Le 28/11/15 19:28, Garrett D'Amore a écrit : > There is no such thing as extended ASCII and the article is very wrong in > that regard. Please don't use the term anywhere since it furthers confusion. > > There are 8859 encodings that are commonly used in Western Europe (especially > 8859-1 was widely used until replaced with 8859-15) but even then there are > multiple different ones and they encode different character sets. For > example 8859-1 encodes mostly Spanish and French and a couple of others but > 8859-5 encodes Cyrillic. There are quite a few variations here. > > And notably none of them are compatible with the others. > > The only "portable" single byte encoding is pure ASCII which is formally also > called ISO 10646 and identified in the POSIX specification as the Portable > Character Set. It really is only sufficient for US English and the few > locales that can be represented with unaccented English letters and don't > require a currency symbol other than the dollar sign. > > Attempts to make the 8859 character sets implied in wider contexts other than > when explicitly specified are misguided and toxic. > > Really UTF-8 and other Unicode derived encodings (such as GB18030 or UTF-16 > variants) are the only character sets that can be used universally without > constraining oneself to the 7-bit ASCII set. >
Here's where we disagree. Back before ISO Latin-1 and brethren, most *everything* actually used was 'extended' ASCII. Windows even called theirs 'ANSI' (also erroneous, but very true). But then, who used 'doze' (at least back then). Even the standard itself discusses possibilities of characters in an extended ASCII character set. You want to see complicated, check out the ways ASCII was supported on a PDP-8, and there was not only 'extended' but also 'stripped' ASCII! -- Richard PALO ------------------------------------------- illumos-discuss Archives: https://www.listbox.com/member/archive/182180/=now RSS Feed: https://www.listbox.com/member/archive/rss/182180/21175430-2e6923be Modify Your Subscription: https://www.listbox.com/member/?member_id=21175430&id_secret=21175430-6a77cda4 Powered by Listbox: http://www.listbox.com
