From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,8ea33c39efc56ac3 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,UTF8 Path: g2news1.google.com!news4.google.com!feeder1.cambriumusenet.nl!feed.tweaknews.nl!193.141.40.65.MISMATCH!npeer.de.kpn-eurorings.net!npeer-ng0.de.kpn-eurorings.net!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail User-Agent: NewsTap/3.2 (iPad) From: Georg Bauhaus Newsgroups: comp.lang.ada Content-Type: text/plain; charset=UTF-8 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Message-ID: <665628584340145751.161513rm-host.bauhaus-maps.arcor.de@news.arcor.de> Subject: =?UTF-8?Q?Re:=20sharp=20=C3=9F=20and=20ss=20in=20Ada=20keywords=20like=20AC=20CESS?= References: Date: 12 Oct 2011 22:56:38 GMT Organization: Arcor NNTP-Posting-Date: 13 Oct 2011 00:56:38 CEST NNTP-Posting-Host: b72f30e0.newsspool1.arcor-online.net X-Trace: DXC=Z_9i@kUl^lTV0Pe9PRnbJ\ic==]BZ:af^4Fo<]lROoRQ<`=YMgDjhgR8Y9d<0BE=7WPCY\c7>ejVXUmD4LM6KaGYiG5SiY>d:JQ X-Complaints-To: usenet-abuse@arcor.de Xref: g2news1.google.com comp.lang.ada:21400 Date: 2011-10-13T00:56:38+02:00 List-Id: "Dmitry A. Kazakov" wrote: >> "acceβ" will be an error, because it mixes two "alphabets", >> Latin and Greek. > > ß has nothing to do with Greek alphabet, it is a ligature promoted to a > separate character. "acceβ" has a Greek BETA, and the compiler would have noticed. >> The compiler will detected the syntax error. > That was not my question. It was what to do with this: OK, different question. > type Acceß_Type is access Integer; > type Access_Type is access String; I'd prefer them to be the same in this particular case, since the Swiss model (which is without ß) is working. > Do these identifiers conflict? > > I : Integer; -- Latin I > І : Integer; -- Ukrainian I Different alphabets, different identifiers. Obfuscation is the work of the programmer. A requirement to use only one "alphabet" for an identifier is a countermeasure. It is easy to write very confusing Ada in ASCII, too. > Is ö Latin? Are k, u, w Latin? BTW, Latin script was all upper case. Yes, they are to be classified as Latin, because programmers are used to it, and the relevant standards apply, too. W is double-v or double-u if you insist that history should play a part, etc. but this only complicates the matter for programming, without need, IMHO. . >> - Cyrillic characters > > "Cyrillic characters" is a wild mixture of various characters and > ligatures of (like German ß) from different national Cyrillic alphabets, > with borrowing from Greek, Latin and later inventions. There is no reason > to treat combinations of those as something cohesive. I think it is reasonable to define useful, simple sets of the characters that people will consider related: It is easier to write a text message in Danish on a dated phone if this phone has French keys rather than Ukrainian keys. French is better in this case because ø might not be on the keyboard, but most other characters are. Whether Danish or French, the Inclusive Latin Alphabet lets me write in either language. The inclusive Cyrillic Alphabet will let others do the same. That is, write using sets of characters that people will consider related, in this practical sense, when using Slavic languages. The real trouble is with geeky identifiers that, for reasons of being cool, must allow the mixing of alphabets, because employing transcription, transliteration, or translation is about as cool as not writing geeky identifiers at all... >> But this should be fairly easy >> to implement, > > It is not about implementation, it is about understanding the rules without > looking into the categorization tables. If a word looks like a mix of Cyrillic characters, then, to a compiler, it is Cyrillic. A programmer seeing Cyrillic characters will, on average, be right in assuming that he is seeing some identifier written in some Slavic language. No more, no less. If the rule says that only one alphabet is permitted per simple name, it reduces complexity for the reader of Slavic language. > > BTW, why "ΔT" should be illegal? Yes, illegal if the alphabet rules apply. The solution is just like in real life: When it is an operator, really, make it one. When it is some prefixed hint, other conventions have worked well, even in textbooks When "delta-t" is the name of something in the problem domain, chances are one can find a specific name that is better than "delta-t".