[MLton] Bug: TextPrimIO does not distinguish between EOF and no data

[Ville Laurikari]

On Wed, Dec 12, 2007 at 11:49:31PM +0200, Vesa Karvonen wrote:
> The problem seems to be that the canInput implementation in
> basis-library/io/imperative-io.fun does not distinguish between
> readArrNB returning NONE (means: eof not seen, any read will block)
> and SOME 0 (means: eof seen and at eof).
>
> Below is a patch that seems to fix the problem.  With the patch, I get

Your patch works for me too, with both bug.sml and my real program.  I
suggest you commit it.  The logic in canInput after your patch seems
correct to me.

--
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