[MacPorts] #16223: port doesn't check whether the extract target has failed

[MacPorts]

#16223: port doesn't check whether the extract target has failed
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  Reporter:  vinc17 at macports.org  |       Owner:  macports-tickets at lists.macosforge.org
      Type:  defect               |      Status:  new                                  
  Priority:  Normal               |   Milestone:  MacPorts base bugs                   
 Component:  base                 |     Version:  1.6.0                                
Resolution:                       |    Keywords:                                       
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Comment (by blb at macports.org):

 Some experimenting suggests its the pipe that causes a loss of the error
 code; when portextract.tcl does
 {{{
 default extract.post_args {"| ${portutil::autoconf::tar_command} -xf -"}
 }}}
 and the program prior to the pipe fails, it's error code is then lost
 because of the pipe.

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Ticket URL: <http://trac.macports.org/ticket/16223#comment:2>
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