[Hackage] #877: Cabal config breaks on Windows with username "{"

[Hackage]

#877: Cabal config breaks on Windows with username "{"
------------------------------+---------------------------------------------
  Reporter:  guest            |        Owner:          
      Type:  defect           |       Status:  new     
  Priority:  normal           |    Milestone:          
 Component:  Cabal library    |      Version:  1.10.1.0
  Severity:  major            |     Keywords:  escaping
Difficulty:  easy (<4 hours)  |   Ghcversion:          
  Platform:                   |  
------------------------------+---------------------------------------------

Comment(by edouard):

 A l'image du RIB bancaire, le numero RIO est un identifiant unique
 attribue a une ligne et a un contrat client permettant d'identifier son
 demande de portabilite vers un autre operateur. [http://www.releve-
 identite-operateur.fr/rio-simyo.html simyo]

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/877#comment:2>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects