[MacPorts] #69536: _comp_initialize seems missing after recent upgrade

[MacPorts]

#69536: _comp_initialize seems missing after recent upgrade
------------------------+--------------------
 Reporter:  davidfavor  |      Owner:  (none)
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:
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 Seems to only effect certain commands like tar.

 To recreate... tar <TAB> produces...
 ```
 tar <TAB> produc
 imac> tar -bash: _comp_initialize: command not found
 ```
 I've tried manually running ".
 /opt/local/etc/profile.d/bash_completion.sh" in bash + problem persists.

 Fix seems to be running ". /opt/local/share/bash-
 completion/bash_completion" in bash, which resolves the problem.

 This suggests some slight breakage in
 /opt/local/etc/profile.d/bash_completion.sh file which has crept in at
 some point.

-- 
Ticket URL: <https://trac.macports.org/ticket/69536>
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