From: Michael Edgar <adgar@...>
Date: 2011-06-09T20:14:55+09:00
Subject: [ruby-core:36888] Re: [Ruby 1.9 - Feature #4830] Provide Default Variables for Array#each and other iterators

On Jun 9, 2011, at 6:54 AM, Lazaridis Ilias wrote:

> * existent code behaves exactly the same
> * only if existent code is changed to use defaults, care must be take to not shadow local variables (should be very rare that an "accident" happens)


You seem to have discovered that it's "very rare" that Ruby code would
ever occur in this form:

item = expr_1
...
list.each { bar(item) }  # or any local variable reference

You will have to provide evidence that this is "very rare" because your proposed
change will likely break all such code. Your choice of identifier has
enormous ramifications as a result. Simple waving this away as "should
be very rare" is not comforting to people who actually write Ruby.

Michael Edgar
adgar@carboni.ca
http://carboni.ca/