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

I pasted it into Emacs ESS on Macintosh, Emacs ESS on Windows, and Rgui 
on Windows.
All 4.0.0 .? It runs fine.

On Tue, Apr 28, 2020 at 11:36 PM Rolf Turner <r.turner at auckland.ac.nz 
<mailto:r.turner at 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???????
     >? ???????????????? bbbbb <- x10 #b???a????
     >? ???????????????? ccccc <- x10 #c????????
     >? ???????????????? ddddd <- x10 #d?????b????
     >? ???????????????? eeeee <- x10 #e????????
     >? ???????????????? fffff <- x10 #f?????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???????
     > +????????????????? bbbbb <- x10 #b???a????
     > +????????????????? ccccc <- x10 #c????????
     > +????????????????? ddddd <- x10 #d?????b????
     > +????????????????? eeeee <- x10 #e????????
     > +????????????????? fffff <- x10 #f?????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

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