[MacPorts] #25075: postflight script sometimes overwrites conf files

[MacPorts]

#25075: postflight script sometimes overwrites conf files
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 Reporter:  brad@…            |       Owner:  macports-tickets@…                   
     Type:  defect            |      Status:  new                                  
 Priority:  Normal            |   Milestone:                                       
Component:  base              |     Version:                                       
 Keywords:                    |        Port:                                       
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Comment(by jmr@…):

 If `file rename` fails, it will throw an error. Only the first one is
 wrapped in a catch. I doubt that upgrade_sources_conf_default.tcl is to
 blame in any case, because all of my config files were overwritten the one
 time the installer misbehaved.

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Ticket URL: <http://trac.macports.org/ticket/25075#comment:6>
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