From: Daniel Brumbaugh Keeney <devi.webmaster@...>
Date: 2007-11-21T06:17:41+09:00
Subject: Re: Why does IO.readlines() keep newlines?

On Nov 20, 2007 2:53 AM, Xavier Noria <fxn@hashref.com> wrote:
> On Nov 20, 2007, at 12:43 AM, Daniel Brumbaugh Keeney wrote:
>
> > I'm going to speculate that readlines does this because of operating
> > system differences in line endings.
> > For compatibility between most systems, it would have to remove line
> > feeds (\x0A) or line-feed/carriage return combinations (\x0D\x0A).
>
> Indeed that's not the case.
>
> In CRLF platforms the I/O layer handles newlines in text mode so that
> the programmer *always* works with "\n", no CRLF ever goes up on
> Windows. Nor you need to print CRLFs by hand at the Ruby level. At the
> Ruby level a newline is always == "\n" and has always length 1.
> -- fxn

Unfortunately, files created on one platform inevitably make their way
to another. When an IO with \r\n is read on a UNIX, it preserves the
carriage return.

Daniel Brumbaugh Keeney