NAME
   RT::Extension::MergeUsers - Merges two users into the same effective
   user

DESCRIPTION
   This RT extension adds a "Merge Users" box to the User Administration
   page, which allows you to merge the user you are currently viewing with
   another user on your RT instance.

   It also adds "MergeInto" and "UnMerge" functions to the RT::User class,
   which allow you to programmatically accomplish the same thing from your
   code.

   It also provides a version of CanonicalizeEmailAddress, which means that
   all e-mail sent from secondary users is displayed as coming from the
   primary user.

 RT::Shredder and Merged Users
   Merging a user effectively makes it impossible to load the merged user
   directly. Attempting to access the old user resolves to the merged-into
   user. Because of this, MergeUsers has some extra code to help
   RT::Shredder clean up these merged records to avoid leaving merged user
   records in the DB while removing the user they were merged into.

   When running RT::Shredder on a user record with other users merged into
   it, the merged users are Unmerged before the initial user record is
   shredded. There are two options to handle these newly unmerged users:

   1.  Re-run your shredder command with the same or similar options. The
       unmerged user records will now be accessible and, depending on your
       shredder options, they will likely be shredded on the second run. If
       you have multiple layers of merged users, you may need to run
       shredder multiple times.

   2.  MergeUsers will log the unmerged users at the "info" level so you
       can pull the user ids from the log and shred them manually. This is
       most likely to be useful if you are shredding one specific user (and
       all merged accounts).

INSTALLATION
   Be sure to also read "UPGRADING" if you are upgrading.

   "perl Makefile.PL"
   "make"
   "make install"
       May need root permissions

   Edit your /opt/rt4/etc/RT_SiteConfig.pm
       If you are using RT 4.2 or greater, add this line:

           Plugin('RT::Extension::MergeUsers');

       For RT 4.0, add this line:

           Set(@Plugins, qw(RT::Extension::MergeUsers));

       or add "RT::Extension::MergeUsers" to your existing @Plugins line.

   Clear your mason cache
           rm -rf /opt/rt4/var/mason_data/obj

   Restart your webserver

UPGRADING
   If you are upgrading from 0.03_01 or earlier, you must run
   bin/rt-update-merged-users. This script will create MergedUsers
   Attributes so RT can know when you're looking at a user that other users
   have been merged into. If you don't run this script, you'll have issues
   unmerging users. It can be safely run multiple times, it will only
   create Attributes as needed.

UTILITIES
 rt-clean-merged-users
   When a user with another user merged into it is shredded, the attributes
   on that user are also shredded, but the merged user will remain, along
   with attributes that may point to the now missing user id. This script
   cleans up attributes if the merged-into user record is now gone. These
   users will then be converted back to regular unmerged users.

 Next
   This custom iterator makes sure that duplicate users are never shown in
   search results.

AUTHOR
   Alex Vandiver <[email protected]>

LICENSE
   GPL version 2.

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