rb_io_puts is strange

i just tracked down some incorrect behavior (missing newlines in the output)
in a Ruby script to the fact that there's some weird code in IO.puts; if the
string you're writing ends in '\n', puts behaves like print.

shouldn't

        if (RSTRING(line)->len == 0 ||
            RSTRING(line)->ptr[RSTRING(line)->len-1] != '\n') {
            rb_io_write(out, rb_default_rs);
        }

just be

        rb_io_write(out, rb_default_rs);

?

Java's print and println have an obvious, consistent relationship. Ruby's
print and puts don't.

 --elliott



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