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@@ -12,7 +12,7 @@ var Form = {
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     var data = elements.inject({ }, function(result, element) {
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       if (!element.disabled && element.name) {
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         key = element.name; value = $(element).getValue();
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-        if (value != null && (element.type != 'submit' || (!submitted &&
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+        if (value != null && element.type != 'file' && (element.type != 'submit' || (!submitted &&
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             submit !== false && (!submit || key == submit) && (submitted = true)))) { 
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           if (key in result) {
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             // a key is already present; construct an array of values

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@@ -79,6 +79,10 @@
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   <input type="text" />
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 </form>
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+<form id="form_with_file_input">
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+  <input type="file" name="file_name" value="foo" />
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+</form>
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+
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 <!-- tabindexed forms -->
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 <div id="tabindex">
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   <form id="ffe">

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@@ -271,7 +271,9 @@ new Test.Unit.Runner({
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                     $('form').serialize({ submit: false }));
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     this.assertHashEqual({ val1:4, action:'blah' },
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                     $('form').serialize({ submit: 'inexistent' }));
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-                    
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+
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+    // file input should not be serialized  
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+    this.assertEqual('', $('form_with_file_input').serialize());   
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   },
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   testFormMethodsOnExtendedElements: function() {