Hi all,
If an Rcpp function throw an exception with UTF-8 encoding strings, the error
message in R will lose the encoding setting. And the error message will be
displayed as some other characters on Windows.
Here is an example:
library(Rcpp)
sourceCpp(code = "
#include <Rcpp.h>
// [[Rcpp::export]]
void error_with_unicode(std::string input){
Rcpp::stop(input);
}
")
error_with_unicode(enc2utf8("????"))
#> Error: ??????
tmp = try(error_with_unicode(enc2utf8("????")))
#> Error : ??????
Encoding(tmp)
#> [1] "unknown"
tmp
#> [1] "Error : ??????\n"
#> attr(,"class")
#> [1] "try-error"
#> attr(,"condition")
#> <Rcpp::exception: ??????>
Encoding(tmp) = "UTF-8"
tmp
#> [1] "Error : ????\n"
#> attr(,"class")
#> [1] "try-error"
#> attr(,"condition")
#> <Rcpp::exception: ??????>
I see this related post before
http://lists.r-forge.r-project.org/pipermail/rcpp-devel/2013-August/006286.html
. But it seems that we can not set encoding for the error string.
Hope to get any help on this. Thanks.
Best,
Qin Wenfeng.
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