I've been using Cygwin's bash & make, but I just verified that I get the same behavior when I use cmd.exe directly.

I run this command (in cmd.exe):

setup configure --disable-use-packages --haddock-args=" --read-interface= http://haskell.org/ghc/docs/latest/html/libraries/base,c:/ghc/ghc-6.6/doc/html/libraries/base/base.haddock --read-interface= http://haskell.org/ghc/docs/latest/html/libraries/mtl,c:/ghc/ghc-6.6/doc/html/libraries/mtl/mtl.haddock --read-interface=http://wxhaskell.sourceforge.net/doc,c:/Haskell/wxhaskell/out/doc/wxhaskell.haddock " --prefix=c:/Haskell/packages --datadir=c:/Haskell/packages

and the resulting.setup-config file's withProgram field contains this element:

("haddock",Program {programName = "haddock", programBinName = "haddock", programArgs = ["--read-interface=http:\\\\haskell.org\\ghc\\docs\\latest\\html\\libraries\\base,c:\\ghc\\ghc- 6.6\\doc\\html\\libraries\\base\\base.haddock","--read-interface=http:\\\\haskell.org\\ghc\\docs\\latest\\html\\libraries\\mtl,c:\\ghc\\ghc-6.6\\doc\\html\\libraries\\mtl\\mtl.haddock","--read-interface=http:\\\\wxhaskell.sourceforge.net\\doc,c:\\Haskell\\wxhaskell\\out\\doc\\wxhaskell.haddock"], programLocation = FoundOnSystem "c:\\Haskell\\packages\\Haskell\\bin\\haddock.exe"})

and many other fields with similar translation of file paths.

- Conal

On 1/25/07, Duncan Coutts < duncan.coutts@worc.ox.ac.uk> wrote:

On Wed, 2007-01-24 at 22:51 -0800, Conal Elliott wrote:
> Do forward slashes get turned into backslashes for xxxx-args arguments
> in Windows?

Are you using a shell like Mingw's MSYS? If so it does do that kind of
translation. If you're getting that behaviour when using an ordinary
windows command prompt (cmd.exe) then it's a cabal issue.

Duncan