[Rd] Encoding issues

[Gábor Csárdi]

>From "Writing R Extensions":

"Only ASCII characters (and the control characters tab, formfeed, LF
and CR) should be used in code files."

So I am afraid you cannot use μm.

Gabor

On Mon, Feb 18, 2019 at 3:36 PM Iñaki Ucar <iucar using fedoraproject.org> wrote:
>
> Hi,
>
> We found a (to our eyes) strange behaviour that might be a bug. First
> a little bit of context. The 'units' package allows us to set the unit
> using both SE or NSE. E.g., these both work in the same way:
>
> units::set_units(1:10, "μm")
> #> Units: [μm]
> #> [1]  1  2  3  4  5  6  7  8  9 10
>
> units::set_units(1:10, μm)
> #> Units: [μm]
> #> [1]  1  2  3  4  5  6  7  8  9 10
>
> That's micrometers, and works fine if the session charset is UTF-8.
> Now the funny part comes with Windows. The first version, with quotes,
> works fine, but the second one fails. This is easy to demonstrate from
> Linux:
>
> LC_CTYPE=en_US.iso88591 Rscript -e 'units::set_units(1:10, "μm")'
> #> Units: [μm]
> #> [1]  1  2  3  4  5  6  7  8  9 10
>
> LC_CTYPE=en_US.iso88591 Rscript -e 'units::set_units(1:10, μm)'
> #> Error: unexpected input in "units::set_units(1:10, μ"
> #> Execution halted
>
> However, if you use the first version, with quotes, in an example, and
> the package is checked on Windows, it fails too (see
> https://ci.appveyor.com/project/edzer/units/builds/22440023#L747). The
> package declares UTF-8 encoding, so none of these errors should, in
> principle, happen. Am I wrong?
>
> Thanks in advance, regards,
> Iñaki
>
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