On Tue, 22 Jun 1999 22:43:21 +0900 (JST) 
 Noriyuki Soda <soda@sra.co.jp> wrote:

 > Both ISO-C standard Ammendment.1 and proposed C99 DIS says that if a
 > user requests, FILE includes the current parse state which represents
 > multibyte character to wide character translation state,

Well... you can cheat, here :-)

Since the internal members of FILE aren't available to users, you don't
*have* to keep this info *directly* in FILE.  It would be another structure
logically associated with a given instance of a FILE.  You could reference
these other structures in a hash table, using a FILE * as a value to hash
for the lookup.

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>