[Haskell-cafe] parsec: how to get end location

Suppose I have some parser 'p'. I want to parse it as well as get its span in the text. So I could write \begin{code] pWithLocation = do loc_start <- getPosition pval <- p loc_end <- getPosition return (pval,loc_start,loc_end) \end{code} except that loc_end gives me the location _after_ 'p'. In case when 'p' has consumed trailing newline I see no way to recover the end location of 'p' (it is the last column of the previous line). So, can I do anything with this without patching parsec? I use parsec3 if it matters. -- Roman I. Cheplyaka :: http://ro-che.info/ "Don't let school get in the way of your education." - Mark Twain