[wp-trac] [WordPress Trac] #12254: Move show_message() into WP_Error class and add support for various WP_Error features that are missing

[WordPress Trac]

#12254: Move show_message() into WP_Error class and add support for various
WP_Error features that are missing
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 Reporter:  jeremyclarke  |       Owner:  jeremyclarke
     Type:  enhancement   |      Status:  new         
 Priority:  normal        |   Milestone:  3.0         
Component:  General       |     Version:              
 Severity:  normal        |    Keywords:              
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Comment(by nacin):

 I'd decouple this from show_message(). Its only purpose is to echo out
 messages for the upgraders.

 The only issue is that it's missing code to then flush the message while
 the upgrade process continues (which is the whole point of having it), but
 that is to be handled elsewhere.

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Ticket URL: <http://core.trac.wordpress.org/ticket/12254#comment:2>
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