[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:                   |  
------------------------------+---------------------------------------------
 I can't do anything because my username is "{". Either the parsing is
 being done incorrectly or the config file was generated incorrectly.

 I named myself this deliberately to see if any software would break; kind
 of sad that the one thing that broke so far is cabal, thought you would
 know better... My config file is attached.

 C:\Program Files (x86)\Console2>cabal --version
 cabal-install version 0.10.2
 using version 1.10.1.0 of the Cabal library

 C:\Program Files (x86)\Console2>cabal update
 Warning: Error parsing config file
 C:\Users\{\AppData\Roaming\cabal\config:46:
 opening brace '{'has no matching closing brace '}'
 Warning: Using default configuration.
 Downloading the latest package list from hackage.haskell.org

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