From: Yui NARUSE <redmine@...>
Date: 2010-03-02T20:34:48+09:00
Subject: [ruby-core:28412] [Bug #1893] Recursive Enumerable#join is surprising

Issue #1893 has been updated by Yui NARUSE.


This is because:
* Enumerable#join is recursive
* If an element is String, add it
* If an element is Array, add elem.join
* If others, add obj.to_a.join or obj.to_s

When an element is Enumerator, it classed as "others";
["foo".chars] will be '["a", "b", "c"]' by your suggestion.
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http://redmine.ruby-lang.org/issues/show/1893

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