> I just checked SUSv3.  It says nothing particularly useful.

> "For a filename to be portable across implementations conforming to
>  IEEE Std 1003.1-2001, it shall consist only of the portable filename
>  character set as defined in Portable Filename Character Set.

That's very interesting information.  But it makes me ask, does the SUS
specify any particular encoding scheme for converting those characters
into addressing units, or is the encoding left unspecified?

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