[wp-trac] [WordPress Trac] #19998: Feeds can contain characters that are not valid XML

[WordPress Trac]

#19998: Feeds can contain characters that are not valid XML
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 Reporter:  westi         |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Feeds         |    Version:  3.3.1
 Severity:  normal        |   Keywords:  needs-patch
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 It is possible for any of the feeds to contain control characters which
 are not valid in XML e.g.
 http://www.fileformat.info/info/unicode/char/1c/index.htm

 When outputting user supplied content in an XML context we should strip
 these control characters - they are unprintable and just break feed
 parsers.

 http://en.wikipedia.org/wiki/Valid_characters_in_XML has a good list of
 what is and isn't valid.

 I guess we need a {{{strip_for_xml()}}} function or something.

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Ticket URL: <http://core.trac.wordpress.org/ticket/19998>
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