Re: Character encoding (was Re: RSS 1.1)

Sean B. Palmer wrote:

>>If you use US-ASCII but label it as UTF-8 it will work, since the 
>>UTF-8 encoding for all characters catered for by US-ASCII is 
>>identical to the US-ASCII encoding.
>>    
>>
>
>Right. I think that this is clear in the RSS 1.1 specification, but
>we're going to try to make it clearer anyway.
>  
>
The codepoints are the same if you only use US-ASCII characters. 
US-ASCII characters are included in most commonly used encodings, 
nevertheless the specification should be clear on whether or not other 
encodings are allowed.

>>I don't recommend UTF32 for bytes-on-the-wire and saying one SHOULD 
>>output in UTF-8 or UTF-16 (and perhaps informally recommending 
>>UTF-8), MUST accept UTF-8 and UTF-16 and MAY use other encodings as 
>>per the XML rules for doing so would be consistent with C018.
>>    
>>
>
>Yes, this is based on a misreading of C018, as Bjoern Hoehrmann has
>already pointed out, and will be fixed in the next draft. We'll be
>requiring UTF-8 as the encoding, the same as RSS 1.0, and trying to make
>the section on US-ASCII clearer.
>  
>
RSS 1.0 does not require UTF-8 encoding, nor should it. In fact the RSS 
1.0 specification indicates that UTF-8 is the default, but other 
encodings can be specified, and specifies that the XML declaration is 
mandatory if another encoding is used:

/Syntax:/ <?xml version="1.0"?>
/Requirement:/ Optional (unless specifying encoding)

-- 
Klaus Johannes Rusch
[email protected]
http://www.atmedia.net/KlausRusch/



 
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