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https://issues.apache.org/jira/browse/MYFACES-4638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17784108#comment-17784108
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Werner Punz commented on MYFACES-4638:
--------------------------------------
Fixed
> Inputs submitted by AJAX loose all content beginning with ampersand ("&")
> characters
> ------------------------------------------------------------------------------------
>
> Key: MYFACES-4638
> URL: https://issues.apache.org/jira/browse/MYFACES-4638
> Project: MyFaces Core
> Issue Type: Bug
> Affects Versions: 4.0.0, 5.0.0
> Reporter: Andreas Osterburg
> Assignee: Werner Punz
> Priority: Major
> Fix For: 4.0.2, 4.1.0, 5.0.0
>
> Attachments: patch-FileUtils.txt, test.xhtml
>
>
> When submitting input fields with AJAX the ampersand "&" character is not
> handled properly on client side.
> A test case ist attached. Just submitting the form works as expected,
> submitting by AJAX
> fails if input contains "&"-signs, like "foo&bar".
> It tracked this down to the function _decodeEncodedValues_ in
> {_}FileUtils.ts{_}. There happens a
> decode of the current ViewState in URI-encoded format.
> Basically the source of the issue is that the input string (in
> "{_}encoded"){_} is processed in wrong order.
> Currently it is first URI-decoded an then splitted by ampersands ("&"). It
> has to be in
> reverse order, since the payload may contain ampersands, which are
> URI-encoded by "%26".
> A small working patch for demonstration is attached.
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