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module Bundler
module PathPreserver
def self.preserve_path_in_environment(env_var, env = ENV)
original_env_var = "_ORIGINAL_#{env_var}"
original_path = ENV[original_env_var]
path = ENV[env_var]
ENV[original_env_var] = path if original_path.nil? || original_path.empty?
ENV[env_var] = original_path if path.nil? || path.empty?
end
end
end
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