From: Oliver Saunders <oliver.saunders@...>
Date: 2009-07-08T22:04:05+09:00
Subject: Accept sh heredocs to Ruby script

In sh, you can do this:

$ cat <<donenow
> i
> like
> jam
> donenow
i
like
jam
$

This suggests to me that cat should receive a temporary file as a result
of the heredoc that it can then display similar to the <() construct:

$ cat <(echo 'pie')
pie
$ echo <(echo 'pie')
/dev/fd/63

So I created a Ruby script called args_test.rb that looks like this:

#!/usr/bin/env ruby
p ARGV

Here it is run with a <() construct.

$  ./args_test.rb <(echo 'pie')
["/dev/fd/63"]

All good. But with heredoc you get this:

$ ./args_test.rb <<donenow
> i
> like
> jam
> donenow
[]

Can anyone explain this?
I tried this in Io with the same results.
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