[Rd] `c` with lists with "bytes" names encoding

[brodie gaslam]

I'm not entirely sure this even qualifies as a bug given how unusual a case it is:
> x <- list('a')
> name.x <- '\x81'
> Encoding(name.x) <- 'bytes'
> names(x) <- name.x
> x
$`\\x81`[1] "a"> c(x)Error: translating strings with "bytes" encoding is not allowed
> unlist(x)
Error in unlist(x) : 
  translating strings with "bytes" encoding is not allowed> letters[name.x]
[1] NA
> letters[[name.x]]
Error: translating strings with "bytes" encoding is not allowed
Presumably the error is coming from `translateCharsUTF8` or similar.  I imagine the "fix" would be to not translate byte encoded names, or not allow them.

This is not really a problem for me as I can easily work around it.  Just an fyi in case it is of interest to you.

Best regards,

Brodie.
P.S.: SessionInfo():
R version 3.4.0 (2017-04-21)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS Sierra 10.12.6

Matrix products: default
BLAS: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRblas.0.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.4/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

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

other attached packages:
[1] diffobj_0.1.6.9002  unitizer_1.4.2.9003

loaded via a namespace (and not attached):
[1] vetr_0.1.0.9000 compiler_3.4.0  tools_3.4.0     withr_1.0.2    
[5] crayon_1.3.2    memoise_1.1.0   digest_0.6.12   devtools_1.12.0

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