[MacPorts] #26406: .packlist files contain each line twice

[MacPorts]

#26406: .packlist files contain each line twice
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 Reporter:  ryandesign@…             |       Owner:  macports-tickets@…                   
     Type:  defect                   |      Status:  new                                  
 Priority:  Normal                   |   Milestone:                                       
Component:  ports                    |     Version:  1.9.1                                
 Keywords:                           |        Port:  perl5 portgroup                      
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Comment(by ryandesign@…):

 Replying to [ticket:26406 ryandesign@…]:
 > This should be an easy two-statement one-liner with sed; I'm not sure if
 reinplace alone can handle it.

 Make that a one-statement one-liner with sed:

 {{{
 sed -n "s|${destroot}||p" ${file}
 }}}

 That would be within an `fs-traverse` finding all .packlists.

 `reinplace` doesn't have the `-n` switch though so we may actually have to
 call out to `sed` using `system`. Or we could enhance `reinplace` to
 support the `-n` switch.

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Ticket URL: <http://trac.macports.org/ticket/26406#comment:1>
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