>>>>> Kenn Konstabel <lebats...@gmail.com>
>>>>> on Tue, 5 Nov 2013 13:25:20 +0200 writes:
> I just tried it on ubuntu but within RStudio:
>> cat("abc\b")
> ab
>> cat("abc\b\n")
> ab
>> sessionInfo()
which --- as you allude to below --- shows that RStudio has changed R
in so far that it adds a '\n' even when R, i.e. cat() does not.
I can understand that the RStudio programmers want to protect
their users (*) from getting funny looking output,
but I still don't like the fact that R inside RStudio is tweaked
to behave differently from regular R.
Martin Maechler, R Core Team & ETH Zurich
--
(*) or their software from malfunctioning when the console "looks ugly"
> R version 3.0.2 (2013-09-25) Platform: x86_64-pc-linux-gnu
> (64-bit)
> locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=C
> LC_COLLATE=C [5] LC_MONETARY=C LC_MESSAGES=C LC_PAPER=C
> LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C LC_MEASUREMENT=C
> LC_IDENTIFICATION=C
> --------
> On the same machine but running R in the terminal (tried
> with GNOME terminal, Konsole, and xterm with no difference
> )
>> cat("abc\b")
ab> cat("abc\b\n")
> abc
>> sessionInfo()
> R version 3.0.2 (2013-09-25) Platform: x86_64-pc-linux-gnu
> (64-bit)
> locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C LC_TIME=C
> [4] LC_COLLATE=C LC_MONETARY=C LC_MESSAGES=C [7]
> LC_PAPER=C LC_NAME=C LC_ADDRESS=C [10] LC_TELEPHONE=C
> LC_MEASUREMENT=C LC_IDENTIFICATION=C
> ---------
> But then again ...
> cat("abc\b \n")
> ... seems to work the same way everywhere. It looks like
> the logic in a unix terminal is that \b moves the cursor
> backwards but does not replace or delete anything that was
> there before.
> Regards, Kenn
> On Tue, Nov 5, 2013 at 12:53 PM, Renaud Gaujoux <
> ren...@mancala.cbio.uct.ac.za> wrote:
>> Maybe it's a Linux problem:
>>
>> > cat("abc\b")
ab> cat("abc\b\n")
>> abc > sessionInfo() R version 3.0.2 (2013-09-25)
>> Platform: x86_64-pc-linux-gnu (64-bit)
>>
>> locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3]
>> LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5]
>> LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7]
>> LC_PAPER=en_US.UTF-8 LC_NAME=C [9] LC_ADDRESS=C
>> LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8
>> LC_IDENTIFICATION=C
>>
>> attached base packages: [1] stats graphics grDevices
>> utils datasets methods base
>> >
>> > Sys.info() sysname "Linux" release "3.11.0-12-generic"
>> version "#19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013"
>> nodename "XXXXX" machine "x86_64" login "XXXXX" user
>> "XXXXX" effective_user "XXXXX"
>> >
>>
>>
>>
>>
>> On 1 November 2013 19:54, Dennis Murphy
>> <djmu...@gmail.com> wrote:
>>
>> > I can't reproduce the error, either:
>> >
>> > > cat("abc\b") > ab> cat("abc\b\n") > ab
>> > >
>> > > sessionInfo() > R version 3.0.2 (2013-09-25) >
>> Platform: x86_64-w64-mingw32/x64 (64-bit)
>> >
>> > locale: > [1] LC_COLLATE=English_United States.1252 >
>> [2] LC_CTYPE=English_United States.1252 > [3]
>> LC_MONETARY=English_United States.1252 > [4] LC_NUMERIC=C
>> > [5] LC_TIME=English_United States.1252
>> >
>> > <package info snipped for brevity>
>> >
>> > Dennis
>> >
>>
>> [[alternative HTML version deleted]]
>>
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