Ugh... EOF handling by scanf was completely broken. :-( Regretably,

Ugh... EOF handling by scanf was completely broken.  :-(  Regretably,
I got my mind fixed in one mode and didn't comply with the standards.
Things should be fixed now, but comparision testing is difficult when
glibc's scanf is broken and they stubbornly refuse to even acknowledge
that it is... even when confronted by specific examples from the C99
standards and from an official C standard defect report.