diff --git a/Lib/bdb.py b/Lib/bdb.py
index 88088a5..6dc54ed 100644
--- a/Lib/bdb.py
+++ b/Lib/bdb.py
@@ -346,7 +346,7 @@
             rv = frame.f_locals['__return__']
             s = s + '->'
             s = s + reprlib.repr(rv)
-        line = linecache.getline(filename, lineno)
+        line = linecache.getline(filename, lineno, frame.f_globals)
         if line: s = s + lprefix + line.strip()
         return s
 
@@ -588,7 +588,7 @@
         name = frame.f_code.co_name
         if not name: name = '???'
         fn = self.canonic(frame.f_code.co_filename)
-        line = linecache.getline(fn, frame.f_lineno)
+        line = linecache.getline(fn, frame.f_lineno, frame.f_globals)
         print('+++', fn, frame.f_lineno, name, ':', line.strip())
     def user_return(self, frame, retval):
         print('+++ return', retval)
diff --git a/Lib/linecache.py b/Lib/linecache.py
index 50a0c1b..6a9535e 100644
--- a/Lib/linecache.py
+++ b/Lib/linecache.py
@@ -89,21 +89,20 @@
             get_source = getattr(loader, 'get_source', None)
 
             if name and get_source:
-                if basename.startswith(name.split('.')[-1]+'.'):
-                    try:
-                        data = get_source(name)
-                    except (ImportError, IOError):
-                        pass
-                    else:
-                        if data is None:
-                            # No luck, the PEP302 loader cannot find the source
-                            # for this module.
-                            return []
-                        cache[filename] = (
-                            len(data), None,
-                            [line+'\n' for line in data.splitlines()], fullname
-                        )
-                        return cache[filename][2]
+                try:
+                    data = get_source(name)
+                except (ImportError, IOError):
+                    pass
+                else:
+                    if data is None:
+                        # No luck, the PEP302 loader cannot find the source
+                        # for this module.
+                        return []
+                    cache[filename] = (
+                        len(data), None,
+                        [line+'\n' for line in data.splitlines()], fullname
+                    )
+                    return cache[filename][2]
 
         # Try looking through the module search path.
 
diff --git a/Lib/pdb.py b/Lib/pdb.py
index e697dfa..ca03c50 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -438,7 +438,7 @@
         Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank
         line or EOF). Warning: testing is not comprehensive.
         """
-        line = linecache.getline(filename, lineno)
+        line = linecache.getline(filename, lineno, self.curframe.f_globals)
         if not line:
             print('End of file', file=self.stdout)
             return 0
@@ -768,7 +768,7 @@
         breaklist = self.get_file_breaks(filename)
         try:
             for lineno in range(first, last+1):
-                line = linecache.getline(filename, lineno)
+                line = linecache.getline(filename, lineno, self.curframe.f_globals)
                 if not line:
                     print('[EOF]', file=self.stdout)
                     break
diff --git a/Lib/runpy.py b/Lib/runpy.py
index 5038266..22a2989 100755
--- a/Lib/runpy.py
+++ b/Lib/runpy.py
@@ -65,13 +65,14 @@
 
 # This helper is needed due to a missing component in the PEP 302
 # loader protocol (specifically, "get_filename" is non-standard)
+# Since we can't introduce new features in maintenance releases,
+# support was added to zipimporter under the name '_get_filename'
 def _get_filename(loader, mod_name):
-    try:
-        get_filename = loader.get_filename
-    except AttributeError:
-        return None
-    else:
-        return get_filename(mod_name)
+    for attr in ("get_filename", "_get_filename"):
+        meth = getattr(loader, attr, None)
+        if meth is not None:
+            return meth(mod_name)
+    return None
 
 # Helper to get the loader, code and filename for a module
 def _get_module_details(mod_name):
diff --git a/Lib/test/test_cmd_line_script.py b/Lib/test/test_cmd_line_script.py
index e0b09ea..7fab383 100644
--- a/Lib/test/test_cmd_line_script.py
+++ b/Lib/test/test_cmd_line_script.py
@@ -75,36 +75,66 @@
         compiled_name = script_name + 'o'
     return compiled_name
 
-def _make_test_zip(zip_dir, zip_basename, script_name):
+def _make_test_zip(zip_dir, zip_basename, script_name, name_in_zip=None):
     zip_filename = zip_basename+os.path.extsep+"zip"
     zip_name = os.path.join(zip_dir, zip_filename)
     zip_file = zipfile.ZipFile(zip_name, 'w')
-    zip_file.write(script_name, os.path.basename(script_name))
+    if name_in_zip is None:
+        name_in_zip = os.path.basename(script_name)
+    zip_file.write(script_name, name_in_zip)
     zip_file.close()
-    # if verbose:
+    #if verbose:
     #    zip_file = zipfile.ZipFile(zip_name, 'r')
     #    print("Contents of %r:" % zip_name)
     #    zip_file.printdir()
     #    zip_file.close()
-    return zip_name
+    return zip_name, os.path.join(zip_name, name_in_zip)
 
 def _make_test_pkg(pkg_dir):
     os.mkdir(pkg_dir)
     _make_test_script(pkg_dir, '__init__', '')
 
+def _make_test_zip_pkg(zip_dir, zip_basename, pkg_name, script_basename,
+                       source=test_source, depth=1):
+    init_name = _make_test_script(zip_dir, '__init__', '')
+    init_basename = os.path.basename(init_name)
+    script_name = _make_test_script(zip_dir, script_basename, source)
+    pkg_names = [os.sep.join([pkg_name]*i) for i in range(1, depth+1)]
+    script_name_in_zip = os.path.join(pkg_names[-1], os.path.basename(script_name))
+    zip_filename = zip_basename+os.extsep+'zip'
+    zip_name = os.path.join(zip_dir, zip_filename)
+    zip_file = zipfile.ZipFile(zip_name, 'w')
+    for name in pkg_names:
+        init_name_in_zip = os.path.join(name, init_basename)
+        zip_file.write(init_name, init_name_in_zip)
+    zip_file.write(script_name, script_name_in_zip)
+    zip_file.close()
+    os.unlink(init_name)
+    os.unlink(script_name)
+    #if verbose:
+    #    zip_file = zipfile.ZipFile(zip_name, 'r')
+    #    print 'Contents of %r:' % zip_name
+    #    zip_file.printdir()
+    #    zip_file.close()
+    return zip_name, os.path.join(zip_name, script_name_in_zip)
+
 # There's no easy way to pass the script directory in to get
 # -m to work (avoiding that is the whole point of making
 # directories and zipfiles executable!)
 # So we fake it for testing purposes with a custom launch script
 launch_source = """\
 import sys, os.path, runpy
-sys.path[0:0] = os.path.dirname(__file__)
+sys.path.insert(0, %s)
 runpy._run_module_as_main(%r)
 """
 
-def _make_launch_script(script_dir, script_basename, module_name):
-    return _make_test_script(script_dir, script_basename,
-                             launch_source % module_name)
+def _make_launch_script(script_dir, script_basename, module_name, path=None):
+    if path is None:
+        path = "os.path.dirname(__file__)"
+    else:
+        path = repr(path)
+    source = launch_source % (path, module_name)
+    return _make_test_script(script_dir, script_basename, source)
 
 class CmdLineTest(unittest.TestCase):
     def _check_script(self, script_name, expected_file,
@@ -155,15 +185,15 @@
     def test_zipfile(self):
         with temp_dir() as script_dir:
             script_name = _make_test_script(script_dir, '__main__')
-            zip_name = _make_test_zip(script_dir, 'test_zip', script_name)
-            self._check_script(zip_name, None, zip_name, '')
+            zip_name, run_name = _make_test_zip(script_dir, 'test_zip', script_name)
+            self._check_script(zip_name, run_name, zip_name, '')
 
     def test_zipfile_compiled(self):
         with temp_dir() as script_dir:
             script_name = _make_test_script(script_dir, '__main__')
             compiled_name = _compile_test_script(script_name)
-            zip_name = _make_test_zip(script_dir, 'test_zip', compiled_name)
-            self._check_script(zip_name, None, zip_name, '')
+            zip_name, run_name = _make_test_zip(script_dir, 'test_zip', compiled_name)
+            self._check_script(zip_name, run_name, zip_name, '')
 
     def test_module_in_package(self):
         with temp_dir() as script_dir:
@@ -171,8 +201,19 @@
             _make_test_pkg(pkg_dir)
             script_name = _make_test_script(pkg_dir, 'script')
             launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script')
-            self._check_script(launch_name, script_name,
-                               script_name, 'test_pkg')
+            self._check_script(launch_name, script_name, script_name, 'test_pkg')
+
+    def test_module_in_package_in_zipfile(self):
+        with temp_dir() as script_dir:
+            zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script')
+            launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.script', zip_name)
+            self._check_script(launch_name, run_name, run_name, 'test_pkg')
+
+    def test_module_in_subpackage_in_zipfile(self):
+        with temp_dir() as script_dir:
+            zip_name, run_name = _make_test_zip_pkg(script_dir, 'test_zip', 'test_pkg', 'script', depth=2)
+            launch_name = _make_launch_script(script_dir, 'launch', 'test_pkg.test_pkg.script', zip_name)
+            self._check_script(launch_name, run_name, run_name, 'test_pkg.test_pkg')
 
 
 def test_main():
diff --git a/Lib/test/test_doctest.py b/Lib/test/test_doctest.py
index f07da75..9a128fb 100644
--- a/Lib/test/test_doctest.py
+++ b/Lib/test/test_doctest.py
@@ -6,6 +6,9 @@
 import doctest
 import warnings
 
+# NOTE: There are some additional tests relating to interaction with
+#       zipimport in the test_zipimport_support test module.
+
 ######################################################################
 ## Sample Objects (used by test cases)
 ######################################################################
@@ -369,7 +372,7 @@
     >>> tests = finder.find(sample_func)
 
     >>> print(tests)  # doctest: +ELLIPSIS
-    [<DocTest sample_func from ...:13 (1 example)>]
+    [<DocTest sample_func from ...:16 (1 example)>]
 
 The exact name depends on how test_doctest was invoked, so allow for
 leading path components.
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index 7b85616..bde6d6c 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -18,6 +18,9 @@
 # getclasstree, getargspec, getargvalues, formatargspec, formatargvalues,
 # currentframe, stack, trace, isdatadescriptor
 
+# NOTE: There are some additional tests relating to interaction with
+#       zipimport in the test_zipimport_support test module.
+
 modfile = mod.__file__
 if modfile.endswith(('c', 'o')):
     modfile = modfile[:-1]
diff --git a/Lib/test/test_zipimport.py b/Lib/test/test_zipimport.py
index 754476a..5637467 100644
--- a/Lib/test/test_zipimport.py
+++ b/Lib/test/test_zipimport.py
@@ -211,16 +211,24 @@
             zi = zipimport.zipimporter(TEMP_ZIP)
             self.assertEquals(zi.archive, TEMP_ZIP)
             self.assertEquals(zi.is_package(TESTPACK), True)
-            zi.load_module(TESTPACK)
+            mod = zi.load_module(TESTPACK)
+            self.assertEquals(zi._get_filename(TESTPACK), mod.__file__)
 
             self.assertEquals(zi.is_package(packdir + '__init__'), False)
             self.assertEquals(zi.is_package(packdir + TESTPACK2), True)
             self.assertEquals(zi.is_package(packdir2 + TESTMOD), False)
 
-            mod_name = packdir2 + TESTMOD
-            mod = __import__(module_path_to_dotted_name(mod_name))
+            mod_path = packdir2 + TESTMOD
+            mod_name = module_path_to_dotted_name(mod_path)
+            pkg = __import__(mod_name)
+            mod = sys.modules[mod_name]
             self.assertEquals(zi.get_source(TESTPACK), None)
-            self.assertEquals(zi.get_source(mod_name), None)
+            self.assertEquals(zi.get_source(mod_path), None)
+            self.assertEquals(zi._get_filename(mod_path), mod.__file__)
+            # To pass in the module name instead of the path, we must use the right importer
+            loader = mod.__loader__
+            self.assertEquals(loader.get_source(mod_name), None)
+            self.assertEquals(loader._get_filename(mod_name), mod.__file__)
 
             # test prefix and archivepath members
             zi2 = zipimport.zipimporter(TEMP_ZIP + os.sep + TESTPACK)
@@ -248,15 +256,23 @@
             self.assertEquals(zi.archive, TEMP_ZIP)
             self.assertEquals(zi.prefix, packdir)
             self.assertEquals(zi.is_package(TESTPACK2), True)
-            zi.load_module(TESTPACK2)
+            mod = zi.load_module(TESTPACK2)
+            self.assertEquals(zi._get_filename(TESTPACK2), mod.__file__)
 
             self.assertEquals(zi.is_package(TESTPACK2 + os.sep + '__init__'), False)
             self.assertEquals(zi.is_package(TESTPACK2 + os.sep + TESTMOD), False)
 
-            mod_name = TESTPACK2 + os.sep + TESTMOD
-            mod = __import__(module_path_to_dotted_name(mod_name))
+            mod_path = TESTPACK2 + os.sep + TESTMOD
+            mod_name = module_path_to_dotted_name(mod_path)
+            pkg = __import__(mod_name)
+            mod = sys.modules[mod_name]
             self.assertEquals(zi.get_source(TESTPACK2), None)
-            self.assertEquals(zi.get_source(mod_name), None)
+            self.assertEquals(zi.get_source(mod_path), None)
+            self.assertEquals(zi._get_filename(mod_path), mod.__file__)
+            # To pass in the module name instead of the path, we must use the right importer
+            loader = mod.__loader__
+            self.assertEquals(loader.get_source(mod_name), None)
+            self.assertEquals(loader._get_filename(mod_name), mod.__file__)
         finally:
             z.close()
             os.remove(TEMP_ZIP)
diff --git a/Lib/test/test_zipimport_support.py b/Lib/test/test_zipimport_support.py
new file mode 100644
index 0000000..7942e37
--- /dev/null
+++ b/Lib/test/test_zipimport_support.py
@@ -0,0 +1,199 @@
+# This test module covers support in various parts of the standard library
+# for working with modules located inside zipfiles
+# The tests are centralised in this fashion to make it easy to drop them
+# if a platform doesn't support zipimport
+import unittest
+import test.support
+import os
+import os.path
+import sys
+import textwrap
+import zipfile
+import zipimport
+import doctest
+import inspect
+import linecache
+import pdb
+
+verbose = test.support.verbose
+
+# Library modules covered by this test set
+#  pdb (Issue 4201)
+#  inspect (Issue 4223)
+#  doctest (Issue 4197)
+
+# Other test modules with zipimport related tests
+#  test_zipimport (of course!)
+#  test_cmd_line_script (covers the zipimport support in runpy)
+
+# Retrieve some helpers from other test cases
+from test import test_doctest, sample_doctest
+from test.test_importhooks import ImportHooksBaseTestCase
+from test.test_cmd_line_script import temp_dir, _run_python,        \
+                                      _spawn_python, _kill_python,  \
+                                      _make_test_script,            \
+                                      _compile_test_script,         \
+                                      _make_test_zip, _make_test_pkg
+
+
+def _run_object_doctest(obj, module):
+    # Direct doctest output (normally just errors) to real stdout; doctest
+    # output shouldn't be compared by regrtest.
+    save_stdout = sys.stdout
+    sys.stdout = test.support.get_original_stdout()
+    try:
+        finder = doctest.DocTestFinder(verbose=verbose, recurse=False)
+        runner = doctest.DocTestRunner(verbose=verbose)
+        # Use the object's fully qualified name if it has one
+        # Otherwise, use the module's name
+        try:
+            name = "%s.%s" % (obj.__module__, obj.__name__)
+        except AttributeError:
+            name = module.__name__
+        for example in finder.find(obj, name, module):
+            runner.run(example)
+        f, t = runner.failures, runner.tries
+        if f:
+            raise test.support.TestFailed("%d of %d doctests failed" % (f, t))
+    finally:
+        sys.stdout = save_stdout
+    if verbose:
+        print ('doctest (%s) ... %d tests with zero failures' % (module.__name__, t))
+    return f, t
+
+
+
+class ZipSupportTests(ImportHooksBaseTestCase):
+    # We use the ImportHooksBaseTestCase to restore
+    # the state of the import related information
+    # in the sys module after each test
+    # We also clear the linecache and zipimport cache
+    # just to avoid any bogus errors due to name reuse in the tests
+    def setUp(self):
+        linecache.clearcache()
+        zipimport._zip_directory_cache.clear()
+        ImportHooksBaseTestCase.setUp(self)
+
+
+    def test_inspect_getsource_issue4223(self):
+        test_src = "def foo(): pass\n"
+        with temp_dir() as d:
+            init_name = _make_test_script(d, '__init__', test_src)
+            name_in_zip = os.path.join('zip_pkg',
+                                       os.path.basename(init_name))
+            zip_name, run_name = _make_test_zip(d, 'test_zip',
+                                                init_name, name_in_zip)
+            os.remove(init_name)
+            sys.path.insert(0, zip_name)
+            import zip_pkg
+            self.assertEqual(inspect.getsource(zip_pkg.foo), test_src)
+
+    def test_doctest_issue4197(self):
+        # To avoid having to keep two copies of the doctest module's
+        # unit tests in sync, this test works by taking the source of
+        # test_doctest itself, rewriting it a bit to cope with a new
+        # location, and then throwing it in a zip file to make sure
+        # everything still works correctly
+        test_src = inspect.getsource(test_doctest)
+        test_src = test_src.replace(
+                         "from test import test_doctest",
+                         "import test_zipped_doctest as test_doctest")
+        test_src = test_src.replace("test.test_doctest",
+                                    "test_zipped_doctest")
+        test_src = test_src.replace("test.sample_doctest",
+                                    "sample_zipped_doctest")
+        sample_src = inspect.getsource(sample_doctest)
+        sample_src = sample_src.replace("test.test_doctest",
+                                        "test_zipped_doctest")
+        with temp_dir() as d:
+            script_name = _make_test_script(d, 'test_zipped_doctest',
+                                            test_src)
+            zip_name, run_name = _make_test_zip(d, 'test_zip',
+                                                script_name)
+            z = zipfile.ZipFile(zip_name, 'a')
+            z.writestr("sample_zipped_doctest.py", sample_src)
+            z.close()
+            if verbose:
+                zip_file = zipfile.ZipFile(zip_name, 'r')
+                print ('Contents of %r:' % zip_name)
+                zip_file.printdir()
+                zip_file.close()
+            os.remove(script_name)
+            sys.path.insert(0, zip_name)
+            import test_zipped_doctest
+            # Some of the doc tests depend on the colocated text files
+            # which aren't available to the zipped version (the doctest
+            # module currently requires real filenames for non-embedded
+            # tests). So we're forced to be selective about which tests
+            # to run.
+            # doctest could really use some APIs which take a text
+            # string or a file object instead of a filename...
+            known_good_tests = [
+                test_zipped_doctest.SampleClass,
+                test_zipped_doctest.SampleClass.NestedClass,
+                test_zipped_doctest.SampleClass.NestedClass.__init__,
+                test_zipped_doctest.SampleClass.__init__,
+                test_zipped_doctest.SampleClass.a_classmethod,
+                test_zipped_doctest.SampleClass.a_property,
+                test_zipped_doctest.SampleClass.a_staticmethod,
+                test_zipped_doctest.SampleClass.double,
+                test_zipped_doctest.SampleClass.get,
+                test_zipped_doctest.SampleNewStyleClass,
+                test_zipped_doctest.SampleNewStyleClass.__init__,
+                test_zipped_doctest.SampleNewStyleClass.double,
+                test_zipped_doctest.SampleNewStyleClass.get,
+                test_zipped_doctest.sample_func,
+                test_zipped_doctest.test_DocTest,
+                test_zipped_doctest.test_DocTestParser,
+                test_zipped_doctest.test_DocTestRunner.basics,
+                test_zipped_doctest.test_DocTestRunner.exceptions,
+                test_zipped_doctest.test_DocTestRunner.option_directives,
+                test_zipped_doctest.test_DocTestRunner.optionflags,
+                test_zipped_doctest.test_DocTestRunner.verbose_flag,
+                test_zipped_doctest.test_Example,
+                test_zipped_doctest.test_debug,
+                test_zipped_doctest.test_pdb_set_trace,
+                test_zipped_doctest.test_pdb_set_trace_nested,
+                test_zipped_doctest.test_testsource,
+                test_zipped_doctest.test_trailing_space_in_test,
+                test_zipped_doctest.test_DocTestSuite,
+                test_zipped_doctest.test_DocTestFinder,
+            ]
+            # These remaining tests are the ones which need access
+            # to the data files, so we don't run them
+            fail_due_to_missing_data_files = [
+                test_zipped_doctest.test_DocFileSuite,
+                test_zipped_doctest.test_testfile,
+                test_zipped_doctest.test_unittest_reportflags,
+            ]
+            for obj in known_good_tests:
+                _run_object_doctest(obj, test_zipped_doctest)
+
+    def test_pdb_issue4201(self):
+        test_src = textwrap.dedent("""\
+                    def f():
+                        pass
+
+                    import pdb
+                    pdb.runcall(f)
+                    """)
+        with temp_dir() as d:
+            script_name = _make_test_script(d, 'script', test_src)
+            p = _spawn_python(script_name)
+            p.stdin.write(b'l\n')
+            data = _kill_python(p).decode()
+            self.assert_(script_name in data)
+            zip_name, run_name = _make_test_zip(d, "test_zip",
+                                                script_name, '__main__.py')
+            p = _spawn_python(zip_name)
+            p.stdin.write(b'l\n')
+            data = _kill_python(p).decode()
+            self.assert_(run_name in data)
+
+
+def test_main():
+    test.support.run_unittest(ZipSupportTests)
+    test.support.reap_children()
+
+if __name__ == '__main__':
+    test_main()