Re: UTF-8 in strings - a bug?

["Björn Persson" <spam-away@nowhere.nil>]

Jacob Sparre Andersen wrote:

> Your quotes (which may be unfair :-)

Sorry, I should have provided more context. Here's the relevant part of 
unicode/unicode.ads in XML/Ada version 1.0 from ACT-Europe, so you don't 
have to download the library just to see what I'm talking about:


--  Coded character sets  (packages Unicode.CCS.*)
--  ====================
--  Mapping from a set of abstract characters to the set of non-negative
--  integers
--  The integer associated with a character is called "code point", and the
--  character is called "encoded character"
--  Examples of these are:  ISO/8859-1, JIS X 0208, ...
--
--  Character naming (packages Unicode.Names.*)
--  ================
--  A unique name is assigned to each abstract character, so that it is
--  possible to get the same character no matter what repertoire is used.
--
--  Character Encoding Forms
--  ========================
--  Mapping from the set of integers used in a Coded Character Set to 
the set
--  of sequences of code units.
--  A "code unit" is integer occupying a specified binary width in a 
computer
--  architecture
--  Examples of fixed-width encoding forms:  7-bit, 8-bit, EBCDIC
--  Examples of variable-width encoding forms:  Utf-8, Utf-16,...
--
--  Character Encoding Scheme (packages Unicode.CES.*)
--  =========================
--  Mapping of code units into serialized byte sequences. It also takes into
--  account the byte-order serialization.

--  As a summary, converting a file containing latin-1 characters coded on
--  8 bits to a Utf8 latin2 file, the following steps are involved:
--
--     Latin1 string  (contains bytes associated with code points in Latin1)
--       |    "use Unicode.CES.Basic_8bit.To_Utf32"
--       v
--     Utf32 latin1 string (contains code points in Latin1)
--       |    "Convert argument to To_Utf32 should be
--       v         Unicode.CCS.Iso_8859_1.Convert"
--     Utf32 Unicode string (contains code points in Unicode)
--       |    "use Unicode.CES.Utf8.From_Utf32"
--       v
--     Utf8 Unicode string (contains code points in Unicode)
--       |    "Convert argument to From_Utf32 should be
--       v         Unicode.CCS.Iso_8859_2.Convert"
--     Utf8 Latin2 string (contains code points in Latin2)


Investigating furter, I see that docs/xml_2.html shows the exact same 
example of converting Latin-1 to "Utf8 Latin2".

-- 
Björn Persson

jor ers @sv ge.
b n_p son eri nu