[wp-trac] [WordPress Trac] #33413: most PHP classes should be in their own file

[WordPress Trac]

#33413: most PHP classes should be in their own file
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 Reporter:  wonderboymusic  |       Owner:  wonderboymusic
     Type:  enhancement     |      Status:  reopened
 Priority:  normal          |   Milestone:  4.4
Component:  General         |     Version:  trunk
 Severity:  normal          |  Resolution:
 Keywords:  dev-feedback    |     Focuses:
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Comment (by builtbynorthby):

 iiuc, if the user updates to WP 4.4 **before** updating their plugins, and
 if they have an active plugin, or theme, or custom code that extends
 Walker_Category_Checklist, where it previously ''just worked'' to require
 template.php [like in this example], then they will get a fatal error when
 they try to load up the WP admin.

 @nerrad if you push your simple fix and release an update to your plugin
 right now, a percentage of users will not update the plugin before they
 update WP to 4.4. Won't that put some users in a tough spot when they get
 a fatal error right after they update to 4.4?

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Ticket URL: <https://core.trac.wordpress.org/ticket/33413#comment:126>
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