From: Peter Zotov <whitequark@...>
Date: 2011-03-01T21:28:59+09:00
Subject: Re: Automatic question generator libs in Ruby Language

 On Tue, 1 Mar 2011 20:02:13 +0900, Adam Prescott wrote:
>
> This could be a long rabbit hole.
>

 Well, you've started this. Now I shall show you what a rabbit hole is 
 ;)

 #encoding:utf-8
 # requires 1.9

 QUESTION_REGEXP = Regexp.compile(<<'END'.strip, Regexp::EXTENDED | 
 Regexp::MULTILINE)
 (?<mstc>\g<inf>[!?.]?\s*){0}(?<stc>\g<inf>[!?.]\s*){0}(?<text>[^!.?']+?){0}
 (?<inf>(?<pq>["'])\g<mstc>\k<pq+0>\g<inf>|束\g<mstc>損\g<inf>|\g<text>\g<inf>|){0}
 \g<stc>
 END

 def questions(para)
   questions = []
   while para =~ QUESTION_REGEXP
     para = $'
     questions << $& if $&.strip[-1] == ??
   end
   questions
 end

 TEXT = <<'END'
 Nested 'questions?' are supported.
 This is a text. A question?
 This 束kind?損 is supported too, really?
 The quotes 束"shall 'be" matching?'損?
 END

 p questions(TEXT)

-- 
   WBR, Peter Zotov.

 P.S. You definitely should run the code on a real ruby. It is 
 somehow... curious.