fix regression from rev. 338 - parsing shebang from string with newlines works fine again

debian/changelog

-python-defaults (2.7.3-3) UNRELEASED; urgency=low
+python-defaults (2.7.3-3) unstable; urgency=low
 
   [ Piotr Ożarowski ]
   * dh_python2:
@@ -8,8 +8,6 @@ python-defaults (2.7.3-3) UNRELEASED; urgency=low
       python3-* ones
     - generates correct "python (<< 2.X)" dependencies for packages with
       private Python extensions (typo fixed)
-    - TODO: parse interpreter version number from --shebang option and add
-      apropriate dependency/rt* script arguments
   * pyversions.py: fix parsing DEBPYTHON_SUPPORTED env. variable
     (versions should be separated using comma, as in debian_defaults
     config file)
@@ -18,7 +16,7 @@ python-defaults (2.7.3-3) UNRELEASED; urgency=low
   * debian/python.{pre,post}rm.in: Handle purge command the same way as
     remove (thanks to Mitsuya Shibata for the bug report)
 
- -- Piotr Ożarowski <piotr@debian.org>  Fri, 31 Aug 2012 18:06:26 +0200
+ -- Piotr Ożarowski <piotr@debian.org>  Sun, 21 Oct 2012 22:40:55 +0200
 
 python-defaults (2.7.3-2) unstable; urgency=low
 

debpython/tools.py

@@ -33,7 +33,7 @@ from debpython.version import RANGE_PATTERN, getver, get_requested_versions
 
 log = logging.getLogger(__name__)
 EGGnPTH_RE = re.compile(r'(.*?)(-py\d\.\d(?:-[^.]*)?)?(\.egg-info|\.pth)$')
-SHEBANG_RE = re.compile(r'^#!\s*(.*?/bin/.*?)(python(2\.\d+)?(?:-dbg)?)(?:\s(.*))?$')
+SHEBANG_RE = re.compile(r'^#!\s*(.*?/bin/.*?)(python(2\.\d+)?(?:-dbg)?)(?:\s(.*))?[$\r\n].*')
 SHAREDLIB_RE = re.compile(r'NEEDED.*libpython(\d\.\d)')
 INSTALL_RE = re.compile(r"""
     (?P<pattern>.+?)  # file pattern