[Buildbot] #2878: Windows escaping seem to produce problems

[Buildbot trac]

#2878: Windows escaping seem to produce problems
-------------------+-----------------------
Reporter:  sa2ajj  |      Owner:
    Type:  defect  |     Status:  new
Priority:  major   |  Milestone:  undecided
 Version:  0.8.9   |   Keywords:
-------------------+-----------------------
 I am not sure for how long those paste's will be available:

 * builder configuration -- http://paste.debian.net/116891/
 * failed step output -- http://paste.debian.net/116894/

 Error message:

 {{{
 '%VCENV_BAT%' is not recognized as an internal or external command,
 operable program or batch file.
 }}}

 Discussion on IRC starts at
 http://irclogs.jackgrigg.com/irc.freenode.net/buildbot/2014-08-22#i_3429967

 BAT file that produces the error: http://paste.debian.net/116918

 The problem seems to be

 {{{
 ... ^&^& ...
 }}}

 The question is why `&` were escaped this way.

--
Ticket URL: <http://trac.buildbot.net/ticket/2878>
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