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From: Florian Weimer <someone@deneb.cygnus.argh.org>
Subject: Re: Announce: OpenToken 2.0 released
Date: 2000/02/07
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Hyman Rosen <hymie@prolifics.com> writes:

> No. It's only in-band if on those platforms, input characters do in fact
> range over the full set of representable values of a char. Just because
> the compiler internally represents char with the same range as int does
> not mean that stream input is reading objects of that range from its
> sources. Input could be octets, or 16-bit unicode chars, or 32-bit other
> representation of input.

You are right for text files.  For binary files, there has to be
a bijection between the internal and external representation of
characters.  This means that the value EOF can occur in a binary stream
if sizeof(char) equals sizeof(int).