[Bugs] #1403 UNSP: shell breaks if system bus cannot be accessed

[Sugar Labs Bugs]

#1403: shell breaks if system bus cannot be accessed
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    Reporter:  sascha_silbe               |          Owner:  sascha_silbe               
        Type:  defect                     |         Status:  accepted                   
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  sugar                      |        Version:  Git as of bugdate          
    Severity:  Major                      |       Keywords:  r?                         
Distribution:  Unspecified                |   Status_field:  New                        
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Changes (by sascha_silbe):

  * keywords:  => r?
  * owner:  tomeu => sascha_silbe
  * status:  new => accepted


Comment:

 Again I need to test on a system with a working system bus, but we can
 start review anyway. The patch is a bit large because of whitespace
 changes (i.e. indentation), but the actual number of changes is quite
 small.

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Ticket URL: <http://bugs.sugarlabs.org/ticket/1403#comment:1>
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