- where selectWord _ [] = (0,w)
- selectWord n (x:xs)
- | n+length x >= start = (start-n-1,take (end-n+1) x)
- | otherwise = selectWord (n+length x) xs
+ where words' _ [] = []
+ words' n str = let (w,r) = break isSpace str
+ (s,r') = span isSpace r
+ in (n,w):words' (n+length w+length s) r'
+ -- In a Haskell expression we want to parse 'a-b' as three words
+ -- where a compiler flag (ie. -fno-monomorphism-restriction) should
+ -- only be a single word.
+ selectWord [] = (0,w)
+ selectWord ((offset,x):xs)
+ | offset+length x >= start = (start-offset,take (end-offset) x)
+ | otherwise = selectWord xs