0. Optionally ending the 
session was I believe intentional with Ctrl+D, when the input is empty, 
and it is also how Unix terminals work. But ending the session with DEL 
was probably an implementation compromise and I've changed that in 
R-devel. Thanks for the report.

More implementation details in the bugzilla report:
https://bugs.r-project.org/show_bug.cgi?id=18666

Best
Tomas
> Iago
>
> ________________________________
> De: CALUM POLWART <polc1410 at gmail.com>
> Enviat el: divendres, 9 de febrer de 2024 18:28
> Per a: Duncan Murdoch <murdoch.duncan at gmail.com>
> A/c: Iago Gin? V?zquez <iago.gine at sjd.es>; r-help at r-project.org
<r-help at r-project.org>
> Tema: Re: [R] Avoiding Delete key function as 'Quit R' in Rterm
when there are no characters in cursor line
>
> I don't use term, but I've just tested it and this is reproducable.
>
> Is it a bug? Not sure. If you hit c after getting the message it will
cancel the q() request.
>
>
> On Fri, 9 Feb 2024, 17:21 Duncan Murdoch, <murdoch.duncan at
gmail.com<mailto:murdoch.duncan at gmail.com>> wrote:
> That looks to me like a bug, but I don't use Windows any more, so I
> won't offer to try to fix it for you.  In fact I don't think Rterm
has
> many users at all:  most Windows users probably use RStudio or one of
> the other graphical front ends (Visual Studio, Emacs, Rgui, etc.)
>
> So maybe you can track down the issue, or someone else will try.  Or
> maybe you'll just have to avoid triggering the bug (if it really is
one).
>
> Duncan Murdoch
>
> On 09/02/2024 10:03 a.m., Iago Gin? V?zquez wrote:
>> Yes, indeed, I am talking about Rterm in Windows.
>>
>> Iago
>>
------------------------------------------------------------------------
>> *De:* Duncan Murdoch <murdoch.duncan at
gmail.com<mailto:murdoch.duncan at gmail.com>>
>> *Enviat el:* divendres, 9 de febrer de 2024 13:50
>> *Per a:* Iago Gin? V?zquez <iago.gine at sjd.es<mailto:iago.gine
at sjd.es>>
>> *Tema:* Re: [R] Avoiding Delete key function as 'Quit R' in
Rterm when
>> there are no characters in cursor line
>> On 09/02/2024 6:25 a.m., Iago Gin? V?zquez wrote:
>>> Hi all,
>>>
>>> I cite from README.Rterm
>>>
>>> ^D, DEL?????: Delete the character under the cursor.
>>>
>>> That is the general behaviour, but when there is no character
(neither under the cursor nor at its left), pressing the Delete key suggests
closing the R terminal. Is there any (configurable) way to avoid this behaviour?
>> Are you talking about rterm in Windows, or which front end?
>>
>> Duncan Murdoch
>>
> ______________________________________________
> R-help at r-project.org<mailto:R-help at 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.
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at 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.