module Utils def self.popen_read(*args, &block) popen(args, "rb", &block) end def self.popen_write(*args, &block) popen(args, "wb", &block) end def self.popen(args, mode) IO.popen("-", mode) do |pipe| if pipe return pipe.read unless block_given? yield pipe else $stderr.reopen("/dev/null", "w") exec(*args) end end end end head>
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