is, they require this function to act as if it reads end-of-file if
@code{feof} would return nonzero. However, on some systems this
function attempts to read from the underlying file descriptor even if
is, they require this function to act as if it reads end-of-file if
@code{feof} would return nonzero. However, on some systems this
function attempts to read from the underlying file descriptor even if