[wp-trac] [WordPress Trac] #11738: sanitize_text_field() issue with UTF-8 characters

[WordPress Trac]

#11738: sanitize_text_field() issue with UTF-8 characters
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 Reporter:  hakre         |       Owner:             
     Type:  defect (bug)  |      Status:  new        
 Priority:  normal        |   Milestone:  2.9.2      
Component:  General       |     Version:  2.9.1      
 Severity:  normal        |    Keywords:  needs-patch
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Comment(by hakre):

 Replying to [comment:2 westi]:
 > Also you assume that the string is UTF8 by using the "u" modifier what
 about people using a different charset?
 I suggested in the other ticket to check the encoding prior to apply the
 replace operation on it. we have a seems_utf8() function that could do the
 job and I referenced more code that even does the job properly to validate
 if input is properly utf8 encoded. For any other encoding, we can handle
 it as we did: just with a best guess and a preg_replace w/o the
 u-modifier.

 Please do not read that I want to speak against other encodings, but
 factually it's not taken much care about input encoding in the wp
 codebase.

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Ticket URL: <http://core.trac.wordpress.org/ticket/11738#comment:4>
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