ENV should not be a Hash
------------------------
Key: JRUBY-4947
URL: http://jira.codehaus.org/browse/JRUBY-4947
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.6
Reporter: Hiro Asari
This got me by surprise, but
{noformat}
$ ruby1.9 -v -e 'p ENV.kind_of? Hash'
ruby 1.9.3dev (2010-07-15 trunk 28648) [x86_64-darwin10.4.0]
false
$ ruby -v -e 'p ENV.kind_of? Hash'
ruby 1.8.7 (2009-06-12 patchlevel 174) [universal-darwin10.0]
false
$ jruby -v -e 'p ENV.kind_of? Hash'
jruby 1.6.0.dev (ruby 1.8.7 patchlevel 249) (2010-07-18 e910337) (Java
HotSpot(TM) 64-Bit Server VM 1.6.0_20) [x86_64-java]
true
{noformat}
In fact, {{ENV}} is an {{Object}} with a lot of singleton methods that make it
look like it's a {{Hash}}.
I guess this is the reason that {{ENV.to_hash}} exists.
Currently {{ENV}} and {{JAVA_ENV}} implemented through {{StringOnlyRubyHash}},
which extends {{RubyHash}}.
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