[MacPorts] #70054: port echo adds whitespace after port names

[MacPorts]

#70054: port echo adds whitespace after port names
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 Reporter:  mohd-akram  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  base        |    Version:  2.9.3
 Keywords:              |       Port:
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 `port echo` seems to add a bunch of spaces after every port name. This can
 trip up some shell pipelines, eg. `port echo bash | grep -x bash` fails.

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Ticket URL: <https://trac.macports.org/ticket/70054>
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