Michael,
Here is how I do it.
> module Main where
> import Text.Regex.Posix.ByteString
> import Data.Maybe
> import qualified Data.ByteString.Char8 as S
> text = S.pack "11\n abcd \n22"
> p = S.pack "11\n(.*)\n22"
> main :: IO ()
> main =
> do { (Right pat) <- compile compExtended execBlank p
> ; res <- regexec pat text
> ; case res of
> { (Right (Just (_,_,_,m))) -> putStrLn (show m)
> ; _ -> putStrLn "not matched."
> }
> }
You may swap out ByteString with String,
PCRE should be similar, too.
Regards,
Kenny
On Wed, Nov 4, 2009 at 2:04 PM, Michael Mossey <m...@alumni.caltech.edu>wrote:
>
>
> kenny lu wrote:
>
>> Hi Michael,
>>
>> Could you give an example of what patterns you want to write?
>>
>> Regards,
>> Kenny
>>
>>
> Something like
>
> text = "11\n abcd \n22"
> answer = text =~ "11.*22" :: <various possibilities>
>
> and have it find the entire string. The default behavior is to stop
> matching when it encounters a newline. There is mention in the
> Text.Regex.Posix docs of a flag to control this behavior, but it is not easy
> to figure out from the docs how to provide flags. The left-hand side of the
> =~ is a very complex type.
>
>
>
>
>
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