comp.lang.ada
 help / color / mirror / Atom feed
From: Luke A. Guest <laguest@archeia.com>
Subject: Re: Bug in Ada - Latin 1 is not a subset of UTF-8
Date: Mon, 24 Oct 2016 12:35:16 +0100
Date: 2016-10-24T12:35:16+01:00	[thread overview]
Message-ID: <2045448975.499001639.190687.laguest-archeia.com@nntp.aioe.org> (raw)
In-Reply-To: nuf5lt$1itm$1@gioia.aioe.org

Dmitry A. Kazakov <mailbox@dmitry-kazakov.de> wrote:
> On 2016-10-22 07:51, G.B. wrote:
>> On 21.10.16 18:43, Dmitry A. Kazakov wrote:
>>> For an UTF-8 string proper no checks would be ever required when a
>>> character is appanded.
>> 
>> No Unicode sequence in UTF should ever exist visibly in a
>> program other than either during parsing, or during output.
> 
> Right.
> 
> Any encoded string must implement two distinct interfaces: an array of 
> characters and a sequence of encoding elements (e.g. octets). They 
> somehow fit to each other for Latin-1 and UCS-2 strings, but for 
> majority of encoding methods they are drastically different.
> 

There's no such thing as a character, there are octets for Utf-8 and code
points. 

You should also implement graphème clutter access too.

  reply	other threads:[~2016-10-24 11:35 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-17 20:18 Bug in Ada - Latin 1 is not a subset of UTF-8 Lucretia
2016-10-17 20:57 ` Jacob Sparre Andersen
2016-10-18  5:44   ` J-P. Rosen
2016-10-17 23:25 ` G.B.
2016-10-18  7:41   ` Dmitry A. Kazakov
2016-10-18  8:23     ` G.B.
2016-10-18  8:45       ` Dmitry A. Kazakov
2016-10-18 10:09         ` G.B.
2016-10-18 12:24           ` Dmitry A. Kazakov
2016-10-18 15:10             ` G.B.
2016-10-18 16:35               ` Dmitry A. Kazakov
2016-10-18 17:35                 ` G.B.
2016-10-18 20:03                   ` Dmitry A. Kazakov
2016-10-19  8:15                     ` G.B.
2016-10-19  8:25                       ` G.B.
2016-10-19  8:49                       ` Dmitry A. Kazakov
2016-10-19 14:20                         ` G.B.
2016-10-19 16:20                           ` Dmitry A. Kazakov
2016-10-20  0:31         ` Randy Brukardt
2016-10-20  7:36           ` Dmitry A. Kazakov
2016-10-21 12:28             ` G.B.
2016-10-21 16:13               ` Lucretia
2016-10-21 16:43                 ` Dmitry A. Kazakov
2016-10-22  5:51                   ` G.B.
2016-10-22  7:49                     ` Dmitry A. Kazakov
2016-10-24 11:35                       ` Luke A. Guest [this message]
2016-10-24 13:01                         ` Dmitry A. Kazakov
2016-10-24 14:54                           ` Luke A. Guest
2016-10-22  1:53             ` Randy Brukardt
2016-10-28 21:08         ` Shark8
replies disabled

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox