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11
  • So if I'm understanding right, the shell connects stderr to the tty when stdin is redirected (via pipe or other means)? Or just always connects stderr to the tty? Commented Jun 30, 2018 at 17:47
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    When you log in, stderr is connected to your login terminal. Commented Jun 30, 2018 at 18:00
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    i =+ 1 is perfectly valid C, and is equal to i = (+1). Granted, the former is nice candidate for the underhanded C contest. Commented Jun 30, 2018 at 18:57
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    OK, it may be that it just creates a warning. I changed the code to something else from C in 1977. Commented Jun 30, 2018 at 19:14
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    It seems that I am aware of more shells, since I do know of at least one shell that reads from other than its standard input. (-: Commented Jul 1, 2018 at 0:27