runghc, ghc rts or base implements unintuitive shell escaping in Windows

Parameters passed to script via runghc get malformed unintuitively.

Commandline "C:\Program Files\" "C:\Program Files\" 
should give ["c:\\Program Files\\", "c:\\Program Files\\"]
but gives ["c:\\Program Files\" c:\\Program","Files\""]

On Windows Vista, ghc is from Neil's installer:

C:\Users\eivuokko\Documents\source\cabal2wix>copy con test.hs
module Main where
import System.Environment
main = getArgs >>= print
^Z
        1 file(s) copied.

C:\Users\eivuokko\Documents\source\cabal2wix>runghc test "c:\Program Files\" "c:
\Program Files\"
["c:\\Program Files\" c:\\Program","Files\""]

C:\Users\eivuokko\Documents\source\cabal2wix>ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.6.1

Trac metadata

Trac field	Value
Version	6.6.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system	Unknown
Architecture	Unknown