[MacPorts] #58217: bash-completion: add subport for bash 3.2 compatible version

[MacPorts]

#58217: bash-completion: add subport for bash 3.2 compatible version
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  Reporter:  mohd-akram       |      Owner:  raimue
      Type:  enhancement      |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:
      Port:  bash-completion  |
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Comment (by mohd-akram):

 With Apple essentially [https://support.apple.com/en-us/HT208050
 deprecating bash] in macOS Catalina, there won't be much need for this.

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Ticket URL: <https://trac.macports.org/ticket/58217#comment:3>
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