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Re: Encoding and validation

From: Laurent Carcone <carcone@w3.org>
Date: Wed, 20 Jan 2010 14:16:37 +0100
Message-ID: <4B570235.5020805@w3.org>
To: "amaya-doc@s-g-b-online.de" <amaya-doc@s-g-b-online.de>
CC: www-amaya@w3.org
amaya-doc@s-g-b-online.de wrote:
> Hi Bill,
> many background information you find in Article "Setting encoding in 
> web authoring applications" 
> <http://www.w3.org/International/questions/qa-setting-encoding-in-applications>.
> "...
> W3C Amaya (Mac, Unix, Windows)
> When saving the file, go to File > Save as. Amaya will make sure that 
> the encoding is correct in the XML declaration (for XHTML) and the 
> meta statement. Amaya also uses the appropriate encoding (charset) in 
> the HTTP headers when it saves a document remotely using PUT. Amaya 
> also understands several other encodings when loading a document, but 
> is not able to save in any of these.

Just to be clear, if you "Save As" a document in Amaya and change the 
'Charset' information, Amaya not only change the xml declaration and the 
meta tag but encode all the characters accordingly.

Laurent Carcone

> ..."
> For more information in article "Changing (X)HTML page encoding to 
> UTF-8" 
> <http://www.w3.org/International/questions/qa-changing-encoding.en.php?changelang=en>
> Hope I could help you.
> In this way "Thanks" for these (and other) article to Phil Arko and 
> Richard Ishida
> Greetings, Jörg
> Bill Braun schrieb:
>> Dominique Meeùs wrote:
>>> There are two related problems to be considered separately.
>>> 1. You have to choose a "physical" encoding: the different 
>>> characters have to be inscribed on the digital medium as a definite 
>>> succession of bits, forming bytes, like utf-8 or iso-suchandsuch… 
>>> This is usually obtained by an option under File/Save as… or another 
>>> appropriate command
>>> 2. Most languages, protocols… ask you to declare the encoding so 
>>> chosen. This is some doctype or charset="" declaration.
>>> Needless to say that 1 and 2 have to be in accordance. Declaring 
>>> utf-8 while you actually saved your document as Windows-1252 or some 
>>> other encoding of the middle ages is worse than declaring nothing. 
>>> Most software with a command to insert a declaration about encoding 
>>> do just this: declare, and only this. They do not convert the 
>>> "physical" encoding into another. (One exception: in Bluefish the 
>>> command Document/Encoding converts the encoding and inserts/corrects 
>>> the declaration if the encoding changes.)
>>> In conclusion, you have to mind 1 AND 2 accordingly.
>> I am suspicious, but do not know for sure, that I have indeed garbled 
>> these two together. Can I impose upon you to offer some specific 
>> steps in Amaya that would resolve mismatches that I might have committed?
>> This passes W# validation with no warning:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>>       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" <http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>>
>> <html xmlns="http://www.w3.org/1999/xhtml" <http://www.w3.org/1999/xhtml>>
>> <head>
>>     <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
>> </head>
>> This passes with a warning (as noted above):
>> <?xml version="1.0" encoding="iso-8859-1"?>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>>       "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" 
>> <http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>>
>> <html xmlns="http://www.w3.org/1999/xhtml" 
>> <http://www.w3.org/1999/xhtml>>
>> <head>
>>   <meta http-equiv="content-type" content="text/html; />
>> </head>
>> I'm aware I might just be taking another lap around the circle. As 
>> admitted earlier, I am out of my league here, so a step-by-step 
>> concrete reply would be appreciated.
>> Is it as simple as setting the encoding and charset to "UTF-8" and be 
>> done with it?
>> Regards and thank you,
>> Bill B
Received on Wednesday, 20 January 2010 13:17:12 UTC

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