Source

File: wp-includes/pomo/mo.php

function export_original( $entry ) {
			// TODO: Warnings for control characters.
			$exported = $entry->singular;
			if ( $entry->is_plural ) {
				$exported .= "\0" . $entry->plural;
			}
			if ( $entry->context ) {
				$exported = $entry->context . "\4" . $exported;
			}
			return $exported;
		}