[MacPorts] #58161: portname not treated as exact name in `port echo depends:portname`

[MacPorts]

#58161: portname not treated as exact name in `port echo depends:portname`
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  Reporter:  chrstphrchvz  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  base          |    Version:  2.5.4
Resolution:                |   Keywords:
      Port:                |
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Comment (by ryandesign):

 You are correct, this is how selectors like `depends:` behave. What you
 specify is a regular expression, not an exact name. This is a feature, not
 a bug. If the documentation says it's an exact name, the documentation is
 wrong. A lot of the documentation is outdated or wrong and the whole guide
 should really be rewritten from scratch. Unfortunately, that will take a
 lot of planning and work that nobody has yet found the time to do.

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Ticket URL: <https://trac.macports.org/ticket/58161#comment:1>
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