#define PG_OS_CODING FORMAT_FILENAME
#define TO_EXTERNAL_FORMAT(a,from,b,to,c) GET_C_STRING_EXT_DATA_ALLOCA(from,FORMAT_FILENAME,to)
#else
#define PG_OS_CODING FORMAT_FILENAME
#define TO_EXTERNAL_FORMAT(a,from,b,to,c) GET_C_STRING_EXT_DATA_ALLOCA(from,FORMAT_FILENAME,to)
#else