[MacPorts] #56873: Inconsistent behavior between ncurses 6.1.20180127 and ncurses 5.7

[MacPorts]

#56873: Inconsistent behavior between ncurses 6.1.20180127 and ncurses 5.7
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  Reporter:  LiamFry  |      Owner:  jmroot
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.5.3
Resolution:           |   Keywords:
      Port:  ncurses  |
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Comment (by jmroot):

 Does the behaviour change if you set `TERM=iterm2` or `TERM=iterm` as
 appropriate?

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Ticket URL: <https://trac.macports.org/ticket/56873#comment:4>
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