Haskell scanner

[nathany]

Eric Thomas requested a Haskell scanner. @et

From Redmine: http://odd-eyed-code.org/issues/232

[yb66]

+1

[tel]

+1

[seprich]

+1

[davidpdrsn]

+1

[chamini2]

+2

[PierreR]

👍

[alok]

+1