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Subject: =?UTF-8?B?UmU6IEd0a0FkYSBhbmQg4oKs?=
Date: Sun, 12 Sep 2021 13:44:54 +0200
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Am 12/9/21 um 9:04 schrieb AdaMagica:
> In Gnat Studio, you can set the encoding  (from the file's context menu
> choose "Properties...") to Latin_9. Then the character 164 is displayed as €
> in the Ada source file. You can even use the € key on the keyboard. That
> does not help, however, since Unicode is based on Latin_1, and when this
> is transformed to UTF8, the currency character appears on the GtkAda GUI.

I suppose this is because the conversion assumes Latin-1 input, and it 
is acceptable given that String type should be in that encoding, but 
with a general string conversion library, like iconv, you can convert 
between any 8-bit character encoding and UTF-8.

Here an Ada binding to iconv (I haven't used it):
https://github.com/ytomino/iconv-ada

And Matreshka League has several 8-bit character encodings, although it 
lacks ISO-8859-15. It should be easy to add ISO-8859-15 based on ISO-8859-1:
http://forge.ada-ru.org/matreshka/wiki/League/TextCodec

But I guess what you are already doing is the easiest approach. It's 
just one character.