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Hide repeater styrle fields following the pattern ..._0_... from indexing in ElasticPress
add_filter( 'ep_prepare_meta_data', function( $meta ) { 
foreach( $meta as $key => $value ) {
if ( preg_match( '/.+_([0-9]+)_.+/', $key ) ) {
unset( $meta[$key] );
}
}
return $meta;
} );
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