[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:  Awaiting Triage
Component:  General       |     Version:                 
 Severity:  normal        |    Keywords:                 
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Comment(by ntm):

 This enhancement is very important e.g. for plugin developers. There are a
 lot of threads in the WP.org forum which are related to the WP message
 "The plugin generated ... characters of unexpected output during
 activation. If you notice “headers already sent” messages, problems with
 syndication feeds or other issues, try deactivating or removing this
 plugin." and often these threads stay unresolved.

 It is good to know that there is something wrong e.g. during the plugin
 activation but it would definitely be better know what is wrong.

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Ticket URL: <http://core.trac.wordpress.org/ticket/12254#comment:6>
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