[MacPorts] #27799: upgrade_sources_conf_default.tcl failed during selfupdate due to svn warnings

[MacPorts]

#27799: upgrade_sources_conf_default.tcl failed during selfupdate due to svn
warnings
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 Reporter:  vinc17@…             |       Owner:  macports-tickets@…                   
     Type:  defect               |      Status:  new                                  
 Priority:  Normal               |   Milestone:                                       
Component:  base                 |     Version:  1.9.1                                
 Keywords:                       |        Port:                                       
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Comment(by vinc17@…):

 It seems that something run by port unset both LANG and LC_CTYPE. That
 would give the warnings I obtained.

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Ticket URL: <https://trac.macports.org/ticket/27799#comment:4>
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