Attachment is the test text file.

And I tested my regexp as this:

Prelude> :m + Text.Regex.PCRE

Prelude Text.Regex.PCRE> z <- readFile "test.html"

Prelude Text.Regex.PCRE> let (b, m ,a, ss) = z =~ "<a href=\"(.*?)\">.*?<img class=\"article-image\"" :: (String, String, String, [String])

Prelude Text.Regex.PCRE> b

...

n of the Triumvirate</td>\r\n <td class=\"small\">David Rapoza</td>\r\n <td class=\"small\">\r\n <i>Return to Ravnica</i>\r\n </td>\r\n <td class=\"small\">10/31/2012</td>\r\n </tr><tr>\r\n <td class=\"small\"><"

Prelude Text.Regex.PCRE> m

"a href=\"/magic/magazine/article.aspx?x=mtg/daily/activity/1088\"><img class=\"article-image\" "

From the value of b and m, it was weird that the matching was moved forward by 1 char ( the ss (sub matching) was even worse, 2 chars ). Rematch to a and so on gave correct results. It was only the first matching that was broken.

Tested with regex-posix (with modified regexp), everything is OK.

$ ghc-pkg describe regex-pcre

name: regex-pcre

version: 0.94.4

id: regex-pcre-0.94.4-d45e00c9e113c7c9352d0785497e1dca

license: BSD3

maintainer: TextRegexLazy@personal.mightyreason.com

stability: Seems to work, passes a few tests

homepage: http://hackage.haskell.org/package/regex-pcre

package-url: http://code.haskell.org/regex-pcre/

synopsis: Replaces/Enhances Text.Regex

description: The PCRE backend to accompany regex-base, see www.pcre.org

category: Text

author: Christopher Kuklewicz

exposed: True

exposed-modules: Text.Regex.PCRE Text.Regex.PCRE.Wrap

Text.Regex.PCRE.String Text.Regex.PCRE.Sequence

Text.Regex.PCRE.ByteString Text.Regex.PCRE.ByteString.Lazy

hidden-modules:

trusted: False

import-dirs: /home/magicloud/.cabal/lib/regex-pcre-0.94.4/ghc-7.6.1

library-dirs: /home/magicloud/.cabal/lib/regex-pcre-0.94.4/ghc-7.6.1

hs-libraries: HSregex-pcre-0.94.4

extra-libraries: pcre

extra-ghci-libraries:

include-dirs:

includes:

depends: array-0.4.0.1-cbe8814e07792e8f0d66cac77a2c0b6b

base-4.6.0.0-9108e251636b0c8499261c52a7809ea1

bytestring-0.10.0.1-11d4f52c4f4ed9833f768577b77050c5

containers-0.5.2.1-b183418bc7f43ce98b6916ef296c2669

regex-base-0.93.2-1ee07f806ad6b0c911226883d15b64f2

hugs-options:

cc-options:

ld-options:

framework-dirs:

frameworks:

haddock-interfaces: /home/magicloud/.cabal/share/doc/regex-pcre-0.94.4/html/regex-pcre.haddock

haddock-html: /home/magicloud/.cabal/share/doc/regex-pcre-0.94.4/html

pkgroot: "/home/magicloud/.ghc/x86_64-linux-7.6.1"

--
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