[MacPorts] #19035: make port use --enable-readline when selfupdating

[MacPorts]

#19035: make port use --enable-readline when selfupdating
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 Reporter:  yacoob@…          |       Owner:  macports-tickets@…                   
     Type:  defect            |      Status:  new                                  
 Priority:  Normal            |   Milestone:  Port Bugs                            
Component:  ports             |     Version:  1.7.0                                
 Keywords:                    |        Port:                                       
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 It's pretty annoying that you lose cli history and editing after you do
 'port selfupdate'. Can someone please add --enable-readline to make sure
 new versions of 'port' are as usable as the version installed from .dmg?

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Ticket URL: <http://trac.macports.org/ticket/19035>
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