From: Brian Candler <B.Candler@...>
Date: 2008-12-05T18:02:00+09:00
Subject: [ruby-core:20364] Re: [Bug #822] gets blocks when it shouldn't

On Fri, Dec 05, 2008 at 10:40:56AM +0900, Nobuyoshi Nakada wrote:
> > And also mention that such a sequence is replaced with two
> > newlines?
> 
> It is "dropped" rather than "replaced".
> 
> How do you think this?
..
> + *  a time (two successive newlines in the input separate paragraphs,
> + *  and following successive newlines are dropped).

Better, but now it doesn't say that preceding newlines are dropped.

r,w = IO.pipe
w.write("\n\n\n\n\nsome text\n\n\n\n\nmore text\n\n\n\n\nabc\n")
puts r.gets("").inspect
puts r.gets("").inspect
puts r.gets.inspect

Outputs:

"some text\n\n"
"more text\n\n"
"abc\n"

I'm not sure how best to describe this, except algorithmically:

When reading a 'paragraph':
* any initial newlines are discarded
* data is read up to and including two successive newlines
* any subsequent newlines are discarded
* the read data is returned