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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: unicode and wide_text_io
Date: Thu, 28 Dec 2017 17:28:37 +0200
Organization: Tidorum Ltd
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Date: 2017-12-28T17:28:37+02:00
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On 17-12-28 16:32 , Simon Wright wrote:
> "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> writes:
>
>> On 2017-12-28 14:15, Mehdi Saada wrote:
>>
>>> Ok, I'm done with it. It sure is interesting, but I don't want to
>>> even think about all this stuff for the time being... Talk about
>>> "universal standard", when it's (apparently) it's far from universal
>>> or uniform !
>>
>> It is. Everybody uses UTF-8. Even under Windows. The text is converted
>> from/to UTF-16 right after or before passing it to the system
>> call. All processing is UTF-8. E.g. GTK uses UTF-8 consistently no
>> matter what OS.
>>
>>>> Easy: it uses a variable-width representation.
>>> Under the assumption terminals will be able to display it... well,
>>> whatever I use in the end, I've got to suppose it anyway.
>>
>> Sure they are Linux and Windows.
>>
>> Take this program:
>> ------------------------------------
>> with Ada.Text_IO;  use Ada.Text_IO;
>> procedure Superscript is
>> begin
>>    Put_Line
>>    (  "Superscript 1="
>>    &  Character'Val (194)
>>    &  Character'Val (185)
>>    );
>> end Superscript;
>> ------------------------------------
>
> works fine on macOS (no chcp messing needed!)

Depends on the Preferences (-> Settings -> Advanced: Character encoding) 
you set for the Mac Terminal program. While UTF-8 is one of the 
available encodings, I normally have it set to Latin-1, to match Ada and 
GNAT. Latin-1 is fine for the languages I mostly use (English, Swedish, 
Finnish).

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .