[Webkit-unassigned] [Bug 31464] Wrong html in view source after receiving the following html

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=31464


Daniel Bates <dbates at webkit.org> changed:

           What    |Removed                     |Added
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                 CC|                            |dbates at webkit.org




--- Comment #3 from Daniel Bates <dbates at webkit.org>  2009-11-25 23:02:51 PST ---
Marius,

The snippet you provided is not valid HTML (checked against the HTML 4.01 spec
<http://www.w3.org/TR/html4>).

In particular, a <form> (which is a block-level element) cannot be nested
inside a <span> (which is an inline element). Hence, we close the <span> (i.e.
</span>) (*) before the <form> element, which is what you see in the inspector.
Notice, <p> is an inline element, see
<http://www.w3.org/TR/html4/struct/text.html#h-9.3.1>. So, it cannot contain a
block-level element (**). Because of (*), <p> now contains the <form>, but by
(**) this is not valid. So, we close the <p> (&) (i.e. </p>) before the <form>.
Therefore the resulting HTML structure has the form:

<div>
<p>
  <span>
  <span>
    <br>
  </span>
  <a>
  <br>
  <span>
</p>
<form>
<p> (&&)

(&&) I believe this extra <p> is a result of us trying to figure out what the
user may have intended. When we do (&) we also add a <p> after the <form>.

See Section 7.5.3 of the HTML 4.01 spec
<http://www.w3.org/TR/html4/struct/global.html#h-7.5.3> regarding the
distinction between block-level and inline elements.

(In reply to comment #2)
> I'm sorry I expressed myself poorly. I rechecked my steps and it seems that
> view source does show html corectly, but web inspector (option + command + c)
> shows it wrong. 
> 
> You can also notice from the first look on the html that the form is visible
> when it shouldn't be as it's nested inside the span with display:none. 
> 
> 
> To test, just copy / paste the html code into a file and open in it in the
> browser. (adding maybe correct html header etc)

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