R devel - Nov 2008 - (PR#13195) Can't open files containing russian letters in path

Thanks for the attention.
So my windows locale is Russian (Cyrillic, Win-1251). I installed
R-2.8.0-win32.exe. I've got a
file with Cyrillic letters in its name, for example "C:\???.txt".
When I try to open it from R
menu "File->Source R code ..." it produces an error:
> source("C:\\666.txt")
Error in file(file, "r", encoding = encoding) :
  cannot open the connection
In addition: Warning message:
In file(file, "r", encoding = encoding) :
  cannot open file 'C:\666.txt': No such file or directory

the Cyrillic letters "???" in this case are somehow replaced with
"666"

Prof Brian Ripley wrote:
> Can we please have a reproducible example, as well as all the
details
> requested in the posting guide.
>
> There are literally tens of different ways to 'open files' in
R, and
> some at least with Cyrillic file names.  Nor is there any obvious
> difference between 2.8.0 and 2.7.2 patched.
>
> On Wed, 22 Oct 2008, asherman at ksu.ru wrote:
>
>> Full_Name: Arkady  Sherman
>> Version: 2.8.0
>> OS: Windows XP sp3 ntfs file system
>> Submission from: (NULL) (158.195.166.129)
>>
>>
>> Freshly installed version 2.7.2 works well, but 2.8.0 can't
open files
>> with
>> russian letters in its names. In error messages the letters are
>> replaced with
>> different symbols.
>>
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>>
>