From: Bihal <wmioch@...>
Date: 2006-04-10T15:06:27+09:00
Subject: Ruby Grammar - "do"

Hey everyone

I work for a software development company that is currently writing an 
in-house grammar for parsing Ruby. I've been frustrated by it many, 
many, many times. Maybe it's easy to program in, but it's a nightmare to 
parse.

My particular question (right now :P) is in reference to the do keyword. 
I was sure that if there was a "do" eg.

expression.each do | [
            name
            ]+
             |
  body
end

there would be an "end". But now I've run into this particular example.

def _tags
   rv = [
   "title",
   "link",
   "description",
   "language",
   "copyright",
   "managingEditor",
   "webMaster",
   "rating",
   "docs",
   "skipDays",
   "skipHours",
   "image",
   "textInput",
   "cloud",
   ].delete_if do |x|
      send(x).nil?
   end.collect do |elem|
      [nil, elem]
   end

   @item.each do
      rv << [nil, "item"]
   end
   rv
end


Can someone please enlighten me as to why this particular do is special?

Bihal

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