--- /dev/null
+%# BEGIN BPS TAGGED BLOCK {{{
+%#
+%# COPYRIGHT:
+%#
+%# This software is Copyright (c) 1996-2012 Best Practical Solutions, LLC
+%# <sales@bestpractical.com>
+%#
+%# (Except where explicitly superseded by other copyright notices)
+%#
+%#
+%# LICENSE:
+%#
+%# This work is made available to you under the terms of Version 2 of
+%# the GNU General Public License. A copy of that license should have
+%# been provided with this software, but in any event can be snarfed
+%# from www.gnu.org.
+%#
+%# This work is distributed in the hope that it will be useful, but
+%# WITHOUT ANY WARRANTY; without even the implied warranty of
+%# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+%# General Public License for more details.
+%#
+%# You should have received a copy of the GNU General Public License
+%# along with this program; if not, write to the Free Software
+%# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+%# 02110-1301 or visit their web page on the internet at
+%# http://www.gnu.org/licenses/old-licenses/gpl-2.0.html.
+%#
+%#
+%# CONTRIBUTION SUBMISSION POLICY:
+%#
+%# (The following paragraph is not intended to limit the rights granted
+%# to you to modify and distribute this software under the terms of
+%# the GNU General Public License and is only of importance to you if
+%# you choose to contribute your changes and enhancements to the
+%# community by submitting them to Best Practical Solutions, LLC.)
+%#
+%# By intentionally submitting any modifications, corrections or
+%# derivatives to this work, or any other work intended for use with
+%# Request Tracker, to Best Practical Solutions, LLC, you confirm that
+%# you are the copyright holder for those contributions and you grant
+%# Best Practical Solutions, LLC a nonexclusive, worldwide, irrevocable,
+%# royalty-free, perpetual, license to use, copy, create derivative
+%# works based on those contributions, and sublicense and distribute
+%# those contributions and any derivatives thereof.
+%#
+%# END BPS TAGGED BLOCK }}}
+% $r->content_type('application/json');
+<% JSON( \@suggestions ) |n %>
+% $m->abort;
+<%ARGS>
+$return => ''
+$term => undef
+$delim => undef
+$max => 10
+$privileged => undef
+$exclude => ''
+$op => undef
+</%ARGS>
+<%INIT>
+# Only allow certain return fields
+$return = 'EmailAddress'
+ unless $return =~ /^(?:EmailAddress|Name|RealName)$/;
+
+$m->abort unless defined $return
+ and defined $term
+ and length $term;
+
+# Use our delimeter if we have one
+if ( defined $delim and length $delim ) {
+ if ( $delim eq ',' ) {
+ $delim = qr/,\s*/;
+ } else {
+ $delim = qr/\Q$delim\E/;
+ }
+
+ # If the field handles multiple values, pop the last one off
+ $term = (split $delim, $term)[-1] if $term =~ $delim;
+}
+
+my $CurrentUser = $session{'CurrentUser'};
+
+# Require privileged users or overriding config
+$m->abort unless $CurrentUser->Privileged
+ or RT->Config->Get('AllowUserAutocompleteForUnprivileged');
+
+my %fields = %{ RT->Config->Get('UserAutocompleteFields')
+ || { EmailAddress => 1, Name => 1, RealName => 'LIKE' } };
+
+# If an operator is provided, check against only the returned field
+# using that operator
+%fields = ( $return => $op ) if $op;
+
+my $users = RT::Users->new( $CurrentUser );
+$users->RowsPerPage( $max );
+
+$users->LimitToPrivileged() if $privileged;
+
+while (my ($name, $op) = each %fields) {
+ $op = 'STARTSWITH'
+ unless $op =~ /^(?:LIKE|(?:START|END)SWITH|=|!=)$/i;
+
+ $users->Limit(
+ FIELD => $name,
+ OPERATOR => $op,
+ VALUE => $term,
+ ENTRYAGGREGATOR => 'OR',
+ SUBCLAUSE => 'autocomplete',
+ );
+}
+
+# Exclude users we don't want
+foreach (split /\s*,\s*/, $exclude) {
+ $users->Limit(FIELD => 'id', VALUE => $_, OPERATOR => '!=');
+}
+
+my @suggestions;
+
+while ( my $user = $users->Next ) {
+ next if $user->id == RT->SystemUser->id
+ or $user->id == RT->Nobody->id;
+
+ my $formatted = $m->scomp('/Elements/ShowUser', User => $user, NoEscape => 1);
+ $formatted =~ s/\n//g;
+ my $suggestion = { label => $formatted, value => $user->$return };
+ $m->callback( CallbackName => "ModifySuggestion", suggestion => $suggestion, user => $user );
+ push @suggestions, $suggestion;
+}
+
+</%INIT>