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7.17.2.5 X Shell Flag Definitions

The flags affect new processes spawning.

• - XSHELL_NONBLOCKING_INPUT

  the file from which the process reads (and made available by ‘xs_input’) will be opened in non blocking mode

  See Nonblocking I/O.

• - XSHELL_NONBLOCKING_OUTPUT

  the file to which the process writes (and made available by ‘xs_output’) will be opened in non blocking mode

  See Nonblocking I/O.