[R] [FORGED] Re: paste workable code to R 4.0.0 cause error

[Jinsong Zhao]

On 2020/4/29 11:55, Richard M. Heiberger wrote:
> I pasted it into Emacs ESS on Macintosh, Emacs ESS on Windows, and Rgui 
> on Windows.
> All 4.0.0 .  It runs fine.

I test the code using ESS on Windows. It also give error, but with 
different position:

 > gz <- within(gz,
+               {
+                  a <- x1      #a中中中中中中中
Error: invalid multibyte character in parser at line 4

Is it related with locale?

 > sessionInfo()
R version 4.0.0 (2020-04-24)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18363)

Matrix products: default

locale:
[1] LC_COLLATE=Chinese (Simplified)_China.936
[2] LC_CTYPE=Chinese (Simplified)_China.936
[3] LC_MONETARY=Chinese (Simplified)_China.936
[4] LC_NUMERIC=C
[5] LC_TIME=Chinese (Simplified)_China.936

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] compiler_4.0.0 tools_4.0.0


> 
> On Tue, Apr 28, 2020 at 11:36 PM Rolf Turner <r.turner using auckland.ac.nz 
> <mailto:r.turner using auckland.ac.nz>> wrote:
> 
> 
>     The (excellent) MWE that you provided runs just fine for me (in R 4.0.0
>     under Ubuntu 18.04) either by sourcing "aaa.R" or by using
>     copy-and-paste.
> 
>     Must be Windoze thing.  Switch to Linux!
> 
>     cheers,
> 
>     Rolf Turner
> 
>     n 29/04/20 2:25 pm, Jinsong Zhao wrote:
>      > On 2020/4/29 8:05, Jinsong Zhao wrote:
>      >> Hi there,
>      >>
>      >> I have a piece of source code with some inline comments in
>     Chinese. It
>      >> works well when I copy it from a editor (gvim here), and paste
>     it to
>      >> Rgui console on R 3.6.3, however, when I do the same thing, R 4.0.0
>      >> give error message:
>      >>
>      >> Error: invalid multibyte character in parser at line 21
>      >>
>      >> If I source() the code from Rgui console, it can run without any
>     error.
>      >>
>      >> Any hints?
>      >>
>      >> BTW, I do not make a minimal workable example yet.
>      >>
>      >
>      > Here is the MWE:
>      >
>      > D:\system\Desktop>cat aaa.R
>      > gz <- data.frame(x1 = rnorm(100), x10 = rnorm(100))
>      > gz <- within(gz,
>      >                {
>      >                   a <- x1      #a中中中中中中中
>      >                   bbbbb <- x10 #b中中中a中中中中
>      >                   ccccc <- x10 #c中中中中中中中中
>      >                   ddddd <- x10 #d中中中中中b中中中中
>      >                   eeeee <- x10 #e中中中中中中中中
>      >                   fffff <- x10 #f中中中中中c
>      >                })
>      >
>      > The ASCII character in the code could be replace by other ASCII
>      > character. The Chinese character could be replace by other Chinese
>      > character.
>      >
>      > Calling source("aaa.R") could run normally. If you select all the
>     code
>      > and paste it to Rgui console, it will give error:
>      >
>      >  > gz <- data.frame(x1 = rnorm(100), x10 = rnorm(100))
>      >  > gz <- within(gz,
>      > +               {
>      > +                  a <- x1      #a中中中中中中中
>      > +                  bbbbb <- x10 #b中中中a中中中中
>      > +                  ccccc <- x10 #c中中中中中中中中
>      > +                  ddddd <- x10 #d中中中中中b中中中中
>      > +                  eeeee <- x10 #e中中中中中中中中
>      > +                  fffff <- x10 #f中中中中中c
>      > Error: invalid multibyte character in parser at line 9
>      >  >               })
>      > Error: unexpected '}' in "              }"
>      >  >
>      >
>      > If you delete any character from the comment, or add any
>     character to
>      > the comment. The code can paste to the console without any error.
>      >
>      > If you change the length of `bbbbb`...`fffff`, the code also
>     could be
>      > paste and run without any error.
>      >
>      > Best,
>      > Jinsong
> 
> 
>     -- 
>     Honorary Research Fellow
>     Department of Statistics
>     University of Auckland
>     Phone: +64-9-373-7599 ext. 88276
> 
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