[MacPorts] #34375: grep @2.10_0 upgrade to 2.10_1 fails

[MacPorts]

#34375: grep @2.10_0 upgrade to 2.10_1 fails
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 Reporter:  nonstop.server@…          |       Owner:  ryandesign@…           
     Type:  defect                    |      Status:  assigned               
 Priority:  Normal                    |   Milestone:                         
Component:  ports                     |     Version:  2.0.4                  
 Keywords:                            |        Port:  grep                   
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Changes (by ryandesign@…):

  * status:  new => assigned
  * owner:  macports-tickets@… => ryandesign@…


Comment:

 So the problem shown in the log is that grep is trying to use the old
 version of itself to configure itself, which of course doesn't work
 because the old version of itself is broken due to the pcre library
 version increase. We should ensure the grep port only uses /usr/bin/grep
 even if /opt/local/bin/grep is available.

 Curiously I do not see the problem on my Snow Leopard system. I'll test on
 Leopard.

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Ticket URL: <https://trac.macports.org/ticket/34375#comment:3>
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