[MacPorts] #21117: use_dmg yes fails to copy from some images sometimes

[MacPorts]

#21117: use_dmg yes fails to copy from some images sometimes
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  Reporter:  ryandesign@…  |      Owner:  ryandesign@…
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:  MacPorts Future
 Component:  base          |    Version:  1.8.0
Resolution:  fixed         |   Keywords:
      Port:                |
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Comment (by blair@…):

 Please provide more information on when it doesn't work, such as log
 output, the command you ran, etc.

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Ticket URL: <https://trac.macports.org/ticket/21117#comment:10>
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