[wp-trac] [WordPress Trac] #24487: is_email() does not recognize IDN domains

[WordPress Trac]

#24487: is_email() does not recognize IDN domains
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 Reporter:  OlegCorner    |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Future Release
Component:  Formatting    |     Version:  3.5.1
 Severity:  minor         |  Resolution:
 Keywords:  has-patch     |
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Changes (by nacin):

 * milestone:  Awaiting Review => Future Release


Comment:

 Hi OlegCorner. We had quite a bit of "fun" with `\P{L}`, as it is possible
 to compile PCRE without Unicode support. See #22692. Not sure what to do
 here, though it does seem to be possible to check for this support with a
 separate check, then allow IDN domains through if so. Or, there might be
 another way to check for this.

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Ticket URL: <https://core.trac.wordpress.org/ticket/24487#comment:2>
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