[MacPorts] #16817: BUG: 'port cat' appends blank line to svn version of Portfile

[MacPorts]

#16817: BUG: 'port cat' appends blank line to svn version of Portfile
---------------------------------+------------------------------------------
 Reporter:  devans at macports.org  |       Owner:  macports-tickets at lists.macosforge.org
     Type:  defect               |      Status:  new                                  
 Priority:  High                 |   Milestone:  MacPorts base bugs                   
Component:  ports                |     Version:  1.7.0                                
 Keywords:                       |        Port:  MacPorts                             
---------------------------------+------------------------------------------
 When using the command 'port cat port_name' to obtain a copy of
 a given port's Portfile, the text returned has a blank line appended
 relative to the svn repository version.

 This can be verified as follows:

 {{{
 cp `port dir port_name` Portfile.repo  // get repo copy
 port cat port_name > Portfile.cat      // get port cat copy
 diff -u Portfile.repo Portfile.cat     // compare them
 }}}

 Using libgweather as an example the result is

 {{{
 --- Portfile.repo       2008-10-10 15:05:03.000000000 -0700
 +++ Portfile.cat        2008-10-10 15:05:32.000000000 -0700
 @@ -26,3 +26,4 @@
  post-activate {
         system "${prefix}/bin/scrollkeeper-update"
  }
 +
 }}}

 This is a problem because if you use 'port cat' to get a
 presumed copy of a port's Portfile, edit it and then make
 a patch file for upload to Trac, the patch file will fail
 when applied to svn if the effect of the patch is to
 append additional script lines to the end of the original
 Portfile.  If you're not appending to the end, the patch works
 fine.  And, of course, the patch always appears to work fine locally.

 This apparently random on again, off again failure mode can cause you to
 question your sanity (as I was) if you don't recognize the pattern!

 I'm using MacPorts built from latest trunk.  Haven't tried this
 with 1.6.0.

-- 
Ticket URL: <http://trac.macports.org/ticket/16817>
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