[MacPorts] #35610: dsh fails with "sed: RE error: illegal byte sequence"

[MacPorts]

#35610: dsh fails with "sed: RE error: illegal byte sequence"
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  Reporter:  bruce@…  |      Owner:  bjorn@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.1.2
Resolution:           |   Keywords:  mountain lion
      Port:  dsh      |
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Comment (by chris.cinelli@…):

 Please fix THIS. port selfupgrade and port update outdated broke
 everything for me.
 You do not have 300 comments here just because you need to register to
 comment. There are a few people that are having problems with this!

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Ticket URL: <https://trac.macports.org/ticket/35610#comment:13>
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