HI, I want to efficiently parse a large collections of files. The files are in the format : example title TITLE author name AUTHOR some lines with summary here SUMMARY the real text TEXT a list of links LINKS I want to use "ByteString" here, but which library should I use to parse ? "attoparsec" or "bytestringparser", both export the same interface. When I use one of these I thaught it would be nice to write something like this : fileParser :: Parser Content fileParser = do title <- manyTill getInput (string . pack "\nTITLE\n") author <- manyTill getInput (string. pack "\nTITLE\n") .... return Content title author ... But this doesn't work. Even on a small example : parseTest (manyTill getInput (string $ pack "SPLIT") (pack "split the text at SPLIT part two") I get a stack overflow. Obviously I'm not understanding something here. Are there any good examples of open source projects which parse ByteString data ? thanks in advance, Pieter -- Pieter Laeremans "The future is here. It's just not evenly distributed yet." W. Gibson