Re: Ada and Unicode

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On 2021-04-19 11:08, Stephen Leake wrote:

> (I've never written a program that dealt with utf strings other than
> file names).
>   
> -gnati8 tells the compiler that the source code uses utf-8 encoding.
> 
> -gnatW8 tells the compiler that string literals use utf-8 encoding.

Both are recipes for disaster, especially the second. IMO the source 
must be strictly ASCII 7-bit. It is less dangerous to have UTF-8 or 
Latin-1 identifiers, they could be at least checked, except when used 
for external names. But string literals would be a ticking bomb.

If you need a wider set than ASCII, use named constants and integer 
literals. E.g.

    Celsius : constant String := Character'Val (16#C2#) &
                                 Character'Val (16#B0#) & 'C';

> We could be more helpful if you show what you are trying to do, you've
> tried, and what errors you got.

True

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