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Multiple form tags gets nested

Status: New
Owner: ----

New issue 193 by he...@modondo.com: Multiple form tags gets nested
http://code.google.com/p/html5lib/issues/detail?id=193

What steps will reproduce the problem?

Parsing the following html5 document using

parser = html5lib.HTMLParser(tree=html5lib.treebuilders.getTreeBuilder("lxml"), namespaceHTMLElements=False)

soup = parser.parse(filedata)

print lxml.html.tostring(soup, encoding=unicode)

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"; lang="sv-se">
<head>
        <meta charset="utf-8"/>
        <title>HTML5 test</title>

</head>

<body>
    <form action="" method="get" class="selector">
        <select name="industry" id="industry" size="1" class="selector">
            <option value="">Industry</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>
    </form>

    <form action="" method="get" class="selector">

            <option value="">Application</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>
    </form>

    <form action="" method="get" class="selector">
        <select name="material" id="material" size="1" class="selector">
            <option value="">Material</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>
    </form>
</body>
</html>

============= What is the expected output? What do you see instead? ================

=========================== BECOMES ==============================
NOTICE THE NEDING </form> tags before the </body> tag

<!DOCTYPE html>
<html lang="sv-se" xmlns="http://www.w3.org/1999/xhtml";><head>
        <meta charset="utf-8">
        <title>HTML5 test</title>

</head>

<body>
    <form action="" class="selector" method="get">
        <select size="1" id="industry" name="industry" class="selector">
            <option value="">Industry</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>


    <form action="" class="selector" method="get">

            <option value="">Application</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>


    <form action="" class="selector" method="get">
        <select size="1" id="material" name="material" class="selector">
            <option value="">Material</option>
            <option value="option1">Item one</option>
            <option value="option1">Item two</option>
            <option value="option1">Item three</option>
        </select>


</form></form></form></body></html>

Please provide any additional information below.

I'm parsing the document with the lxml treebuilder and outputting with lxml.html.tostring() method. Somehow all the forms gets nested.

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