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@@ -219,10 +219,6 @@ module ActionController
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           g.result :controller, expr, true
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         end
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-        def file_kinds(kind)
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-          ((@file_kinds ||= [:components]) << kind).uniq! || @file_kinds
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-        end        
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-        
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         def traverse_to_controller(segments, start_at = 0)
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           mod = ::Object
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           length = segments.length
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@@ -232,7 +228,6 @@ module ActionController
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             return nil unless /\A[A-Za-z][A-Za-z\d_]*\Z/ =~ (segment = segments[index])
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             index += 1
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-            file_kinds :app
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             mod_name = segment.camelize
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             controller_name = "#{mod_name}Controller"
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             path_suffix = File.join(segments[start_at..(index - 1)])
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@@ -273,7 +268,8 @@ module ActionController
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             $LOAD_PATH.select do |base|
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               base = File.expand_path(base)
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               extended_root = File.expand_path(RAILS_ROOT)
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-              base.match(/\A#{Regexp.escape(extended_root)}\/*(#{file_kinds(:lib) * '|'})\/[a-z]/) || base =~ %r{rails-[\d.]+/builtin}
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+              # Exclude all paths that are not nested within app, lib, or components.
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+              base.match(/\A#{Regexp.escape(extended_root)}\/*(app|lib|components)\/[a-z]/) || base =~ %r{rails-[\d.]+/builtin}
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             end
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           else
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             $LOAD_PATH