Re: Bug in Ada - Latin 1 is not a subset of UTF-8

["J-P. Rosen" <rosen@adalog.fr>]

Le 17/10/2016 à 22:57, Jacob Sparre Andersen a écrit :
>> UTF_String should be implemented as an array like String and then
>> > UTF_8_String should be a subtype of UTF_String or a renaming, if that
>> > is the intent.
> I think the best you can do is to ignore the subtypes declared in
> Ada.Strings.UTF_Encoding (as they are just plain wrong), and declare
> your own type for storing UTF-8 encoded strings.

FWIW, the issue of whether to make UTF-8 a different type or a subtype
of String was discussed at the ARG. It was decided to make a subtype
basically on the grounds that:
1) In most cases, you need to read the beginning of a file (presumably
with Text_IO) before you decide whether it is UTF-8 or not
2) We feared that with a separate type, people would complain that "once
again, Ada does it differently than other languages", and that it would
involve many type conversions for no real benefit.

-- 
J-P. Rosen
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