[tor-bugs] #18263 [Tor]: GETCONF provides incorrect value when undefined

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#18263: GETCONF provides incorrect value when undefined
------------------------+-----------------
     Reporter:  atagar  |      Owner:
         Type:  defect  |     Status:  new
     Priority:  Low     |  Milestone:
    Component:  Tor     |    Version:
     Severity:  Minor   |   Keywords:
Actual Points:          |  Parent ID:
       Points:          |    Sponsor:
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 This is kinda subtle but CommaList and RouterList values mistakenly
 include a '=' when undefined...

 {{{
 GETCONF ExcludeNodes
 250 ExcludeNodes=
 }}}

 By contrast here's what Bridge, a LineList value, provides...

 {{{
 GETCONF Bridge
 250 Bridge
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18263>
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