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@@ -10,4 +10,7 @@ rescue NoMethodError
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   puts "Unrecognized command #{ARGV.first}.\n\n"
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   puts RoastBeef::USAGE
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   exit 1
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+rescue => e
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+  puts e.to_s
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+  exit 1
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 end

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@@ -59,6 +59,7 @@ should do control-c to cancel.") || STDIN.gets if unremovable?
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     end
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     def self.find(name, metadata = RoastBeef.listing[name])
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+      raise "Package #{name} not found." if metadata.nil?
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       require "scms/#{metadata['scm']}_package"
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       PACKAGE_TYPES[metadata['scm']].new(name, metadata)
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     end