[MacPorts] #58452: bash-completion: port(1) ui_warn output is displayed during tab completion

[MacPorts]

#58452: bash-completion: port(1) ui_warn output is displayed during tab completion
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  Reporter:  paxperscientiam  |      Owner:  raimue
      Type:  defect           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.5.4
Resolution:                   |   Keywords:
      Port:  bash-completion  |
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Comment (by raimue):

 Thanks for the detailed report with the screencast! This is definitely not
 intentional. I did not want to redirect all error output, because if the
 port completion command fails, it could contain actual helpful error
 messages. But I agree that in this case, although correct, it is
 disruptive. On the other hand, you might have run an `port upgrade` and
 installed some outdated version without the warning...

 In the hope this will also be useful for other other automated scripts, I
 propose we change the behavior for the next MacPorts base version. As
 quiet mode via `port -q` is already in use in the bash-completion script,
 we could suppress the warning in quiet mode: https://github.com/macports
 /macports-base/pull/126

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Ticket URL: <https://trac.macports.org/ticket/58452#comment:4>
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