[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:  (none)
     Type:  defect (bug)                |      Status:  new
 Priority:  normal                      |   Milestone:  Awaiting Review
Component:  Feeds                       |     Version:  3.3.1
 Severity:  normal                      |  Resolution:
 Keywords:  has-patch needs-unit-tests  |     Focuses:
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Comment (by abcd95):

 I'd like to propose an alternate solution for this. Instead of creating a
 new `strip_for_xml()` function, I believe updating the existing
 `esc_xml()` function would be more appropriate.

 The current `esc_xml()` function handles XML escaping but doesn't strip
 invalid XML characters. My patch enhances this function by stripping these
 characters according to the XML spec. It is also the **refreshed** version
 of the current fix in the context of the current codebase.

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Ticket URL: <https://core.trac.wordpress.org/ticket/19998#comment:18>
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