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@@ -1,5 +1,7 @@
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 *SVN*
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+* Deprecated upper-cased variables [Jamis Buck]
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+
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 * Make sure Actor#get does not close the SFTP channel (so subsequent SFTP operations work) [Dov Murik]
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 * Add :env option to 'run' (and friends) so that you can specify environment variables to be injected into the new process' environment [Mathieu Lajugie]

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@@ -68,6 +68,7 @@ module Capistrano
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       # actor. This is to allow uppercase "variables" to be set and referenced
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       # in recipes.
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       if variable.to_s[0].between?(?A, ?Z)
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+        warn "[DEPRECATION] You setting an upper-cased variable, `#{variable}'. Variables should start with a lower-case letter. Support for upper-cased variables will be removed in version 2."
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         klass = @actor.metaclass
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         klass.send(:remove_const, variable) if klass.const_defined?(variable)
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         klass.const_set(variable, value)