PO::unpoify( string $input_string ): string

136		public static function unpoify( $input_string ) {137			$escapes               = array(138				't'  => "\t",139				'n'  => "\n",140				'r'  => "\r",141				'\\' => '\\',142			);143			$lines                 = array_map( 'trim', explode( "\n", $input_string ) );144			$lines                 = array_map( array( 'PO', 'trim_quotes' ), $lines );145			$unpoified             = '';146			$previous_is_backslash = false;147			foreach ( $lines as $line ) {148				preg_match_all( '/./u', $line, $chars );149				$chars = $chars[0];150				foreach ( $chars as $char ) {151					if ( ! $previous_is_backslash ) {152						if ( '\\' === $char ) {153							$previous_is_backslash = true;154						} else {155							$unpoified .= $char;156						}157					} else {158						$previous_is_backslash = false;159						$unpoified            .= $escapes[ $char ] ?? $char;160					}161				}162			}163 164			// Standardize the line endings on imported content, technically PO files shouldn't contain \r.165			$unpoified = str_replace( array( "\r\n", "\r" ), "\n", $unpoified );166 167			return $unpoified;168		}