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Re: Error Message Feedback

From: Jukka K. Korpela <jkorpela@cs.tut.fi>
Date: Sun, 19 Sep 2004 21:19:14 +0300 (EEST)
To: Seguer of the Void <seguer_au@hotmail.com>
Cc: www-validator@w3.org
Message-ID: <Pine.GSO.4.58.0409192112330.25989@korppi.cs.tut.fi>

On Sun, 19 Sep 2004, Seguer of the Void wrote:

> Line 95, column 5: end tag for element "P" which is not open
- -
> <p>
> <div class="stats">
> 	<a class="header">Total: </a><a>34</a><br />
> 	<a class="header">Allows: </a><a>30</a><br />
> 	<a class="header">Blocks: </a><a>4</a><br />
> </div>
> </p>

By HTML syntax, a <p> element may contain only text-level (inline)
elements, not block elements like <div>. Thus, when validating against
HTML 4.01 document type, a validator implies, by HTML rules, an end tag
</p> when a <p> element has been opened but not closed and a <div> tag is
encountered. That is, <div> implicitly terminates an open <p> element.
And this makes the </p> tag homeless.

On the other hand, getting this message suggests that you are validating
against HTML 4.01 (or something similar), but you are using <br /> as in
XHTML. Although this mostly works on browsers, it tends to cause problems
in validation in many situations.

If you used an XHTML doctype, then the validator would report a missing
</p> tag when it encounters the <div> tag, since in XHTML no end tag
omission is allowed.

(I don't mean you should use XHTML; actually I think nobody should use
XHTML unless he really knows what he is doing _and_ has a practical reason
to use XHTML. But my main point is that mixing old HTML and XHTML in the
same document will lead you into confusion, sooner or later.)

-- 
Jukka "Yucca" Korpela, http://www.cs.tut.fi/~jkorpela/
Received on Sunday, 19 September 2004 18:19:48 GMT

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