[MacPorts] #40035: base aborts if current directory does not exist, even when given a port name

[MacPorts]

#40035: base aborts if current directory does not exist, even when given a port
name
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  Reporter:  larryv@…  |      Owner:  larryv@…
      Type:  defect    |     Status:  new
  Priority:  Low       |  Milestone:
 Component:  base      |    Version:  2.2.0
Resolution:            |   Keywords:
      Port:            |
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Comment (by ionic@…):

 No, you're changing other semantics.

 `()` spawns a subshell and `cd ..` does only apply to this child process.
 The parent's PWD is not affected (and will stay the deleted directory.)

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Ticket URL: <https://trac.macports.org/ticket/40035#comment:3>
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