[net.emacs] CCA Emacs Shell Buffer Fix

joe@cca.UUCP (Joseph Chapman) (01/04/85)

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> Under normal circumstances, the infinite loop you describe should never
> happen.  If this really is a problem, then some code should be put in
> getchar() so that it doesn't call error() if it is being invoked by
> error().  But the fix that was posted is definitely the wrong thing to
> do.  The call to error() in fflush is important, as there are a number
> of legitimate reasons for the write to fail, and the user needs to be
> notified about them.  For example, if the disk fills up, the old code
> would warn the user with a message telling him exactly what happened.
> The code represented by the fix would be silent, and the user would get
> the disastrously mistaken impression that his file was written
> correctly.  For these reasons, I strongly recommend against installing
> the first part of the fix that was posted.

Yes, that is true; mea culpa, mea maxima culpa.  I included it because
the infinite loop I described actually did occur under what I took to be
normal circumstances.  I suppose I should have posted a less complacent
fix; until I or someone else comes up with one the question of which is
the more ominous possibility, ringing bells or bit-buckets, is best left
to the reader.  I intend to take Steve Zimmerman's advice...

Joe Chapman