[wp-trac] [WordPress Trac] #5998: Invalid Unicode characters

[WordPress Trac]

#5998: Invalid Unicode characters
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 Reporter:  shelleyp      |       Owner:  hakre      
     Type:  defect (bug)  |      Status:  assigned   
 Priority:  normal        |   Milestone:  3.0        
Component:  Charset       |     Version:  2.3.3      
 Severity:  critical      |    Keywords:  needs-patch
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Comment(by Denis-de-Bernardy):

 per remark in a separate ticket, is_valid_utf8_preg5998 has a problem with
 its regex. it's missing a delimiter and it could use (?: instead of ( in
 order to reduce backtracing.

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Ticket URL: <http://core.trac.wordpress.org/ticket/5998#comment:22>
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