[MacPorts] #16329: Inheritance of macports.conf configuration files

[MacPorts]

#16329: Inheritance of macports.conf configuration files
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 Reporter:  adambyrtek at gmail.com  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  enhancement           |      Status:  new                                  
 Priority:  Normal                |   Milestone:  MacPorts base enhancements           
Component:  ports                 |     Version:  1.6.0                                
 Keywords:  configuration patch   |  
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 There are two possible locations of MacPorts configuration file:[[BR]]
 $prefix/etc/macports.conf[[BR]]
 $home/.macports/macports.conf

 Currently user defined file if present *substitutes* the global file
 completely. The attached patch allows user to override only a few
 configuration options, keeping the global file as a default for other
 options. This is more in line with other Unix tools and more convenient,
 as often user only wants to tweak a few options keeping the rest in place.

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Ticket URL: <http://trac.macports.org/ticket/16329>
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