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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: unicode and wide_text_io
Date: Wed, 27 Dec 2017 21:04:26 +0100
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Xref: reader02.eternal-september.org comp.lang.ada:49660
Date: 2017-12-27T21:04:26+01:00
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On 2017-12-27 19:08, Mehdi Saada wrote:

> I would like to avoid rewriting an I-O related package, which would
> prove tiresome to the end. As it is, it uses UTF8 (so TEXT_IO),
Ada.Text_IO is Latin-1, at least formally. Use Stream I/O instead if you 
don't want surprises.

> but for ONE, only ONE character, I need to "put" WIDE_TEXT_IO.

No, you don't. Wide Text_IO is UCS-2. Keep on using UTF-8. You probably 
meant output of code points. That is a different beast. Convert a code 
point to UTF-8 string and output that. E.g.:

    function Image (Value : UTF8_Code_Point) return String;

here

    http://www.dmitry-kazakov.de/ada/strings_edit.htm#Strings_Edit.UTF8

For example:

    Image (16#F8D0#) & Image (16#F8D3#) & Image (16#F8D0#)

would be "ADA" in Klingon. They seem don't know that the proper spelling 
is "Ada", but what would you expect from them? (:-))

> The slash character ⁄ would allow better looking fractions for
> outputting rationnals, since it's meant to tell the terminal to
> consider numbersbefore and after as superscript and subscript,
> respectively.

Why don't you simply output super- or subscript digits in UTF-8?

   http://www.dmitry-kazakov.de/ada/strings_edit.htm#7.3

Use Image (Number) from the package instance. That is.

> Is there a way in unicode in UTF8 to shift outside of UTF8 ?

I don't understand the meaning of this question.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de