On Sun Jan 25 07:35:58 2015, moritz wrote:
> <moritz> m: say 'ö'.encode('ASCII')
> <camelia> rakudo-moar 7e8d8a: OUTPUT«Blob[uint8]:0x<3f>»
> <moritz> that looks like a bug to me
>
> Since ö isn't representable as ASCII, this should throw an exception.
> Currently it encodes to 0x37, which is the question mark / replacement
> character. Since using a replacmement character silently loses
> information, which is a dangerous default.
>
> Here is my wish list:
>
> 1) the default is to throw an exception, let's say
>
> X::Str::NotEncodable.new(
> source => 'ö',
> index => '0',
> destination => 'ASII',
> );
>
> 2) if a replacment is desired, indicate that through an adverb in the
> .encode call, either
>
> 'ö'.encode('ASCII', :replacement)
>
> to get the default, or
>
> 'ö'.encode('ASCII'. :replacement(Buf.new(42)))
>
> to be able to chose a replacement byte or byte sequence.
>
> If somebody implements it, I'll add it to the design docs :-)
>
The default is now to throw an exception (not typed for now), and the
replacement functionality is available (though you specify it as a string, to
ensure you can't replace with something that is bogus in the target encoding).
ilmari++ for working on this; I'm just closing the ticket! Tests in
S32-str/encode.t.
/jnthn
