[tor-bugs] #12930 [Pluggable transport]: Someone, somewhere needs to unescape pluggable transport "SMETHOD ARGS" arguments.

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#12930: Someone, somewhere needs to unescape pluggable transport "SMETHOD ARGS"
arguments.
-------------------------------------+--------------------
     Reporter:  yawning              |      Owner:  asn
         Type:  defect               |     Status:  new
     Priority:  normal               |  Milestone:
    Component:  Pluggable transport  |    Version:
   Resolution:                       |   Keywords:
Actual Points:                       |  Parent ID:  #12130
       Points:                       |
-------------------------------------+--------------------
Changes (by yawning):

 * cc: dcf (added)


Comment:

 There's also a goptlib bug here, where it escapes twice.  Once in
 `encodeSmethodArgs()` (fine), and ince in `pt.go:formatline()` (not so
 fine).

 If the output was to be compliant with the pt-spec the problematic entries
 will end in `\=`.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/12930#comment:1>
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