diff --git a/modules/matlab/CMakeLists.txt b/modules/matlab/CMakeLists.txt
index b6846a40e6..5790aed442 100644
--- a/modules/matlab/CMakeLists.txt
+++ b/modules/matlab/CMakeLists.txt
@@ -18,7 +18,7 @@ string(REPLACE "opencv_" "" OPENCV_MATLAB_MODULES "${OPENCV_MODULE_${the_module}
                                                    ${OPENCV_MODULE_${the_module}_OPT_DEPS}")
 foreach(module ${OPENCV_MATLAB_MODULES})
     if (HAVE_opencv_${module})
-        list(APPEND opencv_hdrs "${OPENCV_MODULE_opencv_${module}_LOCATION}/include/opencv2/${module}/${module}.hpp")
+        list(APPEND opencv_hdrs "${OPENCV_MODULE_opencv_${module}_LOCATION}/include/opencv2/${module}.hpp")
     endif()
 endforeach()
 
diff --git a/modules/matlab/generator/jinja2/AUTHORS b/modules/matlab/generator/jinja2/AUTHORS
index c6cd9ba2d1..943f625f87 100644
--- a/modules/matlab/generator/jinja2/AUTHORS
+++ b/modules/matlab/generator/jinja2/AUTHORS
@@ -29,3 +29,5 @@ Patches and suggestions:
 - Peter van Dijk (Habbie)
 - Stefan Ebner
 - Rene Leonhardt
+- Thomas Waldmann
+- Cory Benfield (Lukasa)
diff --git a/modules/matlab/generator/jinja2/__init__.py b/modules/matlab/generator/jinja2/__init__.py
index 5b349d6678..8434dea180 100644
--- a/modules/matlab/generator/jinja2/__init__.py
+++ b/modules/matlab/generator/jinja2/__init__.py
@@ -27,7 +27,7 @@
     :license: BSD, see LICENSE for more details.
 """
 __docformat__ = 'restructuredtext en'
-__version__ = '2.7-dev'
+__version__ = '2.8-dev'
 
 # high level interface
 from jinja2.environment import Environment, Template
diff --git a/modules/matlab/generator/jinja2/_compat.py b/modules/matlab/generator/jinja2/_compat.py
new file mode 100644
index 0000000000..1326cbc661
--- /dev/null
+++ b/modules/matlab/generator/jinja2/_compat.py
@@ -0,0 +1,109 @@
+# -*- coding: utf-8 -*-
+"""
+    jinja2._compat
+    ~~~~~~~~~~~~~~
+
+    Some py2/py3 compatibility support based on a stripped down
+    version of six so we don't have to depend on a specific version
+    of it.
+
+    :copyright: Copyright 2013 by the Jinja team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+import sys
+
+PY2 = sys.version_info[0] == 2
+PYPY = hasattr(sys, 'pypy_translation_info')
+_identity = lambda x: x
+
+
+if not PY2:
+    unichr = chr
+    range_type = range
+    text_type = str
+    string_types = (str,)
+
+    iterkeys = lambda d: iter(d.keys())
+    itervalues = lambda d: iter(d.values())
+    iteritems = lambda d: iter(d.items())
+
+    import pickle
+    from io import BytesIO, StringIO
+    NativeStringIO = StringIO
+
+    def reraise(tp, value, tb=None):
+        if value.__traceback__ is not tb:
+            raise value.with_traceback(tb)
+        raise value
+
+    ifilter = filter
+    imap = map
+    izip = zip
+    intern = sys.intern
+
+    implements_iterator = _identity
+    implements_to_string = _identity
+    encode_filename = _identity
+    get_next = lambda x: x.__next__
+
+else:
+    unichr = unichr
+    text_type = unicode
+    range_type = xrange
+    string_types = (str, unicode)
+
+    iterkeys = lambda d: d.iterkeys()
+    itervalues = lambda d: d.itervalues()
+    iteritems = lambda d: d.iteritems()
+
+    import cPickle as pickle
+    from cStringIO import StringIO as BytesIO, StringIO
+    NativeStringIO = BytesIO
+
+    exec('def reraise(tp, value, tb=None):\n raise tp, value, tb')
+
+    from itertools import imap, izip, ifilter
+    intern = intern
+
+    def implements_iterator(cls):
+        cls.next = cls.__next__
+        del cls.__next__
+        return cls
+
+    def implements_to_string(cls):
+        cls.__unicode__ = cls.__str__
+        cls.__str__ = lambda x: x.__unicode__().encode('utf-8')
+        return cls
+
+    get_next = lambda x: x.next
+
+    def encode_filename(filename):
+        if isinstance(filename, unicode):
+            return filename.encode('utf-8')
+        return filename
+
+
+def with_metaclass(meta, *bases):
+    # This requires a bit of explanation: the basic idea is to make a
+    # dummy metaclass for one level of class instanciation that replaces
+    # itself with the actual metaclass.  Because of internal type checks
+    # we also need to make sure that we downgrade the custom metaclass
+    # for one level to something closer to type (that's why __call__ and
+    # __init__ comes back from type etc.).
+    #
+    # This has the advantage over six.with_metaclass in that it does not
+    # introduce dummy classes into the final MRO.
+    class metaclass(meta):
+        __call__ = type.__call__
+        __init__ = type.__init__
+        def __new__(cls, name, this_bases, d):
+            if this_bases is None:
+                return type.__new__(cls, name, (), d)
+            return meta(name, bases, d)
+    return metaclass('temporary_class', None, {})
+
+
+try:
+    from urllib.parse import quote_from_bytes as url_quote
+except ImportError:
+    from urllib import quote as url_quote
diff --git a/modules/matlab/generator/jinja2/_markupsafe/_bundle.py b/modules/matlab/generator/jinja2/_markupsafe/_bundle.py
deleted file mode 100644
index e694faf23d..0000000000
--- a/modules/matlab/generator/jinja2/_markupsafe/_bundle.py
+++ /dev/null
@@ -1,49 +0,0 @@
-# -*- coding: utf-8 -*-
-"""
-    jinja2._markupsafe._bundle
-    ~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-    This script pulls in markupsafe from a source folder and
-    bundles it with Jinja2.  It does not pull in the speedups
-    module though.
-
-    :copyright: Copyright 2010 by the Jinja team, see AUTHORS.
-    :license: BSD, see LICENSE for details.
-"""
-import sys
-import os
-import re
-
-
-def rewrite_imports(lines):
-    for idx, line in enumerate(lines):
-        new_line = re.sub(r'(import|from)\s+markupsafe\b',
-                          r'\1 jinja2._markupsafe', line)
-        if new_line != line:
-            lines[idx] = new_line
-
-
-def main():
-    if len(sys.argv) != 2:
-        print 'error: only argument is path to markupsafe'
-        sys.exit(1)
-    basedir = os.path.dirname(__file__)
-    markupdir = sys.argv[1]
-    for filename in os.listdir(markupdir):
-        if filename.endswith('.py'):
-            f = open(os.path.join(markupdir, filename))
-            try:
-                lines = list(f)
-            finally:
-                f.close()
-            rewrite_imports(lines)
-            f = open(os.path.join(basedir, filename), 'w')
-            try:
-                for line in lines:
-                    f.write(line)
-            finally:
-                f.close()
-
-
-if __name__ == '__main__':
-    main()
diff --git a/modules/matlab/generator/jinja2/bccache.py b/modules/matlab/generator/jinja2/bccache.py
index 0b0ccad1f2..b534e27123 100644
--- a/modules/matlab/generator/jinja2/bccache.py
+++ b/modules/matlab/generator/jinja2/bccache.py
@@ -18,22 +18,17 @@ from os import path, listdir
 import sys
 import marshal
 import tempfile
-import cPickle as pickle
 import fnmatch
-try:
-    from hashlib import sha1
-except ImportError:
-    from sha import new as sha1
+from hashlib import sha1
 from jinja2.utils import open_if_exists
+from jinja2._compat import BytesIO, pickle, PY2
 
 
 # marshal works better on 3.x, one hack less required
-if sys.version_info > (3, 0):
-    from io import BytesIO
+if not PY2:
     marshal_dump = marshal.dump
     marshal_load = marshal.load
 else:
-    from cStringIO import StringIO as BytesIO
 
     def marshal_dump(code, f):
         if isinstance(f, file):
@@ -282,15 +277,26 @@ class MemcachedBytecodeCache(BytecodeCache):
 
     This bytecode cache does not support clearing of used items in the cache.
     The clear method is a no-operation function.
+
+    .. versionadded:: 2.7
+       Added support for ignoring memcache errors through the
+       `ignore_memcache_errors` parameter.
     """
 
-    def __init__(self, client, prefix='jinja2/bytecode/', timeout=None):
+    def __init__(self, client, prefix='jinja2/bytecode/', timeout=None,
+                 ignore_memcache_errors=True):
         self.client = client
         self.prefix = prefix
         self.timeout = timeout
+        self.ignore_memcache_errors = ignore_memcache_errors
 
     def load_bytecode(self, bucket):
-        code = self.client.get(self.prefix + bucket.key)
+        try:
+            code = self.client.get(self.prefix + bucket.key)
+        except Exception:
+            if not self.ignore_memcache_errors:
+                raise
+            code = None
         if code is not None:
             bucket.bytecode_from_string(code)
 
@@ -298,4 +304,8 @@ class MemcachedBytecodeCache(BytecodeCache):
         args = (self.prefix + bucket.key, bucket.bytecode_to_string())
         if self.timeout is not None:
             args += (self.timeout,)
-        self.client.set(*args)
+        try:
+            self.client.set(*args)
+        except Exception:
+            if not self.ignore_memcache_errors:
+                raise
diff --git a/modules/matlab/generator/jinja2/compiler.py b/modules/matlab/generator/jinja2/compiler.py
index b21cb3865d..ad34178832 100644
--- a/modules/matlab/generator/jinja2/compiler.py
+++ b/modules/matlab/generator/jinja2/compiler.py
@@ -8,14 +8,16 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD, see LICENSE for more details.
 """
-from cStringIO import StringIO
 from itertools import chain
 from copy import deepcopy
+from keyword import iskeyword as is_python_keyword
 from jinja2 import nodes
 from jinja2.nodes import EvalContext
 from jinja2.visitor import NodeVisitor
 from jinja2.exceptions import TemplateAssertionError
-from jinja2.utils import Markup, concat, escape, is_python_keyword, next
+from jinja2.utils import Markup, concat, escape
+from jinja2._compat import range_type, text_type, string_types, \
+     iteritems, NativeStringIO, imap
 
 
 operators = {
@@ -29,14 +31,6 @@ operators = {
     'notin':    'not in'
 }
 
-try:
-    exec '(0 if 0 else 0)'
-except SyntaxError:
-    have_condexpr = False
-else:
-    have_condexpr = True
-
-
 # what method to iterate over items do we want to use for dict iteration
 # in generated code?  on 2.x let's go with iteritems, on 3.x with items
 if hasattr(dict, 'iteritems'):
@@ -51,7 +45,11 @@ def unoptimize_before_dead_code():
     def f():
         if 0: dummy(x)
     return f
-unoptimize_before_dead_code = bool(unoptimize_before_dead_code().func_closure)
+
+# The getattr is necessary for pypy which does not set this attribute if
+# no closure is on the function
+unoptimize_before_dead_code = bool(
+    getattr(unoptimize_before_dead_code(), '__closure__', None))
 
 
 def generate(node, environment, name, filename, stream=None,
@@ -69,8 +67,8 @@ def has_safe_repr(value):
     """Does the node have a safe representation?"""
     if value is None or value is NotImplemented or value is Ellipsis:
         return True
-    if isinstance(value, (bool, int, long, float, complex, basestring,
-                          xrange, Markup)):
+    if isinstance(value, (bool, int, float, complex, range_type,
+            Markup) + string_types):
         return True
     if isinstance(value, (tuple, list, set, frozenset)):
         for item in value:
@@ -78,7 +76,7 @@ def has_safe_repr(value):
                 return False
         return True
     elif isinstance(value, dict):
-        for key, value in value.iteritems():
+        for key, value in iteritems(value):
             if not has_safe_repr(key):
                 return False
             if not has_safe_repr(value):
@@ -368,7 +366,7 @@ class CodeGenerator(NodeVisitor):
     def __init__(self, environment, name, filename, stream=None,
                  defer_init=False):
         if stream is None:
-            stream = StringIO()
+            stream = NativeStringIO()
         self.environment = environment
         self.name = name
         self.filename = filename
@@ -542,7 +540,7 @@ class CodeGenerator(NodeVisitor):
                 self.write(', ')
                 self.visit(kwarg, frame)
             if extra_kwargs is not None:
-                for key, value in extra_kwargs.iteritems():
+                for key, value in iteritems(extra_kwargs):
                     self.write(', %s=%s' % (key, value))
         if node.dyn_args:
             self.write(', *')
@@ -558,7 +556,7 @@ class CodeGenerator(NodeVisitor):
                 self.visit(kwarg.value, frame)
                 self.write(', ')
             if extra_kwargs is not None:
-                for key, value in extra_kwargs.iteritems():
+                for key, value in iteritems(extra_kwargs):
                     self.write('%r: %s, ' % (key, value))
             if node.dyn_kwargs is not None:
                 self.write('}, **')
@@ -625,7 +623,7 @@ class CodeGenerator(NodeVisitor):
 
     def pop_scope(self, aliases, frame):
         """Restore all aliases and delete unused variables."""
-        for name, alias in aliases.iteritems():
+        for name, alias in iteritems(aliases):
             self.writeline('l_%s = %s' % (name, alias))
         to_delete = set()
         for name in frame.identifiers.declared_locally:
@@ -663,16 +661,16 @@ class CodeGenerator(NodeVisitor):
         # it without aliasing all the variables.
         # this could be fixed in Python 3 where we have the nonlocal
         # keyword or if we switch to bytecode generation
-        overriden_closure_vars = (
+        overridden_closure_vars = (
             func_frame.identifiers.undeclared &
             func_frame.identifiers.declared &
             (func_frame.identifiers.declared_locally |
              func_frame.identifiers.declared_parameter)
         )
-        if overriden_closure_vars:
+        if overridden_closure_vars:
             self.fail('It\'s not possible to set and access variables '
                       'derived from an outer scope! (affects: %s)' %
-                      ', '.join(sorted(overriden_closure_vars)), node.lineno)
+                      ', '.join(sorted(overridden_closure_vars)), node.lineno)
 
         # remove variables from a closure from the frame's undeclared
         # identifiers.
@@ -827,7 +825,7 @@ class CodeGenerator(NodeVisitor):
             self.outdent(2 + (not self.has_known_extends))
 
         # at this point we now have the blocks collected and can visit them too.
-        for name, block in self.blocks.iteritems():
+        for name, block in iteritems(self.blocks):
             block_frame = Frame(eval_ctx)
             block_frame.inspect(block.body)
             block_frame.block = name
@@ -894,12 +892,13 @@ class CodeGenerator(NodeVisitor):
                 self.indent()
             self.writeline('raise TemplateRuntimeError(%r)' %
                            'extended multiple times')
-            self.outdent()
 
             # if we have a known extends already we don't need that code here
             # as we know that the template execution will end here.
             if self.has_known_extends:
                 raise CompilerExit()
+            else:
+                self.outdent()
 
         self.writeline('parent_template = environment.get_template(', node)
         self.visit(node.template, frame)
@@ -930,7 +929,7 @@ class CodeGenerator(NodeVisitor):
 
         func_name = 'get_or_select_template'
         if isinstance(node.template, nodes.Const):
-            if isinstance(node.template.value, basestring):
+            if isinstance(node.template.value, string_types):
                 func_name = 'get_template'
             elif isinstance(node.template.value, (tuple, list)):
                 func_name = 'select_template'
@@ -950,9 +949,16 @@ class CodeGenerator(NodeVisitor):
             self.indent()
 
         if node.with_context:
+            self.writeline('include_context = template.new_context('
+                           'context.parent, True, locals())')
+            self.writeline('for name, context_blocks in context.'
+                           'blocks.%s():' % dict_item_iter)
+            self.indent()
+            self.writeline('include_context.blocks.setdefault('
+                           'name, [])[0:0] = context_blocks')
+            self.outdent()
             self.writeline('for event in template.root_render_func('
-                           'template.new_context(context.parent, True, '
-                           'locals())):')
+                           'include_context):')
         else:
             self.writeline('for event in template.module._body_stream:')
 
@@ -1032,7 +1038,7 @@ class CodeGenerator(NodeVisitor):
                                discarded_names[0])
             else:
                 self.writeline('context.exported_vars.difference_'
-                               'update((%s))' % ', '.join(map(repr, discarded_names)))
+                               'update((%s))' % ', '.join(imap(repr, discarded_names)))
 
     def visit_For(self, node, frame):
         # when calculating the nodes for the inner frame we have to exclude
@@ -1060,7 +1066,7 @@ class CodeGenerator(NodeVisitor):
 
         # otherwise we set up a buffer and add a function def
         else:
-            self.writeline('def loop(reciter, loop_render_func):', node)
+            self.writeline('def loop(reciter, loop_render_func, depth=0):', node)
             self.indent()
             self.buffer(loop_frame)
             aliases = {}
@@ -1068,6 +1074,7 @@ class CodeGenerator(NodeVisitor):
         # make sure the loop variable is a special one and raise a template
         # assertion error if a loop tries to write to loop
         if extended_loop:
+            self.writeline('l_loop = missing')
             loop_frame.identifiers.add_special('loop')
         for name in node.find_all(nodes.Name):
             if name.ctx == 'store' and name.name == 'loop':
@@ -1118,7 +1125,7 @@ class CodeGenerator(NodeVisitor):
             self.visit(node.iter, loop_frame)
 
         if node.recursive:
-            self.write(', recurse=loop_render_func):')
+            self.write(', loop_render_func, depth):')
         else:
             self.write(extended_loop and '):' or ':')
 
@@ -1216,9 +1223,9 @@ class CodeGenerator(NodeVisitor):
             return
 
         if self.environment.finalize:
-            finalize = lambda x: unicode(self.environment.finalize(x))
+            finalize = lambda x: text_type(self.environment.finalize(x))
         else:
-            finalize = unicode
+            finalize = text_type
 
         # if we are inside a frame that requires output checking, we do so
         outdent_later = False
@@ -1367,7 +1374,7 @@ class CodeGenerator(NodeVisitor):
                                    public_names[0])
                 else:
                     self.writeline('context.exported_vars.update((%s))' %
-                                   ', '.join(map(repr, public_names)))
+                                   ', '.join(imap(repr, public_names)))
 
     # -- Expression Visitors
 
@@ -1555,22 +1562,13 @@ class CodeGenerator(NodeVisitor):
                        'expression on %s evaluated to false and '
                        'no else section was defined.' % self.position(node)))
 
-        if not have_condexpr:
-            self.write('((')
-            self.visit(node.test, frame)
-            self.write(') and (')
-            self.visit(node.expr1, frame)
-            self.write(',) or (')
-            write_expr2()
-            self.write(',))[0]')
-        else:
-            self.write('(')
-            self.visit(node.expr1, frame)
-            self.write(' if ')
-            self.visit(node.test, frame)
-            self.write(' else ')
-            write_expr2()
-            self.write(')')
+        self.write('(')
+        self.visit(node.expr1, frame)
+        self.write(' if ')
+        self.visit(node.test, frame)
+        self.write(' else ')
+        write_expr2()
+        self.write(')')
 
     def visit_Call(self, node, frame, forward_caller=False):
         if self.environment.sandboxed:
diff --git a/modules/matlab/generator/jinja2/defaults.py b/modules/matlab/generator/jinja2/defaults.py
index 92de56ab23..4ab9390b3b 100644
--- a/modules/matlab/generator/jinja2/defaults.py
+++ b/modules/matlab/generator/jinja2/defaults.py
@@ -8,6 +8,7 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD, see LICENSE for more details.
 """
+from jinja2._compat import range_type
 from jinja2.utils import generate_lorem_ipsum, Cycler, Joiner
 
 
@@ -21,13 +22,15 @@ COMMENT_END_STRING = '#}'
 LINE_STATEMENT_PREFIX = None
 LINE_COMMENT_PREFIX = None
 TRIM_BLOCKS = False
+LSTRIP_BLOCKS = False
 NEWLINE_SEQUENCE = '\n'
+KEEP_TRAILING_NEWLINE = False
 
 
 # default filters, tests and namespace
 from jinja2.filters import FILTERS as DEFAULT_FILTERS
 DEFAULT_NAMESPACE = {
-    'range':        xrange,
+    'range':        range_type,
     'dict':         lambda **kw: kw,
     'lipsum':       generate_lorem_ipsum,
     'cycler':       Cycler,
diff --git a/modules/matlab/generator/jinja2/environment.py b/modules/matlab/generator/jinja2/environment.py
index f279acec4f..f25aaf4136 100644
--- a/modules/matlab/generator/jinja2/environment.py
+++ b/modules/matlab/generator/jinja2/environment.py
@@ -11,16 +11,26 @@
 import os
 import sys
 from jinja2 import nodes
-from jinja2.defaults import *
+from jinja2.defaults import BLOCK_START_STRING, \
+     BLOCK_END_STRING, VARIABLE_START_STRING, VARIABLE_END_STRING, \
+     COMMENT_START_STRING, COMMENT_END_STRING, LINE_STATEMENT_PREFIX, \
+     LINE_COMMENT_PREFIX, TRIM_BLOCKS, NEWLINE_SEQUENCE, \
+     DEFAULT_FILTERS, DEFAULT_NAMESPACE, \
+     KEEP_TRAILING_NEWLINE, LSTRIP_BLOCKS
 from jinja2.lexer import get_lexer, TokenStream
 from jinja2.parser import Parser
+from jinja2.nodes import EvalContext
 from jinja2.optimizer import optimize
 from jinja2.compiler import generate
 from jinja2.runtime import Undefined, new_context
 from jinja2.exceptions import TemplateSyntaxError, TemplateNotFound, \
-     TemplatesNotFound
+     TemplatesNotFound, TemplateRuntimeError
 from jinja2.utils import import_string, LRUCache, Markup, missing, \
-     concat, consume, internalcode, _encode_filename
+     concat, consume, internalcode
+from jinja2._compat import imap, ifilter, string_types, iteritems, \
+     text_type, reraise, implements_iterator, implements_to_string, \
+     get_next, encode_filename, PY2, PYPY
+from functools import reduce
 
 
 # for direct template usage we have up to ten living environments
@@ -71,7 +81,7 @@ def load_extensions(environment, extensions):
     """
     result = {}
     for extension in extensions:
-        if isinstance(extension, basestring):
+        if isinstance(extension, string_types):
             extension = import_string(extension)
         result[extension.identifier] = extension(environment)
     return result
@@ -134,12 +144,23 @@ class Environment(object):
             If this is set to ``True`` the first newline after a block is
             removed (block, not variable tag!).  Defaults to `False`.
 
+        `lstrip_blocks`
+            If this is set to ``True`` leading spaces and tabs are stripped
+            from the start of a line to a block.  Defaults to `False`.
+
         `newline_sequence`
             The sequence that starts a newline.  Must be one of ``'\r'``,
             ``'\n'`` or ``'\r\n'``.  The default is ``'\n'`` which is a
             useful default for Linux and OS X systems as well as web
             applications.
 
+        `keep_trailing_newline`
+            Preserve the trailing newline when rendering templates.
+            The default is ``False``, which causes a single newline,
+            if present, to be stripped from the end of the template.
+
+            .. versionadded:: 2.7
+
         `extensions`
             List of Jinja extensions to use.  This can either be import paths
             as strings or extension classes.  For more information have a
@@ -224,7 +245,9 @@ class Environment(object):
                  line_statement_prefix=LINE_STATEMENT_PREFIX,
                  line_comment_prefix=LINE_COMMENT_PREFIX,
                  trim_blocks=TRIM_BLOCKS,
+                 lstrip_blocks=LSTRIP_BLOCKS,
                  newline_sequence=NEWLINE_SEQUENCE,
+                 keep_trailing_newline=KEEP_TRAILING_NEWLINE,
                  extensions=(),
                  optimized=True,
                  undefined=Undefined,
@@ -255,7 +278,9 @@ class Environment(object):
         self.line_statement_prefix = line_statement_prefix
         self.line_comment_prefix = line_comment_prefix
         self.trim_blocks = trim_blocks
+        self.lstrip_blocks = lstrip_blocks
         self.newline_sequence = newline_sequence
+        self.keep_trailing_newline = keep_trailing_newline
 
         # runtime information
         self.undefined = undefined
@@ -269,7 +294,6 @@ class Environment(object):
 
         # set the loader provided
         self.loader = loader
-        self.bytecode_cache = None
         self.cache = create_cache(cache_size)
         self.bytecode_cache = bytecode_cache
         self.auto_reload = auto_reload
@@ -291,7 +315,7 @@ class Environment(object):
         yet.  This is used by :ref:`extensions <writing-extensions>` to register
         callbacks and configuration values without breaking inheritance.
         """
-        for key, value in attributes.iteritems():
+        for key, value in iteritems(attributes):
             if not hasattr(self, key):
                 setattr(self, key, value)
 
@@ -299,7 +323,8 @@ class Environment(object):
                 variable_start_string=missing, variable_end_string=missing,
                 comment_start_string=missing, comment_end_string=missing,
                 line_statement_prefix=missing, line_comment_prefix=missing,
-                trim_blocks=missing, extensions=missing, optimized=missing,
+                trim_blocks=missing, lstrip_blocks=missing,
+                extensions=missing, optimized=missing,
                 undefined=missing, finalize=missing, autoescape=missing,
                 loader=missing, cache_size=missing, auto_reload=missing,
                 bytecode_cache=missing):
@@ -322,7 +347,7 @@ class Environment(object):
         rv.overlayed = True
         rv.linked_to = self
 
-        for key, value in args.iteritems():
+        for key, value in iteritems(args):
             if value is not missing:
                 setattr(rv, key, value)
 
@@ -332,7 +357,7 @@ class Environment(object):
             rv.cache = copy_cache(self.cache)
 
         rv.extensions = {}
-        for key, value in self.extensions.iteritems():
+        for key, value in iteritems(self.extensions):
             rv.extensions[key] = value.bind(rv)
         if extensions is not missing:
             rv.extensions.update(load_extensions(rv, extensions))
@@ -351,7 +376,7 @@ class Environment(object):
         try:
             return obj[argument]
         except (TypeError, LookupError):
-            if isinstance(argument, basestring):
+            if isinstance(argument, string_types):
                 try:
                     attr = str(argument)
                 except Exception:
@@ -376,6 +401,42 @@ class Environment(object):
         except (TypeError, LookupError, AttributeError):
             return self.undefined(obj=obj, name=attribute)
 
+    def call_filter(self, name, value, args=None, kwargs=None,
+                    context=None, eval_ctx=None):
+        """Invokes a filter on a value the same way the compiler does it.
+
+        .. versionadded:: 2.7
+        """
+        func = self.filters.get(name)
+        if func is None:
+            raise TemplateRuntimeError('no filter named %r' % name)
+        args = list(args or ())
+        if getattr(func, 'contextfilter', False):
+            if context is None:
+                raise TemplateRuntimeError('Attempted to invoke context '
+                                           'filter without context')
+            args.insert(0, context)
+        elif getattr(func, 'evalcontextfilter', False):
+            if eval_ctx is None:
+                if context is not None:
+                    eval_ctx = context.eval_ctx
+                else:
+                    eval_ctx = EvalContext(self)
+            args.insert(0, eval_ctx)
+        elif getattr(func, 'environmentfilter', False):
+            args.insert(0, self)
+        return func(value, *args, **(kwargs or {}))
+
+    def call_test(self, name, value, args=None, kwargs=None):
+        """Invokes a test on a value the same way the compiler does it.
+
+        .. versionadded:: 2.7
+        """
+        func = self.tests.get(name)
+        if func is None:
+            raise TemplateRuntimeError('no test named %r' % name)
+        return func(value, *(args or ()), **(kwargs or {}))
+
     @internalcode
     def parse(self, source, name=None, filename=None):
         """Parse the sourcecode and return the abstract syntax tree.  This
@@ -394,7 +455,7 @@ class Environment(object):
 
     def _parse(self, source, name, filename):
         """Internal parsing function used by `parse` and `compile`."""
-        return Parser(self, source, name, _encode_filename(filename)).parse()
+        return Parser(self, source, name, encode_filename(filename)).parse()
 
     def lex(self, source, name=None, filename=None):
         """Lex the given sourcecode and return a generator that yields
@@ -406,7 +467,7 @@ class Environment(object):
         of the extensions to be applied you have to filter source through
         the :meth:`preprocess` method.
         """
-        source = unicode(source)
+        source = text_type(source)
         try:
             return self.lexer.tokeniter(source, name, filename)
         except TemplateSyntaxError:
@@ -419,7 +480,7 @@ class Environment(object):
         because there you usually only want the actual source tokenized.
         """
         return reduce(lambda s, e: e.preprocess(s, name, filename),
-                      self.iter_extensions(), unicode(source))
+                      self.iter_extensions(), text_type(source))
 
     def _tokenize(self, source, name, filename=None, state=None):
         """Called by the parser to do the preprocessing and filtering
@@ -473,7 +534,7 @@ class Environment(object):
         """
         source_hint = None
         try:
-            if isinstance(source, basestring):
+            if isinstance(source, string_types):
                 source_hint = source
                 source = self._parse(source, name, filename)
             if self.optimized:
@@ -485,7 +546,7 @@ class Environment(object):
             if filename is None:
                 filename = '<template>'
             else:
-                filename = _encode_filename(filename)
+                filename = encode_filename(filename)
             return self._compile(source, filename)
         except TemplateSyntaxError:
             exc_info = sys.exc_info()
@@ -555,7 +616,9 @@ class Environment(object):
         to `False` and you will get an exception on syntax errors.
 
         If `py_compile` is set to `True` .pyc files will be written to the
-        target instead of standard .py files.
+        target instead of standard .py files.  This flag does not do anything
+        on pypy and Python 3 where pyc files are not picked up by itself and
+        don't give much benefit.
 
         .. versionadded:: 2.4
         """
@@ -565,18 +628,23 @@ class Environment(object):
             log_function = lambda x: None
 
         if py_compile:
-            import imp, marshal
-            py_header = imp.get_magic() + \
-                u'\xff\xff\xff\xff'.encode('iso-8859-15')
+            if not PY2 or PYPY:
+                from warnings import warn
+                warn(Warning('py_compile has no effect on pypy or Python 3'))
+                py_compile = False
+            else:
+                import imp, marshal
+                py_header = imp.get_magic() + \
+                    u'\xff\xff\xff\xff'.encode('iso-8859-15')
 
-            # Python 3.3 added a source filesize to the header
-            if sys.version_info >= (3, 3):
-                py_header += u'\x00\x00\x00\x00'.encode('iso-8859-15')
+                # Python 3.3 added a source filesize to the header
+                if sys.version_info >= (3, 3):
+                    py_header += u'\x00\x00\x00\x00'.encode('iso-8859-15')
 
         def write_file(filename, data, mode):
             if zip:
                 info = ZipInfo(filename)
-                info.external_attr = 0755 << 16L
+                info.external_attr = 0o755 << 16
                 zip_file.writestr(info, data)
             else:
                 f = open(os.path.join(target, filename), mode)
@@ -600,7 +668,7 @@ class Environment(object):
                 source, filename, _ = self.loader.get_source(self, name)
                 try:
                     code = self.compile(source, name, filename, True, True)
-                except TemplateSyntaxError, e:
+                except TemplateSyntaxError as e:
                     if not ignore_errors:
                         raise
                     log_function('Could not compile "%s": %s' % (name, e))
@@ -609,7 +677,7 @@ class Environment(object):
                 filename = ModuleLoader.get_module_filename(name)
 
                 if py_compile:
-                    c = self._compile(code, _encode_filename(filename))
+                    c = self._compile(code, encode_filename(filename))
                     write_file(filename + 'c', py_header +
                                marshal.dumps(c), 'wb')
                     log_function('Byte-compiled "%s" as %s' %
@@ -647,7 +715,7 @@ class Environment(object):
             filter_func = lambda x: '.' in x and \
                                     x.rsplit('.', 1)[1] in extensions
         if filter_func is not None:
-            x = filter(filter_func, x)
+            x = ifilter(filter_func, x)
         return x
 
     def handle_exception(self, exc_info=None, rendered=False, source_hint=None):
@@ -670,7 +738,7 @@ class Environment(object):
         if self.exception_handler is not None:
             self.exception_handler(traceback)
         exc_type, exc_value, tb = traceback.standard_exc_info
-        raise exc_type, exc_value, tb
+        reraise(exc_type, exc_value, tb)
 
     def join_path(self, template, parent):
         """Join a template with the parent.  By default all the lookups are
@@ -757,7 +825,7 @@ class Environment(object):
 
         .. versionadded:: 2.3
         """
-        if isinstance(template_name_or_list, basestring):
+        if isinstance(template_name_or_list, string_types):
             return self.get_template(template_name_or_list, parent, globals)
         elif isinstance(template_name_or_list, Template):
             return template_name_or_list
@@ -819,7 +887,9 @@ class Template(object):
                 line_statement_prefix=LINE_STATEMENT_PREFIX,
                 line_comment_prefix=LINE_COMMENT_PREFIX,
                 trim_blocks=TRIM_BLOCKS,
+                lstrip_blocks=LSTRIP_BLOCKS,
                 newline_sequence=NEWLINE_SEQUENCE,
+                keep_trailing_newline=KEEP_TRAILING_NEWLINE,
                 extensions=(),
                 optimized=True,
                 undefined=Undefined,
@@ -829,8 +899,9 @@ class Template(object):
             block_start_string, block_end_string, variable_start_string,
             variable_end_string, comment_start_string, comment_end_string,
             line_statement_prefix, line_comment_prefix, trim_blocks,
-            newline_sequence, frozenset(extensions), optimized, undefined,
-            finalize, autoescape, None, 0, False, None)
+            lstrip_blocks, newline_sequence, keep_trailing_newline,
+            frozenset(extensions), optimized, undefined, finalize, autoescape,
+            None, 0, False, None)
         return env.from_string(source, template_class=cls)
 
     @classmethod
@@ -842,7 +913,7 @@ class Template(object):
             'environment':  environment,
             '__file__':     code.co_filename
         }
-        exec code in namespace
+        exec(code, namespace)
         rv = cls._from_namespace(environment, namespace, globals)
         rv._uptodate = uptodate
         return rv
@@ -976,7 +1047,7 @@ class Template(object):
     @property
     def debug_info(self):
         """The debug info mapping."""
-        return [tuple(map(int, x.split('='))) for x in
+        return [tuple(imap(int, x.split('='))) for x in
                 self._debug_info.split('&')]
 
     def __repr__(self):
@@ -987,6 +1058,7 @@ class Template(object):
         return '<%s %s>' % (self.__class__.__name__, name)
 
 
+@implements_to_string
 class TemplateModule(object):
     """Represents an imported template.  All the exported names of the
     template are available as attributes on this object.  Additionally
@@ -1002,13 +1074,6 @@ class TemplateModule(object):
         return Markup(concat(self._body_stream))
 
     def __str__(self):
-        return unicode(self).encode('utf-8')
-
-    # unicode goes after __str__ because we configured 2to3 to rename
-    # __unicode__ to __str__.  because the 2to3 tree is not designed to
-    # remove nodes from it, we leave the above __str__ around and let
-    # it override at runtime.
-    def __unicode__(self):
         return concat(self._body_stream)
 
     def __repr__(self):
@@ -1038,6 +1103,7 @@ class TemplateExpression(object):
         return rv
 
 
+@implements_iterator
 class TemplateStream(object):
     """A template stream works pretty much like an ordinary python generator
     but it can buffer multiple items to reduce the number of total iterations.
@@ -1063,8 +1129,8 @@ class TemplateStream(object):
             Template('Hello {{ name }}!').stream(name='foo').dump('hello.html')
         """
         close = False
-        if isinstance(fp, basestring):
-            fp = file(fp, 'w')
+        if isinstance(fp, string_types):
+            fp = open(fp, encoding is None and 'w' or 'wb')
             close = True
         try:
             if encoding is not None:
@@ -1082,7 +1148,7 @@ class TemplateStream(object):
 
     def disable_buffering(self):
         """Disable the output buffering."""
-        self._next = self._gen.next
+        self._next = get_next(self._gen)
         self.buffered = False
 
     def enable_buffering(self, size=5):
@@ -1110,12 +1176,12 @@ class TemplateStream(object):
                 c_size = 0
 
         self.buffered = True
-        self._next = generator(self._gen.next).next
+        self._next = get_next(generator(get_next(self._gen)))
 
     def __iter__(self):
         return self
 
-    def next(self):
+    def __next__(self):
         return self._next()
 
 
diff --git a/modules/matlab/generator/jinja2/exceptions.py b/modules/matlab/generator/jinja2/exceptions.py
index 841aabbd12..c9df6dc7c2 100644
--- a/modules/matlab/generator/jinja2/exceptions.py
+++ b/modules/matlab/generator/jinja2/exceptions.py
@@ -8,24 +8,40 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD, see LICENSE for more details.
 """
+from jinja2._compat import imap, text_type, PY2, implements_to_string
 
 
 class TemplateError(Exception):
     """Baseclass for all template errors."""
 
-    def __init__(self, message=None):
-        if message is not None:
-            message = unicode(message).encode('utf-8')
-        Exception.__init__(self, message)
-
-    @property
-    def message(self):
-        if self.args:
-            message = self.args[0]
+    if PY2:
+        def __init__(self, message=None):
             if message is not None:
-                return message.decode('utf-8', 'replace')
-
-
+                message = text_type(message).encode('utf-8')
+            Exception.__init__(self, message)
+
+        @property
+        def message(self):
+            if self.args:
+                message = self.args[0]
+                if message is not None:
+                    return message.decode('utf-8', 'replace')
+
+        def __unicode__(self):
+            return self.message or u''
+    else:
+        def __init__(self, message=None):
+            Exception.__init__(self, message)
+
+        @property
+        def message(self):
+            if self.args:
+                message = self.args[0]
+                if message is not None:
+                    return message
+
+
+@implements_to_string
 class TemplateNotFound(IOError, LookupError, TemplateError):
     """Raised if a template does not exist."""
 
@@ -42,13 +58,6 @@ class TemplateNotFound(IOError, LookupError, TemplateError):
         self.templates = [name]
 
     def __str__(self):
-        return self.message.encode('utf-8')
-
-    # unicode goes after __str__ because we configured 2to3 to rename
-    # __unicode__ to __str__.  because the 2to3 tree is not designed to
-    # remove nodes from it, we leave the above __str__ around and let
-    # it override at runtime.
-    def __unicode__(self):
         return self.message
 
 
@@ -63,11 +72,12 @@ class TemplatesNotFound(TemplateNotFound):
     def __init__(self, names=(), message=None):
         if message is None:
             message = u'none of the templates given were found: ' + \
-                      u', '.join(map(unicode, names))
+                      u', '.join(imap(text_type, names))
         TemplateNotFound.__init__(self, names and names[-1] or None, message)
         self.templates = list(names)
 
 
+@implements_to_string
 class TemplateSyntaxError(TemplateError):
     """Raised to tell the user that there is a problem with the template."""
 
@@ -83,13 +93,6 @@ class TemplateSyntaxError(TemplateError):
         self.translated = False
 
     def __str__(self):
-        return unicode(self).encode('utf-8')
-
-    # unicode goes after __str__ because we configured 2to3 to rename
-    # __unicode__ to __str__.  because the 2to3 tree is not designed to
-    # remove nodes from it, we leave the above __str__ around and let
-    # it override at runtime.
-    def __unicode__(self):
         # for translated errors we only return the message
         if self.translated:
             return self.message
diff --git a/modules/matlab/generator/jinja2/filters.py b/modules/matlab/generator/jinja2/filters.py
index 8fef6eaa32..4ee4e04030 100644
--- a/modules/matlab/generator/jinja2/filters.py
+++ b/modules/matlab/generator/jinja2/filters.py
@@ -10,13 +10,15 @@
 """
 import re
 import math
+
 from random import choice
 from operator import itemgetter
-from itertools import imap, groupby
+from itertools import groupby
 from jinja2.utils import Markup, escape, pformat, urlize, soft_unicode, \
      unicode_urlencode
 from jinja2.runtime import Undefined
 from jinja2.exceptions import FilterArgumentError
+from jinja2._compat import imap, string_types, text_type, iteritems
 
 
 _word_re = re.compile(r'\w+(?u)')
@@ -52,13 +54,17 @@ def environmentfilter(f):
 def make_attrgetter(environment, attribute):
     """Returns a callable that looks up the given attribute from a
     passed object with the rules of the environment.  Dots are allowed
-    to access attributes of attributes.
+    to access attributes of attributes.  Integer parts in paths are
+    looked up as integers.
     """
-    if not isinstance(attribute, basestring) or '.' not in attribute:
+    if not isinstance(attribute, string_types) \
+       or ('.' not in attribute and not attribute.isdigit()):
         return lambda x: environment.getitem(x, attribute)
     attribute = attribute.split('.')
     def attrgetter(item):
         for part in attribute:
+            if part.isdigit():
+                part = int(part)
             item = environment.getitem(item, part)
         return item
     return attrgetter
@@ -68,7 +74,7 @@ def do_forceescape(value):
     """Enforce HTML escaping.  This will probably double escape variables."""
     if hasattr(value, '__html__'):
         value = value.__html__()
-    return escape(unicode(value))
+    return escape(text_type(value))
 
 
 def do_urlencode(value):
@@ -79,8 +85,8 @@ def do_urlencode(value):
     """
     itemiter = None
     if isinstance(value, dict):
-        itemiter = value.iteritems()
-    elif not isinstance(value, basestring):
+        itemiter = iteritems(value)
+    elif not isinstance(value, string_types):
         try:
             itemiter = iter(value)
         except TypeError:
@@ -110,7 +116,7 @@ def do_replace(eval_ctx, s, old, new, count=None):
     if count is None:
         count = -1
     if not eval_ctx.autoescape:
-        return unicode(s).replace(unicode(old), unicode(new), count)
+        return text_type(s).replace(text_type(old), text_type(new), count)
     if hasattr(old, '__html__') or hasattr(new, '__html__') and \
        not hasattr(s, '__html__'):
         s = escape(s)
@@ -155,7 +161,7 @@ def do_xmlattr(_eval_ctx, d, autospace=True):
     """
     rv = u' '.join(
         u'%s="%s"' % (escape(key), escape(value))
-        for key, value in d.iteritems()
+        for key, value in iteritems(d)
         if value is not None and not isinstance(value, Undefined)
     )
     if autospace and rv:
@@ -177,7 +183,7 @@ def do_title(s):
     uppercase letters, all remaining characters are lowercase.
     """
     rv = []
-    for item in re.compile(r'([-\s]+)(?u)').split(s):
+    for item in re.compile(r'([-\s]+)(?u)').split(soft_unicode(s)):
         if not item:
             continue
         rv.append(item[0].upper() + item[1:])
@@ -194,7 +200,7 @@ def do_dictsort(value, case_sensitive=False, by='key'):
         {% for item in mydict|dictsort %}
             sort the dict by key, case insensitive
 
-        {% for item in mydict|dicsort(true) %}
+        {% for item in mydict|dictsort(true) %}
             sort the dict by key, case sensitive
 
         {% for item in mydict|dictsort(false, 'value') %}
@@ -210,7 +216,7 @@ def do_dictsort(value, case_sensitive=False, by='key'):
                                   '"key" or "value"')
     def sort_func(item):
         value = item[pos]
-        if isinstance(value, basestring) and not case_sensitive:
+        if isinstance(value, string_types) and not case_sensitive:
             value = value.lower()
         return value
 
@@ -247,7 +253,7 @@ def do_sort(environment, value, reverse=False, case_sensitive=False,
     """
     if not case_sensitive:
         def sort_func(item):
-            if isinstance(item, basestring):
+            if isinstance(item, string_types):
                 item = item.lower()
             return item
     else:
@@ -276,7 +282,7 @@ def do_default(value, default_value=u'', boolean=False):
 
         {{ ''|default('the string was empty', true) }}
     """
-    if (boolean and not value) or isinstance(value, Undefined):
+    if isinstance(value, Undefined) or (boolean and not value):
         return default_value
     return value
 
@@ -309,7 +315,7 @@ def do_join(eval_ctx, value, d=u'', attribute=None):
 
     # no automatic escaping?  joining is a lot eaiser then
     if not eval_ctx.autoescape:
-        return unicode(d).join(imap(unicode, value))
+        return text_type(d).join(imap(text_type, value))
 
     # if the delimiter doesn't have an html representation we check
     # if any of the items has.  If yes we do a coercion to Markup
@@ -320,11 +326,11 @@ def do_join(eval_ctx, value, d=u'', attribute=None):
             if hasattr(item, '__html__'):
                 do_escape = True
             else:
-                value[idx] = unicode(item)
+                value[idx] = text_type(item)
         if do_escape:
             d = escape(d)
         else:
-            d = unicode(d)
+            d = text_type(d)
         return d.join(value)
 
     # no html involved, to normal joining
@@ -333,14 +339,14 @@ def do_join(eval_ctx, value, d=u'', attribute=None):
 
 def do_center(value, width=80):
     """Centers the value in a field of a given width."""
-    return unicode(value).center(width)
+    return text_type(value).center(width)
 
 
 @environmentfilter
 def do_first(environment, seq):
     """Return the first item of a sequence."""
     try:
-        return iter(seq).next()
+        return next(iter(seq))
     except StopIteration:
         return environment.undefined('No first item, sequence was empty.')
 
@@ -349,7 +355,7 @@ def do_first(environment, seq):
 def do_last(environment, seq):
     """Return the last item of a sequence."""
     try:
-        return iter(reversed(seq)).next()
+        return next(iter(reversed(seq)))
     except StopIteration:
         return environment.undefined('No last item, sequence was empty.')
 
@@ -443,16 +449,17 @@ def do_truncate(s, length=255, killwords=False, end='...'):
     """Return a truncated copy of the string. The length is specified
     with the first parameter which defaults to ``255``. If the second
     parameter is ``true`` the filter will cut the text at length. Otherwise
-    it will try to save the last word. If the text was in fact
+    it will discard the last word. If the text was in fact
     truncated it will append an ellipsis sign (``"..."``). If you want a
     different ellipsis sign than ``"..."`` you can specify it using the
     third parameter.
 
-    .. sourcecode jinja::
+    .. sourcecode:: jinja
 
-        {{ mytext|truncate(300, false, '&raquo;') }}
-            truncate mytext to 300 chars, don't split up words, use a
-            right pointing double arrow as ellipsis sign.
+        {{ "foo bar"|truncate(5) }}
+            -> "foo ..."
+        {{ "foo bar"|truncate(5, True) }}
+            -> "foo b..."
     """
     if len(s) <= length:
         return s
@@ -470,15 +477,23 @@ def do_truncate(s, length=255, killwords=False, end='...'):
     return u' '.join(result)
 
 @environmentfilter
-def do_wordwrap(environment, s, width=79, break_long_words=True):
+def do_wordwrap(environment, s, width=79, break_long_words=True,
+                wrapstring=None):
     """
     Return a copy of the string passed to the filter wrapped after
     ``79`` characters.  You can override this default using the first
     parameter.  If you set the second parameter to `false` Jinja will not
-    split words apart if they are longer than `width`.
+    split words apart if they are longer than `width`. By default, the newlines
+    will be the default newlines for the environment, but this can be changed
+    using the wrapstring keyword argument.
+
+    .. versionadded:: 2.7
+       Added support for the `wrapstring` parameter.
     """
+    if not wrapstring:
+        wrapstring = environment.newline_sequence
     import textwrap
-    return environment.newline_sequence.join(textwrap.wrap(s, width=width, expand_tabs=False,
+    return wrapstring.join(textwrap.wrap(s, width=width, expand_tabs=False,
                                    replace_whitespace=False,
                                    break_long_words=break_long_words))
 
@@ -539,7 +554,7 @@ def do_striptags(value):
     """
     if hasattr(value, '__html__'):
         value = value.__html__()
-    return Markup(unicode(value)).striptags()
+    return Markup(text_type(value)).striptags()
 
 
 def do_slice(value, slices, fill_with=None):
@@ -567,7 +582,7 @@ def do_slice(value, slices, fill_with=None):
     items_per_slice = length // slices
     slices_with_extra = length % slices
     offset = 0
-    for slice_number in xrange(slices):
+    for slice_number in range(slices):
         start = offset + slice_number * items_per_slice
         if slice_number < slices_with_extra:
             offset += 1
@@ -692,7 +707,8 @@ class _GroupTuple(tuple):
     grouper = property(itemgetter(0))
     list = property(itemgetter(1))
 
-    def __new__(cls, (key, value)):
+    def __new__(cls, xxx_todo_changeme):
+        (key, value) = xxx_todo_changeme
         return tuple.__new__(cls, (key, list(value)))
 
 
@@ -733,14 +749,14 @@ def do_mark_safe(value):
 
 def do_mark_unsafe(value):
     """Mark a value as unsafe.  This is the reverse operation for :func:`safe`."""
-    return unicode(value)
+    return text_type(value)
 
 
 def do_reverse(value):
     """Reverse the object or return an iterator the iterates over it the other
     way round.
     """
-    if isinstance(value, basestring):
+    if isinstance(value, string_types):
         return value[::-1]
     try:
         return reversed(value)
@@ -778,6 +794,145 @@ def do_attr(environment, obj, name):
     return environment.undefined(obj=obj, name=name)
 
 
+@contextfilter
+def do_map(*args, **kwargs):
+    """Applies a filter on a sequence of objects or looks up an attribute.
+    This is useful when dealing with lists of objects but you are really
+    only interested in a certain value of it.
+
+    The basic usage is mapping on an attribute.  Imagine you have a list
+    of users but you are only interested in a list of usernames:
+
+    .. sourcecode:: jinja
+
+        Users on this page: {{ users|map(attribute='username')|join(', ') }}
+
+    Alternatively you can let it invoke a filter by passing the name of the
+    filter and the arguments afterwards.  A good example would be applying a
+    text conversion filter on a sequence:
+
+    .. sourcecode:: jinja
+
+        Users on this page: {{ titles|map('lower')|join(', ') }}
+
+    .. versionadded:: 2.7
+    """
+    context = args[0]
+    seq = args[1]
+
+    if len(args) == 2 and 'attribute' in kwargs:
+        attribute = kwargs.pop('attribute')
+        if kwargs:
+            raise FilterArgumentError('Unexpected keyword argument %r' %
+                next(iter(kwargs)))
+        func = make_attrgetter(context.environment, attribute)
+    else:
+        try:
+            name = args[2]
+            args = args[3:]
+        except LookupError:
+            raise FilterArgumentError('map requires a filter argument')
+        func = lambda item: context.environment.call_filter(
+            name, item, args, kwargs, context=context)
+
+    if seq:
+        for item in seq:
+            yield func(item)
+
+
+@contextfilter
+def do_select(*args, **kwargs):
+    """Filters a sequence of objects by appying a test to the object and only
+    selecting the ones with the test succeeding.
+
+    Example usage:
+
+    .. sourcecode:: jinja
+
+        {{ numbers|select("odd") }}
+        {{ numbers|select("odd") }}
+
+    .. versionadded:: 2.7
+    """
+    return _select_or_reject(args, kwargs, lambda x: x, False)
+
+
+@contextfilter
+def do_reject(*args, **kwargs):
+    """Filters a sequence of objects by appying a test to the object and
+    rejecting the ones with the test succeeding.
+
+    Example usage:
+
+    .. sourcecode:: jinja
+
+        {{ numbers|reject("odd") }}
+
+    .. versionadded:: 2.7
+    """
+    return _select_or_reject(args, kwargs, lambda x: not x, False)
+
+
+@contextfilter
+def do_selectattr(*args, **kwargs):
+    """Filters a sequence of objects by appying a test to an attribute of an
+    object and only selecting the ones with the test succeeding.
+
+    Example usage:
+
+    .. sourcecode:: jinja
+
+        {{ users|selectattr("is_active") }}
+        {{ users|selectattr("email", "none") }}
+
+    .. versionadded:: 2.7
+    """
+    return _select_or_reject(args, kwargs, lambda x: x, True)
+
+
+@contextfilter
+def do_rejectattr(*args, **kwargs):
+    """Filters a sequence of objects by appying a test to an attribute of an
+    object or the attribute and rejecting the ones with the test succeeding.
+
+    .. sourcecode:: jinja
+
+        {{ users|rejectattr("is_active") }}
+        {{ users|rejectattr("email", "none") }}
+
+    .. versionadded:: 2.7
+    """
+    return _select_or_reject(args, kwargs, lambda x: not x, True)
+
+
+def _select_or_reject(args, kwargs, modfunc, lookup_attr):
+    context = args[0]
+    seq = args[1]
+    if lookup_attr:
+        try:
+            attr = args[2]
+        except LookupError:
+            raise FilterArgumentError('Missing parameter for attribute name')
+        transfunc = make_attrgetter(context.environment, attr)
+        off = 1
+    else:
+        off = 0
+        transfunc = lambda x: x
+
+    try:
+        name = args[2 + off]
+        args = args[3 + off:]
+        func = lambda item: context.environment.call_test(
+            name, item, args, kwargs)
+    except LookupError:
+        func = bool
+
+    if seq:
+        for item in seq:
+            if modfunc(func(transfunc(item))):
+                yield item
+
+
 FILTERS = {
     'attr':                 do_attr,
     'replace':              do_replace,
@@ -802,7 +957,10 @@ FILTERS = {
     'capitalize':           do_capitalize,
     'first':                do_first,
     'last':                 do_last,
+    'map':                  do_map,
     'random':               do_random,
+    'reject':               do_reject,
+    'rejectattr':           do_rejectattr,
     'filesizeformat':       do_filesizeformat,
     'pprint':               do_pprint,
     'truncate':             do_truncate,
@@ -816,6 +974,8 @@ FILTERS = {
     'format':               do_format,
     'trim':                 do_trim,
     'striptags':            do_striptags,
+    'select':               do_select,
+    'selectattr':           do_selectattr,
     'slice':                do_slice,
     'batch':                do_batch,
     'sum':                  do_sum,
diff --git a/modules/matlab/generator/jinja2/lexer.py b/modules/matlab/generator/jinja2/lexer.py
index 69865d08ae..36042e0171 100644
--- a/modules/matlab/generator/jinja2/lexer.py
+++ b/modules/matlab/generator/jinja2/lexer.py
@@ -15,10 +15,13 @@
     :license: BSD, see LICENSE for more details.
 """
 import re
+
 from operator import itemgetter
 from collections import deque
 from jinja2.exceptions import TemplateSyntaxError
-from jinja2.utils import LRUCache, next
+from jinja2.utils import LRUCache
+from jinja2._compat import iteritems, implements_iterator, text_type, \
+     intern
 
 
 # cache for the lexers. Exists in order to be able to have multiple
@@ -126,7 +129,7 @@ operators = {
     ';':            TOKEN_SEMICOLON
 }
 
-reverse_operators = dict([(v, k) for k, v in operators.iteritems()])
+reverse_operators = dict([(v, k) for k, v in iteritems(operators)])
 assert len(operators) == len(reverse_operators), 'operators dropped'
 operator_re = re.compile('(%s)' % '|'.join(re.escape(x) for x in
                          sorted(operators, key=lambda x: -len(x))))
@@ -197,7 +200,7 @@ def compile_rules(environment):
 
     if environment.line_statement_prefix is not None:
         rules.append((len(environment.line_statement_prefix), 'linestatement',
-                      r'^\s*' + e(environment.line_statement_prefix)))
+                      r'^[ \t\v]*' + e(environment.line_statement_prefix)))
     if environment.line_comment_prefix is not None:
         rules.append((len(environment.line_comment_prefix), 'linecomment',
                       r'(?:^|(?<=\S))[^\S\r\n]*' +
@@ -262,6 +265,7 @@ class Token(tuple):
         )
 
 
+@implements_iterator
 class TokenStreamIterator(object):
     """The iterator for tokenstreams.  Iterate over the stream
     until the eof token is reached.
@@ -273,7 +277,7 @@ class TokenStreamIterator(object):
     def __iter__(self):
         return self
 
-    def next(self):
+    def __next__(self):
         token = self.stream.current
         if token.type is TOKEN_EOF:
             self.stream.close()
@@ -282,6 +286,7 @@ class TokenStreamIterator(object):
         return token
 
 
+@implements_iterator
 class TokenStream(object):
     """A token stream is an iterable that yields :class:`Token`\s.  The
     parser however does not iterate over it but calls :meth:`next` to go
@@ -289,7 +294,7 @@ class TokenStream(object):
     """
 
     def __init__(self, generator, name, filename):
-        self._next = iter(generator).next
+        self._iter = iter(generator)
         self._pushed = deque()
         self.name = name
         self.filename = filename
@@ -300,8 +305,9 @@ class TokenStream(object):
     def __iter__(self):
         return TokenStreamIterator(self)
 
-    def __nonzero__(self):
+    def __bool__(self):
         return bool(self._pushed) or self.current.type is not TOKEN_EOF
+    __nonzero__ = __bool__  # py2
 
     eos = property(lambda x: not x, doc="Are we at the end of the stream?")
 
@@ -319,7 +325,7 @@ class TokenStream(object):
 
     def skip(self, n=1):
         """Got n tokens ahead."""
-        for x in xrange(n):
+        for x in range(n):
             next(self)
 
     def next_if(self, expr):
@@ -333,14 +339,14 @@ class TokenStream(object):
         """Like :meth:`next_if` but only returns `True` or `False`."""
         return self.next_if(expr) is not None
 
-    def next(self):
+    def __next__(self):
         """Go one token ahead and return the old one"""
         rv = self.current
         if self._pushed:
             self.current = self._pushed.popleft()
         elif self.current.type is not TOKEN_EOF:
             try:
-                self.current = self._next()
+                self.current = next(self._iter)
             except StopIteration:
                 self.close()
         return rv
@@ -348,7 +354,7 @@ class TokenStream(object):
     def close(self):
         """Close the stream."""
         self.current = Token(self.current.lineno, TOKEN_EOF, '')
-        self._next = None
+        self._iter = None
         self.closed = True
 
     def expect(self, expr):
@@ -383,7 +389,9 @@ def get_lexer(environment):
            environment.line_statement_prefix,
            environment.line_comment_prefix,
            environment.trim_blocks,
-           environment.newline_sequence)
+           environment.lstrip_blocks,
+           environment.newline_sequence,
+           environment.keep_trailing_newline)
     lexer = _lexer_cache.get(key)
     if lexer is None:
         lexer = Lexer(environment)
@@ -425,7 +433,44 @@ class Lexer(object):
         # block suffix if trimming is enabled
         block_suffix_re = environment.trim_blocks and '\\n?' or ''
 
+        # strip leading spaces if lstrip_blocks is enabled
+        prefix_re = {}
+        if environment.lstrip_blocks:
+            # use '{%+' to manually disable lstrip_blocks behavior
+            no_lstrip_re = e('+')
+            # detect overlap between block and variable or comment strings
+            block_diff = c(r'^%s(.*)' % e(environment.block_start_string))
+            # make sure we don't mistake a block for a variable or a comment
+            m = block_diff.match(environment.comment_start_string)
+            no_lstrip_re += m and r'|%s' % e(m.group(1)) or ''
+            m = block_diff.match(environment.variable_start_string)
+            no_lstrip_re += m and r'|%s' % e(m.group(1)) or ''
+
+            # detect overlap between comment and variable strings
+            comment_diff = c(r'^%s(.*)' % e(environment.comment_start_string))
+            m = comment_diff.match(environment.variable_start_string)
+            no_variable_re = m and r'(?!%s)' % e(m.group(1)) or ''
+
+            lstrip_re = r'^[ \t]*'
+            block_prefix_re = r'%s%s(?!%s)|%s\+?' % (
+                    lstrip_re,
+                    e(environment.block_start_string),
+                    no_lstrip_re,
+                    e(environment.block_start_string),
+                    )
+            comment_prefix_re = r'%s%s%s|%s\+?' % (
+                    lstrip_re,
+                    e(environment.comment_start_string),
+                    no_variable_re,
+                    e(environment.comment_start_string),
+                    )
+            prefix_re['block'] = block_prefix_re
+            prefix_re['comment'] = comment_prefix_re
+        else:
+            block_prefix_re = '%s' % e(environment.block_start_string)
+
         self.newline_sequence = environment.newline_sequence
+        self.keep_trailing_newline = environment.keep_trailing_newline
 
         # global lexing rules
         self.rules = {
@@ -434,11 +479,11 @@ class Lexer(object):
                 (c('(.*?)(?:%s)' % '|'.join(
                     [r'(?P<raw_begin>(?:\s*%s\-|%s)\s*raw\s*(?:\-%s\s*|%s))' % (
                         e(environment.block_start_string),
-                        e(environment.block_start_string),
+                        block_prefix_re,
                         e(environment.block_end_string),
                         e(environment.block_end_string)
                     )] + [
-                        r'(?P<%s_begin>\s*%s\-|%s)' % (n, r, r)
+                        r'(?P<%s_begin>\s*%s\-|%s)' % (n, r, prefix_re.get(n,r))
                         for n, r in root_tag_rules
                     ])), (TOKEN_DATA, '#bygroup'), '#bygroup'),
                 # data
@@ -472,7 +517,7 @@ class Lexer(object):
             TOKEN_RAW_BEGIN: [
                 (c('(.*?)((?:\s*%s\-|%s)\s*endraw\s*(?:\-%s\s*|%s%s))' % (
                     e(environment.block_start_string),
-                    e(environment.block_start_string),
+                    block_prefix_re,
                     e(environment.block_end_string),
                     e(environment.block_end_string),
                     block_suffix_re
@@ -526,7 +571,7 @@ class Lexer(object):
                     value = self._normalize_newlines(value[1:-1]) \
                         .encode('ascii', 'backslashreplace') \
                         .decode('unicode-escape')
-                except Exception, e:
+                except Exception as e:
                     msg = str(e).split(':')[-1].strip()
                     raise TemplateSyntaxError(msg, lineno, name, filename)
                 # if we can express it as bytestring (ascii only)
@@ -549,7 +594,14 @@ class Lexer(object):
         """This method tokenizes the text and returns the tokens in a
         generator.  Use this method if you just want to tokenize a template.
         """
-        source = '\n'.join(unicode(source).splitlines())
+        source = text_type(source)
+        lines = source.splitlines()
+        if self.keep_trailing_newline and source:
+            for newline in ('\r\n', '\r', '\n'):
+                if source.endswith(newline):
+                    lines.append('')
+                    break
+        source = '\n'.join(lines)
         pos = 0
         lineno = 1
         stack = ['root']
@@ -590,7 +642,7 @@ class Lexer(object):
                         # yield for the current token the first named
                         # group that matched
                         elif token == '#bygroup':
-                            for key, value in m.groupdict().iteritems():
+                            for key, value in iteritems(m.groupdict()):
                                 if value is not None:
                                     yield lineno, key, value
                                     lineno += value.count('\n')
@@ -647,7 +699,7 @@ class Lexer(object):
                         stack.pop()
                     # resolve the new state by group checking
                     elif new_state == '#bygroup':
-                        for key, value in m.groupdict().iteritems():
+                        for key, value in iteritems(m.groupdict()):
                             if value is not None:
                                 stack.append(key)
                                 break
diff --git a/modules/matlab/generator/jinja2/loaders.py b/modules/matlab/generator/jinja2/loaders.py
index c90bbe7204..a9a2625274 100644
--- a/modules/matlab/generator/jinja2/loaders.py
+++ b/modules/matlab/generator/jinja2/loaders.py
@@ -13,12 +13,10 @@ import sys
 import weakref
 from types import ModuleType
 from os import path
-try:
-    from hashlib import sha1
-except ImportError:
-    from sha import new as sha1
+from hashlib import sha1
 from jinja2.exceptions import TemplateNotFound
-from jinja2.utils import LRUCache, open_if_exists, internalcode
+from jinja2.utils import open_if_exists, internalcode
+from jinja2._compat import string_types, iteritems
 
 
 def split_template_path(template):
@@ -153,7 +151,7 @@ class FileSystemLoader(BaseLoader):
     """
 
     def __init__(self, searchpath, encoding='utf-8'):
-        if isinstance(searchpath, basestring):
+        if isinstance(searchpath, string_types):
             searchpath = [searchpath]
         self.searchpath = list(searchpath)
         self.encoding = encoding
@@ -274,7 +272,7 @@ class DictLoader(BaseLoader):
     def get_source(self, environment, template):
         if template in self.mapping:
             source = self.mapping[template]
-            return source, None, lambda: source != self.mapping.get(template)
+            return source, None, lambda: source == self.mapping.get(template)
         raise TemplateNotFound(template)
 
     def list_templates(self):
@@ -306,7 +304,7 @@ class FunctionLoader(BaseLoader):
         rv = self.load_func(template)
         if rv is None:
             raise TemplateNotFound(template)
-        elif isinstance(rv, basestring):
+        elif isinstance(rv, string_types):
             return rv, None, None
         return rv
 
@@ -359,7 +357,7 @@ class PrefixLoader(BaseLoader):
 
     def list_templates(self):
         result = []
-        for prefix, loader in self.mapping.iteritems():
+        for prefix, loader in iteritems(self.mapping):
             for template in loader.list_templates():
                 result.append(prefix + self.delimiter + template)
         return result
@@ -431,7 +429,7 @@ class ModuleLoader(BaseLoader):
         # create a fake module that looks for the templates in the
         # path given.
         mod = _TemplateModule(package_name)
-        if isinstance(path, basestring):
+        if isinstance(path, string_types):
             path = [path]
         else:
             path = list(path)
diff --git a/modules/matlab/generator/jinja2/_markupsafe/__init__.py b/modules/matlab/generator/jinja2/markupsafe/__init__.py
similarity index 66%
rename from modules/matlab/generator/jinja2/_markupsafe/__init__.py
rename to modules/matlab/generator/jinja2/markupsafe/__init__.py
index ec7bd572d0..f13d7070df 100644
--- a/modules/matlab/generator/jinja2/_markupsafe/__init__.py
+++ b/modules/matlab/generator/jinja2/markupsafe/__init__.py
@@ -9,7 +9,8 @@
     :license: BSD, see LICENSE for more details.
 """
 import re
-from itertools import imap
+from _compat import text_type, string_types, int_types, \
+     unichr, PY2
 
 
 __all__ = ['Markup', 'soft_unicode', 'escape', 'escape_silent']
@@ -19,7 +20,7 @@ _striptags_re = re.compile(r'(<!--.*?-->|<[^>]*>)')
 _entity_re = re.compile(r'&([^;]+);')
 
 
-class Markup(unicode):
+class Markup(text_type):
     r"""Marks a string as being safe for inclusion in HTML/XML output without
     needing to be escaped.  This implements the `__html__` interface a couple
     of frameworks and web applications use.  :class:`Markup` is a direct
@@ -68,65 +69,65 @@ class Markup(unicode):
         if hasattr(base, '__html__'):
             base = base.__html__()
         if encoding is None:
-            return unicode.__new__(cls, base)
-        return unicode.__new__(cls, base, encoding, errors)
+            return text_type.__new__(cls, base)
+        return text_type.__new__(cls, base, encoding, errors)
 
     def __html__(self):
         return self
 
     def __add__(self, other):
-        if hasattr(other, '__html__') or isinstance(other, basestring):
-            return self.__class__(unicode(self) + unicode(escape(other)))
+        if isinstance(other, string_types) or hasattr(other, '__html__'):
+            return self.__class__(super(Markup, self).__add__(self.escape(other)))
         return NotImplemented
 
     def __radd__(self, other):
-        if hasattr(other, '__html__') or isinstance(other, basestring):
-            return self.__class__(unicode(escape(other)) + unicode(self))
+        if hasattr(other, '__html__') or isinstance(other, string_types):
+            return self.escape(other).__add__(self)
         return NotImplemented
 
     def __mul__(self, num):
-        if isinstance(num, (int, long)):
-            return self.__class__(unicode.__mul__(self, num))
+        if isinstance(num, int_types):
+            return self.__class__(text_type.__mul__(self, num))
         return NotImplemented
     __rmul__ = __mul__
 
     def __mod__(self, arg):
         if isinstance(arg, tuple):
-            arg = tuple(imap(_MarkupEscapeHelper, arg))
+            arg = tuple(_MarkupEscapeHelper(x, self.escape) for x in arg)
         else:
-            arg = _MarkupEscapeHelper(arg)
-        return self.__class__(unicode.__mod__(self, arg))
+            arg = _MarkupEscapeHelper(arg, self.escape)
+        return self.__class__(text_type.__mod__(self, arg))
 
     def __repr__(self):
         return '%s(%s)' % (
             self.__class__.__name__,
-            unicode.__repr__(self)
+            text_type.__repr__(self)
         )
 
     def join(self, seq):
-        return self.__class__(unicode.join(self, imap(escape, seq)))
-    join.__doc__ = unicode.join.__doc__
+        return self.__class__(text_type.join(self, map(self.escape, seq)))
+    join.__doc__ = text_type.join.__doc__
 
     def split(self, *args, **kwargs):
-        return map(self.__class__, unicode.split(self, *args, **kwargs))
-    split.__doc__ = unicode.split.__doc__
+        return list(map(self.__class__, text_type.split(self, *args, **kwargs)))
+    split.__doc__ = text_type.split.__doc__
 
     def rsplit(self, *args, **kwargs):
-        return map(self.__class__, unicode.rsplit(self, *args, **kwargs))
-    rsplit.__doc__ = unicode.rsplit.__doc__
+        return list(map(self.__class__, text_type.rsplit(self, *args, **kwargs)))
+    rsplit.__doc__ = text_type.rsplit.__doc__
 
     def splitlines(self, *args, **kwargs):
-        return map(self.__class__, unicode.splitlines(self, *args, **kwargs))
-    splitlines.__doc__ = unicode.splitlines.__doc__
+        return list(map(self.__class__, text_type.splitlines(self, *args, **kwargs)))
+    splitlines.__doc__ = text_type.splitlines.__doc__
 
     def unescape(self):
-        r"""Unescape markup again into an unicode string.  This also resolves
+        r"""Unescape markup again into an text_type string.  This also resolves
         known HTML4 and XHTML entities:
 
         >>> Markup("Main &raquo; <em>About</em>").unescape()
         u'Main \xbb <em>About</em>'
         """
-        from jinja2._markupsafe._constants import HTML_ENTITIES
+        from _constants import HTML_ENTITIES
         def handle_match(m):
             name = m.group(1)
             if name in HTML_ENTITIES:
@@ -139,10 +140,10 @@ class Markup(unicode):
             except ValueError:
                 pass
             return u''
-        return _entity_re.sub(handle_match, unicode(self))
+        return _entity_re.sub(handle_match, text_type(self))
 
     def striptags(self):
-        r"""Unescape markup into an unicode string and strip all tags.  This
+        r"""Unescape markup into an text_type string and strip all tags.  This
         also resolves known HTML4 and XHTML entities.  Whitespace is
         normalized to one:
 
@@ -164,10 +165,10 @@ class Markup(unicode):
         return rv
 
     def make_wrapper(name):
-        orig = getattr(unicode, name)
+        orig = getattr(text_type, name)
         def func(self, *args, **kwargs):
-            args = _escape_argspec(list(args), enumerate(args))
-            _escape_argspec(kwargs, kwargs.iteritems())
+            args = _escape_argspec(list(args), enumerate(args), self.escape)
+            #_escape_argspec(kwargs, kwargs.iteritems(), None)
             return self.__class__(orig(self, *args, **kwargs))
         func.__name__ = orig.__name__
         func.__doc__ = orig.__doc__
@@ -180,25 +181,29 @@ class Markup(unicode):
         locals()[method] = make_wrapper(method)
 
     # new in python 2.5
-    if hasattr(unicode, 'partition'):
-        partition = make_wrapper('partition'),
-        rpartition = make_wrapper('rpartition')
+    if hasattr(text_type, 'partition'):
+        def partition(self, sep):
+            return tuple(map(self.__class__,
+                             text_type.partition(self, self.escape(sep))))
+        def rpartition(self, sep):
+            return tuple(map(self.__class__,
+                             text_type.rpartition(self, self.escape(sep))))
 
     # new in python 2.6
-    if hasattr(unicode, 'format'):
+    if hasattr(text_type, 'format'):
         format = make_wrapper('format')
 
     # not in python 3
-    if hasattr(unicode, '__getslice__'):
+    if hasattr(text_type, '__getslice__'):
         __getslice__ = make_wrapper('__getslice__')
 
     del method, make_wrapper
 
 
-def _escape_argspec(obj, iterable):
+def _escape_argspec(obj, iterable, escape):
     """Helper for various string-wrapped functions."""
     for key, value in iterable:
-        if hasattr(value, '__html__') or isinstance(value, basestring):
+        if hasattr(value, '__html__') or isinstance(value, string_types):
             obj[key] = escape(value)
     return obj
 
@@ -206,13 +211,13 @@ def _escape_argspec(obj, iterable):
 class _MarkupEscapeHelper(object):
     """Helper for Markup.__mod__"""
 
-    def __init__(self, obj):
+    def __init__(self, obj, escape):
         self.obj = obj
+        self.escape = escape
 
-    __getitem__ = lambda s, x: _MarkupEscapeHelper(s.obj[x])
-    __str__ = lambda s: str(escape(s.obj))
-    __unicode__ = lambda s: unicode(escape(s.obj))
-    __repr__ = lambda s: str(escape(repr(s.obj)))
+    __getitem__ = lambda s, x: _MarkupEscapeHelper(s.obj[x], s.escape)
+    __unicode__ = __str__ = lambda s: text_type(s.escape(s.obj))
+    __repr__ = lambda s: str(s.escape(repr(s.obj)))
     __int__ = lambda s: int(s.obj)
     __float__ = lambda s: float(s.obj)
 
@@ -220,6 +225,10 @@ class _MarkupEscapeHelper(object):
 # we have to import it down here as the speedups and native
 # modules imports the markup type which is define above.
 try:
-    from jinja2._markupsafe._speedups import escape, escape_silent, soft_unicode
+    from _speedups import escape, escape_silent, soft_unicode
 except ImportError:
-    from jinja2._markupsafe._native import escape, escape_silent, soft_unicode
+    from _native import escape, escape_silent, soft_unicode
+
+if not PY2:
+    soft_str = soft_unicode
+    __all__.append('soft_str')
diff --git a/modules/matlab/generator/jinja2/markupsafe/_compat.py b/modules/matlab/generator/jinja2/markupsafe/_compat.py
new file mode 100644
index 0000000000..29e4a3dac1
--- /dev/null
+++ b/modules/matlab/generator/jinja2/markupsafe/_compat.py
@@ -0,0 +1,24 @@
+# -*- coding: utf-8 -*-
+"""
+    markupsafe._compat
+    ~~~~~~~~~~~~~~~~~~
+
+    Compatibility module for different Python versions.
+
+    :copyright: (c) 2013 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+import sys
+
+PY2 = sys.version_info[0] == 2
+
+if not PY2:
+    text_type = str
+    string_types = (str,)
+    unichr = chr
+    int_types = (int,)
+else:
+    text_type = unicode
+    string_types = (str, unicode)
+    unichr = unichr
+    int_types = (int, long)
diff --git a/modules/matlab/generator/jinja2/markupsafe/_constants.py b/modules/matlab/generator/jinja2/markupsafe/_constants.py
new file mode 100644
index 0000000000..919bf03c50
--- /dev/null
+++ b/modules/matlab/generator/jinja2/markupsafe/_constants.py
@@ -0,0 +1,267 @@
+# -*- coding: utf-8 -*-
+"""
+    markupsafe._constants
+    ~~~~~~~~~~~~~~~~~~~~~
+
+    Highlevel implementation of the Markup string.
+
+    :copyright: (c) 2010 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+
+
+HTML_ENTITIES = {
+    'AElig': 198,
+    'Aacute': 193,
+    'Acirc': 194,
+    'Agrave': 192,
+    'Alpha': 913,
+    'Aring': 197,
+    'Atilde': 195,
+    'Auml': 196,
+    'Beta': 914,
+    'Ccedil': 199,
+    'Chi': 935,
+    'Dagger': 8225,
+    'Delta': 916,
+    'ETH': 208,
+    'Eacute': 201,
+    'Ecirc': 202,
+    'Egrave': 200,
+    'Epsilon': 917,
+    'Eta': 919,
+    'Euml': 203,
+    'Gamma': 915,
+    'Iacute': 205,
+    'Icirc': 206,
+    'Igrave': 204,
+    'Iota': 921,
+    'Iuml': 207,
+    'Kappa': 922,
+    'Lambda': 923,
+    'Mu': 924,
+    'Ntilde': 209,
+    'Nu': 925,
+    'OElig': 338,
+    'Oacute': 211,
+    'Ocirc': 212,
+    'Ograve': 210,
+    'Omega': 937,
+    'Omicron': 927,
+    'Oslash': 216,
+    'Otilde': 213,
+    'Ouml': 214,
+    'Phi': 934,
+    'Pi': 928,
+    'Prime': 8243,
+    'Psi': 936,
+    'Rho': 929,
+    'Scaron': 352,
+    'Sigma': 931,
+    'THORN': 222,
+    'Tau': 932,
+    'Theta': 920,
+    'Uacute': 218,
+    'Ucirc': 219,
+    'Ugrave': 217,
+    'Upsilon': 933,
+    'Uuml': 220,
+    'Xi': 926,
+    'Yacute': 221,
+    'Yuml': 376,
+    'Zeta': 918,
+    'aacute': 225,
+    'acirc': 226,
+    'acute': 180,
+    'aelig': 230,
+    'agrave': 224,
+    'alefsym': 8501,
+    'alpha': 945,
+    'amp': 38,
+    'and': 8743,
+    'ang': 8736,
+    'apos': 39,
+    'aring': 229,
+    'asymp': 8776,
+    'atilde': 227,
+    'auml': 228,
+    'bdquo': 8222,
+    'beta': 946,
+    'brvbar': 166,
+    'bull': 8226,
+    'cap': 8745,
+    'ccedil': 231,
+    'cedil': 184,
+    'cent': 162,
+    'chi': 967,
+    'circ': 710,
+    'clubs': 9827,
+    'cong': 8773,
+    'copy': 169,
+    'crarr': 8629,
+    'cup': 8746,
+    'curren': 164,
+    'dArr': 8659,
+    'dagger': 8224,
+    'darr': 8595,
+    'deg': 176,
+    'delta': 948,
+    'diams': 9830,
+    'divide': 247,
+    'eacute': 233,
+    'ecirc': 234,
+    'egrave': 232,
+    'empty': 8709,
+    'emsp': 8195,
+    'ensp': 8194,
+    'epsilon': 949,
+    'equiv': 8801,
+    'eta': 951,
+    'eth': 240,
+    'euml': 235,
+    'euro': 8364,
+    'exist': 8707,
+    'fnof': 402,
+    'forall': 8704,
+    'frac12': 189,
+    'frac14': 188,
+    'frac34': 190,
+    'frasl': 8260,
+    'gamma': 947,
+    'ge': 8805,
+    'gt': 62,
+    'hArr': 8660,
+    'harr': 8596,
+    'hearts': 9829,
+    'hellip': 8230,
+    'iacute': 237,
+    'icirc': 238,
+    'iexcl': 161,
+    'igrave': 236,
+    'image': 8465,
+    'infin': 8734,
+    'int': 8747,
+    'iota': 953,
+    'iquest': 191,
+    'isin': 8712,
+    'iuml': 239,
+    'kappa': 954,
+    'lArr': 8656,
+    'lambda': 955,
+    'lang': 9001,
+    'laquo': 171,
+    'larr': 8592,
+    'lceil': 8968,
+    'ldquo': 8220,
+    'le': 8804,
+    'lfloor': 8970,
+    'lowast': 8727,
+    'loz': 9674,
+    'lrm': 8206,
+    'lsaquo': 8249,
+    'lsquo': 8216,
+    'lt': 60,
+    'macr': 175,
+    'mdash': 8212,
+    'micro': 181,
+    'middot': 183,
+    'minus': 8722,
+    'mu': 956,
+    'nabla': 8711,
+    'nbsp': 160,
+    'ndash': 8211,
+    'ne': 8800,
+    'ni': 8715,
+    'not': 172,
+    'notin': 8713,
+    'nsub': 8836,
+    'ntilde': 241,
+    'nu': 957,
+    'oacute': 243,
+    'ocirc': 244,
+    'oelig': 339,
+    'ograve': 242,
+    'oline': 8254,
+    'omega': 969,
+    'omicron': 959,
+    'oplus': 8853,
+    'or': 8744,
+    'ordf': 170,
+    'ordm': 186,
+    'oslash': 248,
+    'otilde': 245,
+    'otimes': 8855,
+    'ouml': 246,
+    'para': 182,
+    'part': 8706,
+    'permil': 8240,
+    'perp': 8869,
+    'phi': 966,
+    'pi': 960,
+    'piv': 982,
+    'plusmn': 177,
+    'pound': 163,
+    'prime': 8242,
+    'prod': 8719,
+    'prop': 8733,
+    'psi': 968,
+    'quot': 34,
+    'rArr': 8658,
+    'radic': 8730,
+    'rang': 9002,
+    'raquo': 187,
+    'rarr': 8594,
+    'rceil': 8969,
+    'rdquo': 8221,
+    'real': 8476,
+    'reg': 174,
+    'rfloor': 8971,
+    'rho': 961,
+    'rlm': 8207,
+    'rsaquo': 8250,
+    'rsquo': 8217,
+    'sbquo': 8218,
+    'scaron': 353,
+    'sdot': 8901,
+    'sect': 167,
+    'shy': 173,
+    'sigma': 963,
+    'sigmaf': 962,
+    'sim': 8764,
+    'spades': 9824,
+    'sub': 8834,
+    'sube': 8838,
+    'sum': 8721,
+    'sup': 8835,
+    'sup1': 185,
+    'sup2': 178,
+    'sup3': 179,
+    'supe': 8839,
+    'szlig': 223,
+    'tau': 964,
+    'there4': 8756,
+    'theta': 952,
+    'thetasym': 977,
+    'thinsp': 8201,
+    'thorn': 254,
+    'tilde': 732,
+    'times': 215,
+    'trade': 8482,
+    'uArr': 8657,
+    'uacute': 250,
+    'uarr': 8593,
+    'ucirc': 251,
+    'ugrave': 249,
+    'uml': 168,
+    'upsih': 978,
+    'upsilon': 965,
+    'uuml': 252,
+    'weierp': 8472,
+    'xi': 958,
+    'yacute': 253,
+    'yen': 165,
+    'yuml': 255,
+    'zeta': 950,
+    'zwj': 8205,
+    'zwnj': 8204
+}
diff --git a/modules/matlab/generator/jinja2/_markupsafe/_native.py b/modules/matlab/generator/jinja2/markupsafe/_native.py
similarity index 89%
rename from modules/matlab/generator/jinja2/_markupsafe/_native.py
rename to modules/matlab/generator/jinja2/markupsafe/_native.py
index 7b95828ec8..4b4aee3893 100644
--- a/modules/matlab/generator/jinja2/_markupsafe/_native.py
+++ b/modules/matlab/generator/jinja2/markupsafe/_native.py
@@ -8,7 +8,7 @@
     :copyright: (c) 2010 by Armin Ronacher.
     :license: BSD, see LICENSE for more details.
 """
-from jinja2._markupsafe import Markup
+from _compat import text_type
 
 
 def escape(s):
@@ -18,7 +18,7 @@ def escape(s):
     """
     if hasattr(s, '__html__'):
         return s.__html__()
-    return Markup(unicode(s)
+    return Markup(text_type(s)
         .replace('&', '&amp;')
         .replace('>', '&gt;')
         .replace('<', '&lt;')
@@ -40,6 +40,6 @@ def soft_unicode(s):
     """Make a string unicode if it isn't already.  That way a markup
     string is not converted back to unicode.
     """
-    if not isinstance(s, unicode):
-        s = unicode(s)
+    if not isinstance(s, text_type):
+        s = text_type(s)
     return s
diff --git a/modules/matlab/generator/jinja2/nodes.py b/modules/matlab/generator/jinja2/nodes.py
index f9da1da5a2..aa75f27247 100644
--- a/modules/matlab/generator/jinja2/nodes.py
+++ b/modules/matlab/generator/jinja2/nodes.py
@@ -12,14 +12,16 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD, see LICENSE for more details.
 """
+import types
 import operator
-from itertools import chain, izip
+
 from collections import deque
-from jinja2.utils import Markup, MethodType, FunctionType
+from jinja2.utils import Markup
+from jinja2._compat import izip, with_metaclass, text_type
 
 
 #: the types we support for context functions
-_context_function_types = (FunctionType, MethodType)
+_context_function_types = (types.FunctionType, types.MethodType)
 
 
 _binop_to_func = {
@@ -102,9 +104,9 @@ def get_eval_context(node, ctx):
     return ctx
 
 
-class Node(object):
+class Node(with_metaclass(NodeType, object)):
     """Baseclass for all Jinja2 nodes.  There are a number of nodes available
-    of different types.  There are three major types:
+    of different types.  There are four major types:
 
     -   :class:`Stmt`: statements
     -   :class:`Expr`: expressions
@@ -118,7 +120,6 @@ class Node(object):
     The `environment` attribute is set at the end of the parsing process for
     all nodes automatically.
     """
-    __metaclass__ = NodeType
     fields = ()
     attributes = ('lineno', 'environment')
     abstract = True
@@ -142,7 +143,7 @@ class Node(object):
             setattr(self, attr, attributes.pop(attr, None))
         if attributes:
             raise TypeError('unknown attribute %r' %
-                            iter(attributes).next())
+                            next(iter(attributes)))
 
     def iter_fields(self, exclude=None, only=None):
         """This method iterates over all fields that are defined and yields
@@ -440,7 +441,7 @@ class Const(Literal):
         constant value in the generated code, otherwise it will raise
         an `Impossible` exception.
         """
-        from compiler import has_safe_repr
+        from .compiler import has_safe_repr
         if not has_safe_repr(value):
             raise Impossible()
         return cls(value, lineno=lineno, environment=environment)
@@ -687,7 +688,7 @@ class Concat(Expr):
 
     def as_const(self, eval_ctx=None):
         eval_ctx = get_eval_context(self, eval_ctx)
-        return ''.join(unicode(x.as_const(eval_ctx)) for x in self.nodes)
+        return ''.join(text_type(x.as_const(eval_ctx)) for x in self.nodes)
 
 
 class Compare(Expr):
diff --git a/modules/matlab/generator/jinja2/parser.py b/modules/matlab/generator/jinja2/parser.py
index 21253389d4..18ed844a78 100644
--- a/modules/matlab/generator/jinja2/parser.py
+++ b/modules/matlab/generator/jinja2/parser.py
@@ -10,8 +10,8 @@
 """
 from jinja2 import nodes
 from jinja2.exceptions import TemplateSyntaxError, TemplateAssertionError
-from jinja2.utils import next
 from jinja2.lexer import describe_token, describe_token_expr
+from jinja2._compat import imap
 
 
 #: statements that callinto 
@@ -53,7 +53,7 @@ class Parser(object):
     def _fail_ut_eof(self, name, end_token_stack, lineno):
         expected = []
         for exprs in end_token_stack:
-            expected.extend(map(describe_token_expr, exprs))
+            expected.extend(imap(describe_token_expr, exprs))
         if end_token_stack:
             currently_looking = ' or '.join(
                 "'%s'" % describe_token_expr(expr)
diff --git a/modules/matlab/generator/jinja2/runtime.py b/modules/matlab/generator/jinja2/runtime.py
index 5c39984170..64d42a3539 100644
--- a/modules/matlab/generator/jinja2/runtime.py
+++ b/modules/matlab/generator/jinja2/runtime.py
@@ -8,12 +8,14 @@
     :copyright: (c) 2010 by the Jinja Team.
     :license: BSD.
 """
-from itertools import chain, imap
+from itertools import chain
 from jinja2.nodes import EvalContext, _context_function_types
-from jinja2.utils import Markup, partial, soft_unicode, escape, missing, \
-     concat, internalcode, next, object_type_repr
+from jinja2.utils import Markup, soft_unicode, escape, missing, concat, \
+     internalcode, object_type_repr
 from jinja2.exceptions import UndefinedError, TemplateRuntimeError, \
      TemplateNotFound
+from jinja2._compat import imap, text_type, iteritems, \
+     implements_iterator, implements_to_string, string_types, PY2
 
 
 # these variables are exported to the template runtime
@@ -23,9 +25,8 @@ __all__ = ['LoopContext', 'TemplateReference', 'Macro', 'Markup',
            'TemplateNotFound']
 
 #: the name of the function that is used to convert something into
-#: a string.  2to3 will adopt that automatically and the generated
-#: code can take advantage of it.
-to_string = unicode
+#: a string.  We can just use the text type here.
+to_string = text_type
 
 #: the identity function.  Useful for certain things in the environment
 identity = lambda x: x
@@ -46,7 +47,7 @@ def markup_join(seq):
 
 def unicode_join(seq):
     """Simple args to unicode conversion and concatenation."""
-    return concat(imap(unicode, seq))
+    return concat(imap(text_type, seq))
 
 
 def new_context(environment, template_name, blocks, vars=None,
@@ -63,7 +64,7 @@ def new_context(environment, template_name, blocks, vars=None,
         # we don't want to modify the dict passed
         if shared:
             parent = dict(parent)
-        for key, value in locals.iteritems():
+        for key, value in iteritems(locals):
             if key[:2] == 'l_' and value is not missing:
                 parent[key[2:]] = value
     return Context(environment, parent, template_name, blocks)
@@ -119,7 +120,7 @@ class Context(object):
         # create the initial mapping of blocks.  Whenever template inheritance
         # takes place the runtime will update this mapping with the new blocks
         # from the template.
-        self.blocks = dict((k, [v]) for k, v in blocks.iteritems())
+        self.blocks = dict((k, [v]) for k, v in iteritems(blocks))
 
     def super(self, name, current):
         """Render a parent block."""
@@ -171,6 +172,16 @@ class Context(object):
         """
         if __debug__:
             __traceback_hide__ = True
+
+        # Allow callable classes to take a context
+        fn = __obj.__call__
+        for fn_type in ('contextfunction',
+                        'evalcontextfunction',
+                        'environmentfunction'):
+            if hasattr(fn, fn_type):
+                __obj = fn
+                break
+
         if isinstance(__obj, _context_function_types):
             if getattr(__obj, 'contextfunction', 0):
                 args = (__self,) + args
@@ -191,7 +202,7 @@ class Context(object):
                               self.parent, True, None, locals)
         context.vars.update(self.vars)
         context.eval_ctx = self.eval_ctx
-        context.blocks.update((k, list(v)) for k, v in self.blocks.iteritems())
+        context.blocks.update((k, list(v)) for k, v in iteritems(self.blocks))
         return context
 
     def _all(meth):
@@ -205,7 +216,7 @@ class Context(object):
     items = _all('items')
 
     # not available on python 3
-    if hasattr(dict, 'iterkeys'):
+    if PY2:
         iterkeys = _all('iterkeys')
         itervalues = _all('itervalues')
         iteritems = _all('iteritems')
@@ -269,11 +280,12 @@ class BlockReference(object):
 class LoopContext(object):
     """A loop context for dynamic iteration."""
 
-    def __init__(self, iterable, recurse=None):
+    def __init__(self, iterable, recurse=None, depth0=0):
         self._iterator = iter(iterable)
         self._recurse = recurse
         self._after = self._safe_next()
         self.index0 = -1
+        self.depth0 = depth0
 
         # try to get the length of the iterable early.  This must be done
         # here because there are some broken iterators around where there
@@ -295,6 +307,7 @@ class LoopContext(object):
     index = property(lambda x: x.index0 + 1)
     revindex = property(lambda x: x.length - x.index0)
     revindex0 = property(lambda x: x.length - x.index)
+    depth = property(lambda x: x.depth0 + 1)
 
     def __len__(self):
         return self.length
@@ -313,7 +326,7 @@ class LoopContext(object):
         if self._recurse is None:
             raise TypeError('Tried to call non recursive loop.  Maybe you '
                             "forgot the 'recursive' modifier.")
-        return self._recurse(iterable, self._recurse)
+        return self._recurse(iterable, self._recurse, self.depth0 + 1)
 
     # a nifty trick to enhance the error message if someone tried to call
     # the the loop without or with too many arguments.
@@ -340,6 +353,7 @@ class LoopContext(object):
         )
 
 
+@implements_iterator
 class LoopContextIterator(object):
     """The iterator for a loop context."""
     __slots__ = ('context',)
@@ -350,7 +364,7 @@ class LoopContextIterator(object):
     def __iter__(self):
         return self
 
-    def next(self):
+    def __next__(self):
         ctx = self.context
         ctx.index0 += 1
         if ctx._after is _last_iteration:
@@ -424,6 +438,7 @@ class Macro(object):
         )
 
 
+@implements_to_string
 class Undefined(object):
     """The default undefined type.  This undefined type can be printed and
     iterated over, but every other access will raise an :exc:`UndefinedError`:
@@ -455,7 +470,7 @@ class Undefined(object):
         if self._undefined_hint is None:
             if self._undefined_obj is missing:
                 hint = '%r is undefined' % self._undefined_name
-            elif not isinstance(self._undefined_name, basestring):
+            elif not isinstance(self._undefined_name, string_types):
                 hint = '%s has no element %r' % (
                     object_type_repr(self._undefined_obj),
                     self._undefined_name
@@ -483,13 +498,6 @@ class Undefined(object):
         _fail_with_undefined_error
 
     def __str__(self):
-        return unicode(self).encode('utf-8')
-
-    # unicode goes after __str__ because we configured 2to3 to rename
-    # __unicode__ to __str__.  because the 2to3 tree is not designed to
-    # remove nodes from it, we leave the above __str__ around and let
-    # it override at runtime.
-    def __unicode__(self):
         return u''
 
     def __len__(self):
@@ -506,6 +514,7 @@ class Undefined(object):
         return 'Undefined'
 
 
+@implements_to_string
 class DebugUndefined(Undefined):
     """An undefined that returns the debug info when printed.
 
@@ -521,7 +530,7 @@ class DebugUndefined(Undefined):
     """
     __slots__ = ()
 
-    def __unicode__(self):
+    def __str__(self):
         if self._undefined_hint is None:
             if self._undefined_obj is missing:
                 return u'{{ %s }}' % self._undefined_name
@@ -532,6 +541,7 @@ class DebugUndefined(Undefined):
         return u'{{ undefined value printed: %s }}' % self._undefined_hint
 
 
+@implements_to_string
 class StrictUndefined(Undefined):
     """An undefined that barks on print and iteration as well as boolean
     tests and all kinds of comparisons.  In other words: you can do nothing
@@ -552,7 +562,7 @@ class StrictUndefined(Undefined):
     UndefinedError: 'foo' is undefined
     """
     __slots__ = ()
-    __iter__ = __unicode__ = __str__ = __len__ = __nonzero__ = __eq__ = \
+    __iter__ = __str__ = __len__ = __nonzero__ = __eq__ = \
         __ne__ = __bool__ = Undefined._fail_with_undefined_error
 
 
diff --git a/modules/matlab/generator/jinja2/utils.py b/modules/matlab/generator/jinja2/utils.py
index 568c63f9f8..1c717899b7 100644
--- a/modules/matlab/generator/jinja2/utils.py
+++ b/modules/matlab/generator/jinja2/utils.py
@@ -9,25 +9,18 @@
     :license: BSD, see LICENSE for more details.
 """
 import re
-import sys
 import errno
-try:
-    from urllib.parse import quote_from_bytes as url_quote
-except ImportError:
-    from urllib import quote as url_quote
-try:
-    from thread import allocate_lock
-except ImportError:
-    from dummy_thread import allocate_lock
 from collections import deque
-from itertools import imap
+from threading import Lock
+from jinja2._compat import text_type, string_types, implements_iterator, \
+     url_quote
 
 
 _word_split_re = re.compile(r'(\s+)')
 _punctuation_re = re.compile(
     '^(?P<lead>(?:%s)*)(?P<middle>.*?)(?P<trail>(?:%s)*)$' % (
-        '|'.join(imap(re.escape, ('(', '<', '&lt;'))),
-        '|'.join(imap(re.escape, ('.', ',', ')', '>', '\n', '&gt;')))
+        '|'.join(map(re.escape, ('(', '<', '&lt;'))),
+        '|'.join(map(re.escape, ('.', ',', ')', '>', '\n', '&gt;')))
     )
 )
 _simple_email_re = re.compile(r'^\S+@[a-zA-Z0-9._-]+\.[a-zA-Z0-9._-]+$')
@@ -42,77 +35,7 @@ missing = type('MissingType', (), {'__repr__': lambda x: 'missing'})()
 # internal code
 internal_code = set()
 
-
-# concatenate a list of strings and convert them to unicode.
-# unfortunately there is a bug in python 2.4 and lower that causes
-# unicode.join trash the traceback.
-_concat = u''.join
-try:
-    def _test_gen_bug():
-        raise TypeError(_test_gen_bug)
-        yield None
-    _concat(_test_gen_bug())
-except TypeError, _error:
-    if not _error.args or _error.args[0] is not _test_gen_bug:
-        def concat(gen):
-            try:
-                return _concat(list(gen))
-            except Exception:
-                # this hack is needed so that the current frame
-                # does not show up in the traceback.
-                exc_type, exc_value, tb = sys.exc_info()
-                raise exc_type, exc_value, tb.tb_next
-    else:
-        concat = _concat
-    del _test_gen_bug, _error
-
-
-# for python 2.x we create ourselves a next() function that does the
-# basics without exception catching.
-try:
-    next = next
-except NameError:
-    def next(x):
-        return x.next()
-
-
-# if this python version is unable to deal with unicode filenames
-# when passed to encode we let this function encode it properly.
-# This is used in a couple of places.  As far as Jinja is concerned
-# filenames are unicode *or* bytestrings in 2.x and unicode only in
-# 3.x because compile cannot handle bytes
-if sys.version_info < (3, 0):
-    def _encode_filename(filename):
-        if isinstance(filename, unicode):
-            return filename.encode('utf-8')
-        return filename
-else:
-    def _encode_filename(filename):
-        assert filename is None or isinstance(filename, str), \
-            'filenames must be strings'
-        return filename
-
-from keyword import iskeyword as is_python_keyword
-
-
-# common types.  These do exist in the special types module too which however
-# does not exist in IronPython out of the box.  Also that way we don't have
-# to deal with implementation specific stuff here
-class _C(object):
-    def method(self): pass
-def _func():
-    yield None
-FunctionType = type(_func)
-GeneratorType = type(_func())
-MethodType = type(_C.method)
-CodeType = type(_C.method.func_code)
-try:
-    raise TypeError()
-except TypeError:
-    _tb = sys.exc_info()[2]
-    TracebackType = type(_tb)
-    FrameType = type(_tb.tb_frame)
-del _C, _tb, _func
+concat = u''.join
 
 
 def contextfunction(f):
@@ -156,7 +79,7 @@ def environmentfunction(f):
 
 def internalcode(f):
     """Marks the function as internally used"""
-    internal_code.add(f.func_code)
+    internal_code.add(f.__code__)
     return f
 
 
@@ -226,7 +149,7 @@ def open_if_exists(filename, mode='rb'):
     """
     try:
         return open(filename, mode)
-    except IOError, e:
+    except IOError as e:
         if e.errno not in (errno.ENOENT, errno.EISDIR):
             raise
 
@@ -275,7 +198,7 @@ def urlize(text, trim_url_limit=None, nofollow=False):
     trim_url = lambda x, limit=trim_url_limit: limit is not None \
                          and (x[:limit] + (len(x) >=limit and '...'
                          or '')) or x
-    words = _word_split_re.split(unicode(escape(text)))
+    words = _word_split_re.split(text_type(escape(text)))
     nofollow_attr = nofollow and ' rel="nofollow"' or ''
     for i, word in enumerate(words):
         match = _punctuation_re.match(word)
@@ -284,6 +207,7 @@ def urlize(text, trim_url_limit=None, nofollow=False):
             if middle.startswith('www.') or (
                 '@' not in middle and
                 not middle.startswith('http://') and
+                not middle.startswith('https://') and
                 len(middle) > 0 and
                 middle[0] in _letters + _digits and (
                     middle.endswith('.org') or
@@ -311,7 +235,7 @@ def generate_lorem_ipsum(n=5, html=True, min=20, max=100):
     words = LOREM_IPSUM_WORDS.split()
     result = []
 
-    for _ in xrange(n):
+    for _ in range(n):
         next_capitalized = True
         last_comma = last_fullstop = 0
         word = None
@@ -319,7 +243,7 @@ def generate_lorem_ipsum(n=5, html=True, min=20, max=100):
         p = []
 
         # each paragraph contains out of 20 to 100 words.
-        for idx, _ in enumerate(xrange(randrange(min, max))):
+        for idx, _ in enumerate(range(randrange(min, max))):
             while True:
                 word = choice(words)
                 if word != last:
@@ -361,11 +285,11 @@ def unicode_urlencode(obj, charset='utf-8'):
     If non strings are provided they are converted to their unicode
     representation first.
     """
-    if not isinstance(obj, basestring):
-        obj = unicode(obj)
-    if isinstance(obj, unicode):
+    if not isinstance(obj, string_types):
+        obj = text_type(obj)
+    if isinstance(obj, text_type):
         obj = obj.encode(charset)
-    return unicode(url_quote(obj))
+    return text_type(url_quote(obj))
 
 
 class LRUCache(object):
@@ -385,18 +309,10 @@ class LRUCache(object):
         # alias all queue methods for faster lookup
         self._popleft = self._queue.popleft
         self._pop = self._queue.pop
-        if hasattr(self._queue, 'remove'):
-            self._remove = self._queue.remove
-        self._wlock = allocate_lock()
+        self._remove = self._queue.remove
+        self._wlock = Lock()
         self._append = self._queue.append
 
-    def _remove(self, obj):
-        """Python 2.4 compatibility."""
-        for idx, item in enumerate(self._queue):
-            if item == obj:
-                del self._queue[idx]
-                break
-
     def __getstate__(self):
         return {
             'capacity':     self.capacity,
@@ -429,11 +345,15 @@ class LRUCache(object):
         """Set `default` if the key is not in the cache otherwise
         leave unchanged. Return the value of this key.
         """
+        self._wlock.acquire()
         try:
-            return self[key]
-        except KeyError:
-            self[key] = default
-            return default
+            try:
+                return self[key]
+            except KeyError:
+                self[key] = default
+                return default
+        finally:
+            self._wlock.release()
 
     def clear(self):
         """Clear the cache."""
@@ -464,17 +384,21 @@ class LRUCache(object):
 
         Raise a `KeyError` if it does not exist.
         """
-        rv = self._mapping[key]
-        if self._queue[-1] != key:
-            try:
-                self._remove(key)
-            except ValueError:
-                # if something removed the key from the container
-                # when we read, ignore the ValueError that we would
-                # get otherwise.
-                pass
-            self._append(key)
-        return rv
+        self._wlock.acquire()
+        try:
+            rv = self._mapping[key]
+            if self._queue[-1] != key:
+                try:
+                    self._remove(key)
+                except ValueError:
+                    # if something removed the key from the container
+                    # when we read, ignore the ValueError that we would
+                    # get otherwise.
+                    pass
+                self._append(key)
+            return rv
+        finally:
+            self._wlock.release()
 
     def __setitem__(self, key, value):
         """Sets the value for an item. Moves the item up so that it
@@ -483,11 +407,7 @@ class LRUCache(object):
         self._wlock.acquire()
         try:
             if key in self._mapping:
-                try:
-                    self._remove(key)
-                except ValueError:
-                    # __getitem__ is not locked, it might happen
-                    pass
+                self._remove(key)
             elif len(self._mapping) == self.capacity:
                 del self._mapping[self._popleft()]
             self._append(key)
@@ -557,6 +477,7 @@ except ImportError:
     pass
 
 
+@implements_iterator
 class Cycler(object):
     """A cycle helper for templates."""
 
@@ -575,7 +496,7 @@ class Cycler(object):
         """Returns the current item."""
         return self.items[self.pos]
 
-    def next(self):
+    def __next__(self):
         """Goes one item ahead and returns it."""
         rv = self.current
         self.pos = (self.pos + 1) % len(self.items)
@@ -596,25 +517,5 @@ class Joiner(object):
         return self.sep
 
 
-# try markupsafe first, if that fails go with Jinja2's bundled version
-# of markupsafe.  Markupsafe was previously Jinja2's implementation of
-# the Markup object but was moved into a separate package in a patchlevel
-# release
-try:
-    from markupsafe import Markup, escape, soft_unicode
-except ImportError:
-    from jinja2._markupsafe import Markup, escape, soft_unicode
-
-
-# partials
-try:
-    from functools import partial
-except ImportError:
-    class partial(object):
-        def __init__(self, _func, *args, **kwargs):
-            self._func = _func
-            self._args = args
-            self._kwargs = kwargs
-        def __call__(self, *args, **kwargs):
-            kwargs.update(self._kwargs)
-            return self._func(*(self._args + args), **kwargs)
+# Imported here because that's where it was in the past
+from markupsafe import Markup, escape, soft_unicode