[R-pkg-devel] ASCII code for Degree symbol °

[Rafael H. M. Pereira]

Thank you Matt and Ivan. This is all much appreciated. The concern with
portability across OS is also very important! thanks again!

Rafael

On Mon, Jan 24, 2022 at 7:03 AM Matt Denwood <md using sund.ku.dk> wrote:

> Hi Rafael
>
> I find ?stringi::stri_escape_unicode to be extremely useful for generating
> \uxxxx escapes, for example:
>
> > stringi::stri_escape_unicode("°") |> cat("\n")
> \u00b0
>
> Which can be reversed (for checking) using:
>
> > stringi::stri_unescape_unicode("\u00b0") |> cat("\n")
> °
>
> This also works with non-ASCII characters embedded in longer sentences:
>
> > stringi::stri_escape_unicode("Åv — mærkelige tegn!") |> cat("\n")
> \u00c5v \u2014 m\u00e6rkelige tegn!
>
> > stringi::stri_unescape_unicode("\u00c5v \u2014 m\u00e6rkelige tegn!") |>
> cat("\n")
> Åv — mærkelige tegn!
>
> Big thanks to the authors of the stringi package if they are reading this!
>
> Cheers,
>
> Matt
>
>
> On 24/01/2022, 03:26, "R-package-devel on behalf of Rafael H. M. Pereira"
> <r-package-devel-bounces using r-project.org on behalf of
> rafa.pereira.br using gmail.com> wrote:
>
>     Thank you, dbosak01. This was really  really  helpful !
>
>     best wishes,
>     Rafael Pereira
>
>     On Sun, Jan 23, 2022 at 11:09 PM <dbosak01 using gmail.com> wrote:
>
>     > vec <- c("one", "two", "three°")
>     > vec
>     > # [1] "one"    "two"    "three°"
>     >
>     > vec1 <- gsub("[\xB0]", ".", vec)
>     > vec1
>     > # [1] "one"    "two"    "three."
>     >
>     > -----Original Message-----
>     > From: R-package-devel <r-package-devel-bounces using r-project.org> On
> Behalf
>     > Of Rafael H. M. Pereira
>     > Sent: Sunday, January 23, 2022 8:55 PM
>     > To: r-package-devel using r-project.org
>     > Subject: [R-pkg-devel] ASCII code for Degree symbol °
>     >
>     > Hi all.
>     >
>     > In one of the functions of my package (flightsbr), I have a vector
> with
>     > character strings where I need to replace the degree symbol ° with a
> point
>     > '.' So this is what I do:
>     >
>     > vec <- gsub("[°]", ".", vec)
>     >
>     > However, I keep getting this Warning from devtools::check():
>     >   Found the following file with non-ASCII characters:
>     >     utils.R
>     >   Portable packages must use only ASCII characters in their R code,
>     >   except perhaps in comments.
>     >   Use \uxxxx escapes for other characters.
>     >
>     > I assume there is a ASCII representation of °, but I cannot really
> find a
>     > way to do this using ASCII  characters. Any ideas?
>     >
>     > best,
>     > Rafael Pereira
>     >
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>     >
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