windows:ARGF.readpartial treats second argument as an output buffer
windows:ARGF.readpartial clears output buffer before appending to it
windows:ARGF.readpartial reads a number of bytes from stdin
windows:ARGF.readpartial reads maximum number of bytes from one file at a time
windows:ARGF.readpartial returns an empty string if EOFError is raised while reading any but the last file
windows:ARGF.readpartial raises an EOFError if the exception was raised while reading the last file
windows:ARGF.readpartial raises an EOFError if the exception was raised while reading STDIN
