[MacPorts] #57160: MacPorts base readline support is not compatible with MacPorts readline port

[MacPorts]

#57160: MacPorts base readline support is not compatible with MacPorts readline
port
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  Reporter:  lemzwerg  |      Owner:  (none)
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  base      |    Version:
Resolution:            |   Keywords:
      Port:            |
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Comment (by lemzwerg):

 OK, issue understood.  Thanks for the comments.  So the bug is that
 {{{--with-curlprefix}}} accepts {{{/opt/local}}}, which should be rejected
 or filtered out as is already done with {{{$PATH}}}.

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Ticket URL: <https://trac.macports.org/ticket/57160#comment:3>
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