Added support for Python 3. (Roland Puntaier)

28 files changed, 4229 insertions, 58 deletions

diff --git a/Filelist b/Filelist
index 9585fc522d..ea6d7806f0 100644
--- a/Filelist
+++ b/Filelist
@@ -216,6 +216,7 @@ SRC_DOS_UNIX =	\
 		src/if_perl.xs \
 		src/if_perlsfio.c \
 		src/if_python.c \
+		src/if_python3.c \
 		src/if_ruby.c \
 		src/if_sniff.h \
 		src/if_tcl.c \
@@ -225,6 +226,7 @@ SRC_DOS_UNIX =	\
 		src/proto/if_perl.pro \
 		src/proto/if_perlsfio.pro \
 		src/proto/if_python.pro \
+		src/proto/if_python3.pro \
 		src/proto/if_ruby.pro \
 		src/proto/if_tcl.pro \
 		src/typemap \
diff --git a/Makefile b/Makefile
index 2a7f7672b6..7e95701da4 100644
--- a/Makefile
+++ b/Makefile
@@ -80,8 +80,9 @@ DOSBIN_S =  dosbin_s
 #   runtime/doc/*.txt and nsis/gvim.nsi. Other things in README_os2.txt.  For a
 #   minor/major version: src/GvimExt/GvimExt.reg, src/vim.def, src/vim16.def.
 # - Correct included_patches[] in src/version.c.
-# - Compile Vim with GTK, Perl, Python, TCL, Ruby, MZscheme, Lua (if you can
-#   make it work), Cscope and "huge" features.  Exclude workshop and SNiFF.
+# - Compile Vim with GTK, Perl, Python, Python3, TCL, Ruby, MZscheme, Lua (if
+#   you can make it work), Cscope and "huge" features.  Exclude workshop and
+#   SNiFF.
 # - With these features: "make proto" (requires cproto and Motif installed;
 #   ignore warnings for missing include files, fix problems for syntax errors).
 # - With these features: "make depend" (works best with gcc).
diff --git a/runtime/autoload/python3complete.vim b/runtime/autoload/python3complete.vim
new file mode 100644
index 0000000000..b02200be7f
--- /dev/null
+++ b/runtime/autoload/python3complete.vim
@@ -0,0 +1,606 @@
+"python3complete.vim - Omni Completion for python
+" Maintainer: Aaron Griffin <aaronmgriffin@gmail.com>
+" Version: 0.9
+" Last Updated: 18 Jun 2009
+"
+" Roland Puntaier: this file contains adaptations for python3 and is parallel to pythoncomplete.vim
+"
+" Changes
+" TODO:
+" 'info' item output can use some formatting work
+" Add an "unsafe eval" mode, to allow for return type evaluation
+" Complete basic syntax along with import statements
+"   i.e. "import url<c-x,c-o>"
+" Continue parsing on invalid line??
+"
+" v 0.9
+"   * Fixed docstring parsing for classes and functions
+"   * Fixed parsing of *args and **kwargs type arguments
+"   * Better function param parsing to handle things like tuples and
+"     lambda defaults args
+"
+" v 0.8
+"   * Fixed an issue where the FIRST assignment was always used instead of
+"   using a subsequent assignment for a variable
+"   * Fixed a scoping issue when working inside a parameterless function
+"
+"
+" v 0.7
+"   * Fixed function list sorting (_ and __ at the bottom)
+"   * Removed newline removal from docs.  It appears vim handles these better in
+"   recent patches
+"
+" v 0.6:
+"   * Fixed argument completion
+"   * Removed the 'kind' completions, as they are better indicated
+"   with real syntax
+"   * Added tuple assignment parsing (whoops, that was forgotten)
+"   * Fixed import handling when flattening scope
+"
+" v 0.5:
+" Yeah, I skipped a version number - 0.4 was never public.
+"  It was a bugfix version on top of 0.3.  This is a complete
+"  rewrite.
+"
+
+if !has('python3')
+    echo "Error: Required vim compiled with +python3"
+    finish
+endif
+
+function! python3complete#Complete(findstart, base)
+    "findstart = 1 when we need to get the text length
+    if a:findstart == 1
+        let line = getline('.')
+        let idx = col('.')
+        while idx > 0
+            let idx -= 1
+            let c = line[idx]
+            if c =~ '\w'
+                continue
+            elseif ! c =~ '\.'
+                let idx = -1
+                break
+            else
+                break
+            endif
+        endwhile
+
+        return idx
+    "findstart = 0 when we need to return the list of completions
+    else
+        "vim no longer moves the cursor upon completion... fix that
+        let line = getline('.')
+        let idx = col('.')
+        let cword = ''
+        while idx > 0
+            let idx -= 1
+            let c = line[idx]
+            if c =~ '\w' || c =~ '\.'
+                let cword = c . cword
+                continue
+            elseif strlen(cword) > 0 || idx == 0
+                break
+            endif
+        endwhile
+        execute "py3 vimpy3complete('" . cword . "', '" . a:base . "')"
+        return g:python3complete_completions
+    endif
+endfunction
+
+function! s:DefPython()
+py3 << PYTHONEOF
+import sys, tokenize, io, types
+from token import NAME, DEDENT, NEWLINE, STRING
+
+debugstmts=[]
+def dbg(s): debugstmts.append(s)
+def showdbg():
+    for d in debugstmts: print("DBG: %s " % d)
+
+def vimpy3complete(context,match):
+    global debugstmts
+    debugstmts = []
+    try:
+        import vim
+        cmpl = Completer()
+        cmpl.evalsource('\n'.join(vim.current.buffer),vim.eval("line('.')"))
+        all = cmpl.get_completions(context,match)
+        all.sort(key=lambda x:x['abbr'].replace('_','z'))
+        dictstr = '['
+        # have to do this for double quoting
+        for cmpl in all:
+            dictstr += '{'
+            for x in cmpl: dictstr += '"%s":"%s",' % (x,cmpl[x])
+            dictstr += '"icase":0},'
+        if dictstr[-1] == ',': dictstr = dictstr[:-1]
+        dictstr += ']'
+        #dbg("dict: %s" % dictstr)
+        vim.command("silent let g:python3complete_completions = %s" % dictstr)
+        #dbg("Completion dict:\n%s" % all)
+    except vim.error:
+        dbg("VIM Error: %s" % vim.error)
+
+class Completer(object):
+    def __init__(self):
+       self.compldict = {}
+       self.parser = PyParser()
+
+    def evalsource(self,text,line=0):
+        sc = self.parser.parse(text,line)
+        src = sc.get_code()
+        dbg("source: %s" % src)
+        try: exec(src,self.compldict)
+        except: dbg("parser: %s, %s" % (sys.exc_info()[0],sys.exc_info()[1]))
+        for l in sc.locals:
+            try: exec(l,self.compldict)
+            except: dbg("locals: %s, %s [%s]" % (sys.exc_info()[0],sys.exc_info()[1],l))
+
+    def _cleanstr(self,doc):
+        return doc.replace('"',' ').replace("'",' ')
+
+    def get_arguments(self,func_obj):
+        def _ctor(class_ob):
+            try: return class_ob.__init__
+            except AttributeError:
+                for base in class_ob.__bases__:
+                    rc = _ctor(base)
+                    if rc is not None: return rc
+            return None
+
+        arg_offset = 1
+        if type(func_obj) == type: func_obj = _ctor(func_obj)
+        elif type(func_obj) == types.MethodType: arg_offset = 1
+        else: arg_offset = 0
+
+        arg_text=''
+        if type(func_obj) in [types.FunctionType, types.LambdaType,types.MethodType]:
+            try:
+                cd = func_obj.__code__
+                real_args = cd.co_varnames[arg_offset:cd.co_argcount]
+                defaults = func_obj.__defaults__ or []
+                defaults = ["=%s" % name for name in defaults]
+                defaults = [""] * (len(real_args)-len(defaults)) + defaults
+                items = [a+d for a,d in zip(real_args,defaults)]
+                if func_obj.__code__.co_flags & 0x4:
+                    items.append("...")
+                if func_obj.__code__.co_flags & 0x8:
+                    items.append("***")
+                arg_text = (','.join(items)) + ')'
+            except:
+                dbg("arg completion: %s: %s" % (sys.exc_info()[0],sys.exc_info()[1]))
+                pass
+        if len(arg_text) == 0:
+            # The doc string sometimes contains the function signature
+            #  this works for alot of C modules that are part of the
+            #  standard library
+            doc = func_obj.__doc__
+            if doc:
+                doc = doc.lstrip()
+                pos = doc.find('\n')
+                if pos > 0:
+                    sigline = doc[:pos]
+                    lidx = sigline.find('(')
+                    ridx = sigline.find(')')
+                    if lidx > 0 and ridx > 0:
+                        arg_text = sigline[lidx+1:ridx] + ')'
+        if len(arg_text) == 0: arg_text = ')'
+        return arg_text
+
+    def get_completions(self,context,match):
+        #dbg("get_completions('%s','%s')" % (context,match))
+        stmt = ''
+        if context: stmt += str(context)
+        if match: stmt += str(match)
+        try:
+            result = None
+            all = {}
+            ridx = stmt.rfind('.')
+            if len(stmt) > 0 and stmt[-1] == '(':
+                result = eval(_sanitize(stmt[:-1]), self.compldict)
+                doc = result.__doc__
+                if doc is None: doc = ''
+                args = self.get_arguments(result)
+                return [{'word':self._cleanstr(args),'info':self._cleanstr(doc)}]
+            elif ridx == -1:
+                match = stmt
+                all = self.compldict
+            else:
+                match = stmt[ridx+1:]
+                stmt = _sanitize(stmt[:ridx])
+                result = eval(stmt, self.compldict)
+                all = dir(result)
+
+            dbg("completing: stmt:%s" % stmt)
+            completions = []
+
+            try: maindoc = result.__doc__
+            except: maindoc = ' '
+            if maindoc is None: maindoc = ' '
+            for m in all:
+                if m == "_PyCmplNoType": continue #this is internal
+                try:
+                    dbg('possible completion: %s' % m)
+                    if m.find(match) == 0:
+                        if result is None: inst = all[m]
+                        else: inst = getattr(result,m)
+                        try: doc = inst.__doc__
+                        except: doc = maindoc
+                        typestr = str(inst)
+                        if doc is None or doc == '': doc = maindoc
+
+                        wrd = m[len(match):]
+                        c = {'word':wrd, 'abbr':m,  'info':self._cleanstr(doc)}
+                        if "function" in typestr:
+                            c['word'] += '('
+                            c['abbr'] += '(' + self._cleanstr(self.get_arguments(inst))
+                        elif "method" in typestr:
+                            c['word'] += '('
+                            c['abbr'] += '(' + self._cleanstr(self.get_arguments(inst))
+                        elif "module" in typestr:
+                            c['word'] += '.'
+                        elif "type" in typestr:
+                            c['word'] += '('
+                            c['abbr'] += '('
+                        completions.append(c)
+                except:
+                    i = sys.exc_info()
+                    dbg("inner completion: %s,%s [stmt='%s']" % (i[0],i[1],stmt))
+            return completions
+        except:
+            i = sys.exc_info()
+            dbg("completion: %s,%s [stmt='%s']" % (i[0],i[1],stmt))
+            return []
+
+class Scope(object):
+    def __init__(self,name,indent,docstr=''):
+        self.subscopes = []
+        self.docstr = docstr
+        self.locals = []
+        self.parent = None
+        self.name = name
+        self.indent = indent
+
+    def add(self,sub):
+        #print('push scope: [%s@%s]' % (sub.name,sub.indent))
+        sub.parent = self
+        self.subscopes.append(sub)
+        return sub
+
+    def doc(self,str):
+        """ Clean up a docstring """
+        d = str.replace('\n',' ')
+        d = d.replace('\t',' ')
+        while d.find('  ') > -1: d = d.replace('  ',' ')
+        while d[0] in '"\'\t ': d = d[1:]
+        while d[-1] in '"\'\t ': d = d[:-1]
+        dbg("Scope(%s)::docstr = %s" % (self,d))
+        self.docstr = d
+
+    def local(self,loc):
+        self._checkexisting(loc)
+        self.locals.append(loc)
+
+    def copy_decl(self,indent=0):
+        """ Copy a scope's declaration only, at the specified indent level - not local variables """
+        return Scope(self.name,indent,self.docstr)
+
+    def _checkexisting(self,test):
+        "Convienance function... keep out duplicates"
+        if test.find('=') > -1:
+            var = test.split('=')[0].strip()
+            for l in self.locals:
+                if l.find('=') > -1 and var == l.split('=')[0].strip():
+                    self.locals.remove(l)
+
+    def get_code(self):
+        str = ""
+        if len(self.docstr) > 0: str += '"""'+self.docstr+'"""\n'
+        for l in self.locals:
+            if l.startswith('import'): str += l+'\n'
+        str += 'class _PyCmplNoType:\n    def __getattr__(self,name):\n        return None\n'
+        for sub in self.subscopes:
+            str += sub.get_code()
+        for l in self.locals:
+            if not l.startswith('import'): str += l+'\n'
+
+        return str
+
+    def pop(self,indent):
+        #print('pop scope: [%s] to [%s]' % (self.indent,indent))
+        outer = self
+        while outer.parent != None and outer.indent >= indent:
+            outer = outer.parent
+        return outer
+
+    def currentindent(self):
+        #print('parse current indent: %s' % self.indent)
+        return '    '*self.indent
+
+    def childindent(self):
+        #print('parse child indent: [%s]' % (self.indent+1))
+        return '    '*(self.indent+1)
+
+class Class(Scope):
+    def __init__(self, name, supers, indent, docstr=''):
+        Scope.__init__(self,name,indent, docstr)
+        self.supers = supers
+    def copy_decl(self,indent=0):
+        c = Class(self.name,self.supers,indent, self.docstr)
+        for s in self.subscopes:
+            c.add(s.copy_decl(indent+1))
+        return c
+    def get_code(self):
+        str = '%sclass %s' % (self.currentindent(),self.name)
+        if len(self.supers) > 0: str += '(%s)' % ','.join(self.supers)
+        str += ':\n'
+        if len(self.docstr) > 0: str += self.childindent()+'"""'+self.docstr+'"""\n'
+        if len(self.subscopes) > 0:
+            for s in self.subscopes: str += s.get_code()
+        else:
+            str += '%spass\n' % self.childindent()
+        return str
+
+
+class Function(Scope):
+    def __init__(self, name, params, indent, docstr=''):
+        Scope.__init__(self,name,indent, docstr)
+        self.params = params
+    def copy_decl(self,indent=0):
+        return Function(self.name,self.params,indent, self.docstr)
+    def get_code(self):
+        str = "%sdef %s(%s):\n" % \
+            (self.currentindent(),self.name,','.join(self.params))
+        if len(self.docstr) > 0: str += self.childindent()+'"""'+self.docstr+'"""\n'
+        str += "%spass\n" % self.childindent()
+        return str
+
+class PyParser:
+    def __init__(self):
+        self.top = Scope('global',0)
+        self.scope = self.top
+
+    def _parsedotname(self,pre=None):
+        #returns (dottedname, nexttoken)
+        name = []
+        if pre is None:
+            tokentype, token, indent = self.donext()
+            if tokentype != NAME and token != '*':
+                return ('', token)
+        else: token = pre
+        name.append(token)
+        while True:
+            tokentype, token, indent = self.donext()
+            if token != '.': break
+            tokentype, token, indent = self.donext()
+            if tokentype != NAME: break
+            name.append(token)
+        return (".".join(name), token)
+
+    def _parseimportlist(self):
+        imports = []
+        while True:
+            name, token = self._parsedotname()
+            if not name: break
+            name2 = ''
+            if token == 'as': name2, token = self._parsedotname()
+            imports.append((name, name2))
+            while token != "," and "\n" not in token:
+                tokentype, token, indent = self.donext()
+            if token != ",": break
+        return imports
+
+    def _parenparse(self):
+        name = ''
+        names = []
+        level = 1
+        while True:
+            tokentype, token, indent = self.donext()
+            if token in (')', ',') and level == 1:
+                if '=' not in name: name = name.replace(' ', '')
+                names.append(name.strip())
+                name = ''
+            if token == '(':
+                level += 1
+                name += "("
+            elif token == ')':
+                level -= 1
+                if level == 0: break
+                else: name += ")"
+            elif token == ',' and level == 1:
+                pass
+            else:
+                name += "%s " % str(token)
+        return names
+
+    def _parsefunction(self,indent):
+        self.scope=self.scope.pop(indent)
+        tokentype, fname, ind = self.donext()
+        if tokentype != NAME: return None
+
+        tokentype, open, ind = self.donext()
+        if open != '(': return None
+        params=self._parenparse()
+
+        tokentype, colon, ind = self.donext()
+        if colon != ':': return None
+
+        return Function(fname,params,indent)
+
+    def _parseclass(self,indent):
+        self.scope=self.scope.pop(indent)
+        tokentype, cname, ind = self.donext()
+        if tokentype != NAME: return None
+
+        super = []
+        tokentype, thenext, ind = self.donext()
+        if thenext == '(':
+            super=self._parenparse()
+        elif thenext != ':': return None
+
+        return Class(cname,super,indent)
+
+    def _parseassignment(self):
+        assign=''
+        tokentype, token, indent = self.donext()
+        if tokentype == tokenize.STRING or token == 'str':  
+            return '""'
+        elif token == '(' or token == 'tuple':
+            return '()'
+        elif token == '[' or token == 'list':
+            return '[]'
+        elif token == '{' or token == 'dict':
+            return '{}'
+        elif tokentype == tokenize.NUMBER:
+            return '0'
+        elif token == 'open' or token == 'file':
+            return 'file'
+        elif token == 'None':
+            return '_PyCmplNoType()'
+        elif token == 'type':
+            return 'type(_PyCmplNoType)' #only for method resolution
+        else:
+            assign += token
+            level = 0
+            while True:
+                tokentype, token, indent = self.donext()
+                if token in ('(','{','['):
+                    level += 1
+                elif token in (']','}',')'):
+                    level -= 1
+                    if level == 0: break
+                elif level == 0:
+                    if token in (';','\n'): break
+                    assign += token
+        return "%s" % assign
+
+    def donext(self):
+        type, token, (lineno, indent), end, self.parserline = next(self.gen)
+        if lineno == self.curline:
+            #print('line found [%s] scope=%s' % (line.replace('\n',''),self.scope.name))
+            self.currentscope = self.scope
+        return (type, token, indent)
+
+    def _adjustvisibility(self):
+        newscope = Scope('result',0)
+        scp = self.currentscope
+        while scp != None:
+            if type(scp) == Function:
+                slice = 0
+                #Handle 'self' params
+                if scp.parent != None and type(scp.parent) == Class:
+                    slice = 1
+                    newscope.local('%s = %s' % (scp.params[0],scp.parent.name))
+                for p in scp.params[slice:]:
+                    i = p.find('=')
+                    if len(p) == 0: continue
+                    pvar = ''
+                    ptype = ''
+                    if i == -1:
+                        pvar = p
+                        ptype = '_PyCmplNoType()'
+                    else:
+                        pvar = p[:i]
+                        ptype = _sanitize(p[i+1:])
+                    if pvar.startswith('**'):
+                        pvar = pvar[2:]
+                        ptype = '{}'
+                    elif pvar.startswith('*'):
+                        pvar = pvar[1:]
+                        ptype = '[]'
+
+                    newscope.local('%s = %s' % (pvar,ptype))
+
+            for s in scp.subscopes:
+                ns = s.copy_decl(0)
+                newscope.add(ns)
+            for l in scp.locals: newscope.local(l)
+            scp = scp.parent
+
+        self.currentscope = newscope
+        return self.currentscope
+
+    #p.parse(vim.current.buffer[:],vim.eval("line('.')"))
+    def parse(self,text,curline=0):
+        self.curline = int(curline)
+        buf = io.StringIO(''.join(text) + '\n')
+        self.gen = tokenize.generate_tokens(buf.readline)
+        self.currentscope = self.scope
+
+        try:
+            freshscope=True
+            while True:
+                tokentype, token, indent = self.donext()
+                #dbg( 'main: token=[%s] indent=[%s]' % (token,indent))
+
+                if tokentype == DEDENT or token == "pass":
+                    self.scope = self.scope.pop(indent)
+                elif token == 'def':
+                    func = self._parsefunction(indent)
+                    if func is None:
+                        print("function: syntax error...")
+                        continue
+                    dbg("new scope: function")
+                    freshscope = True
+                    self.scope = self.scope.add(func)
+                elif token == 'class':
+                    cls = self._parseclass(indent)
+                    if cls is None:
+                        print("class: syntax error...")
+                        continue
+                    freshscope = True
+                    dbg("new scope: class")
+                    self.scope = self.scope.add(cls)
+                    
+                elif token == 'import':
+                    imports = self._parseimportlist()
+                    for mod, alias in imports:
+                        loc = "import %s" % mod
+                        if len(alias) > 0: loc += " as %s" % alias
+                        self.scope.local(loc)
+                    freshscope = False
+                elif token == 'from':
+                    mod, token = self._parsedotname()
+                    if not mod or token != "import":
+                        print("from: syntax error...")
+                        continue
+                    names = self._parseimportlist()
+                    for name, alias in names:
+                        loc = "from %s import %s" % (mod,name)
+                        if len(alias) > 0: loc += " as %s" % alias
+                        self.scope.local(loc)
+                    freshscope = False
+                elif tokentype == STRING:
+                    if freshscope: self.scope.doc(token)
+                elif tokentype == NAME:
+                    name,token = self._parsedotname(token) 
+                    if token == '=':
+                        stmt = self._parseassignment()
+                        dbg("parseassignment: %s = %s" % (name, stmt))
+                        if stmt != None:
+                            self.scope.local("%s = %s" % (name,stmt))
+                    freshscope = False
+        except StopIteration: #thrown on EOF
+            pass
+        except:
+            dbg("parse error: %s, %s @ %s" %
+                (sys.exc_info()[0], sys.exc_info()[1], self.parserline))
+        return self._adjustvisibility()
+
+def _sanitize(str):
+    val = ''
+    level = 0
+    for c in str:
+        if c in ('(','{','['):
+            level += 1
+        elif c in (']','}',')'):
+            level -= 1
+        elif level == 0:
+            val += c
+    return val
+
+sys.path.extend(['.','..'])
+PYTHONEOF
+endfunction
+
+call s:DefPython()
diff --git a/runtime/doc/todo.txt b/runtime/doc/todo.txt
index 4082b0a570..db01d3aa11 100644
--- a/runtime/doc/todo.txt
+++ b/runtime/doc/todo.txt
@@ -1089,17 +1089,12 @@ Before (beta) release 7.3:
 - Add fixes for 7.2 to version7.txt
 - Add hg history to version7.txt
 - Remove UF_VERSION_CRYPT_PREV and UF_VERSION_PREV.
+- Build the MS-Windows version with Python 2.6.5 and 3.1.2?
 
 Before release 7.3:
 - Rename vim73 branch to default (hints: Xavier de Gaye, 2010 May 23)
 
 Vim 7.3:
-Patches to possibly include:
--   Patch for Python 3 support. (Roland Puntaier, 2009 Sep 22)
-    Includes changes for omnicompletion.
-    Needs some more testing.
-    Update 2010 Apr 20, patch by Andy Kittner, May 16
-    Build the MS-Windows version with Python 2.6.5 and 3.1.2?
 Needs some work:
 -   Have a look at patch to enable screen access from Python. (Marko Mahnic,
     2010 Apr 12)
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 46667486ab..db1f522f75 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -16,7 +16,7 @@ syn keyword vimTodo contained	COMBAK	FIXME	TODO	XXX
 syn cluster vimCommentGroup	contains=vimTodo,@Spell
 
 " regular vim commands {{{2
-syn keyword vimCommand contained	abc[lear] argdo argu[ment] bel[owright] bN[ext] breakd[el] b[uffer] caddb[uffer] cb[uffer] cex[pr] cg[etfile] checkt[ime] cnew[er] col[der] con[tinue] cq[uit] delc[ommand] diffoff diffu[pdate] dr[op] echoe[rr] el[se] endfo[r] endw[hile] f[ile] fin[d] fo[ld] foldo[pen] gr[ep] his[tory] il[ist] iuna[bbrev] keepalt lad[dexpr] later lcl[ose] lf[ile] lg[etfile] ll lmapc[lear] lnf[ile] lockv[ar] lp[revious] lv[imgrep] ma[rk] mk[exrc] mkv[imrc] mz[scheme] new noh[lsearch] on[ly] ped[it] popu prev[ious] prof[ile] pta[g] ptn[ext] pts[elect] py[thon] r[ead] redr[aw] ret[ab] rightb[elow] rundo san[dbox] sbf[irst] sbN[ext] scripte[ncoding] setg[lobal] sh[ell] sla[st] sme sni[ff] sor[t] spelli[nfo] sp[lit] startg[replace] st[op] sunme syncbind tabd[o] tabl[ast] tabN[ext] tabs tcld[o] th[row] tm[enu] tp[revious] tu undoj[oin] uns[ilent] vert[ical] vi[sual] wa[ll] winp[os] wp[revious] ws[verb] xa[ll] xmenu xnoremenu
+syn keyword vimCommand contained	abc[lear] argdo argu[ment] bel[owright] bN[ext] breakd[el] b[uffer] caddb[uffer] cb[uffer] cex[pr] cg[etfile] checkt[ime] cnew[er] col[der] con[tinue] cq[uit] delc[ommand] diffoff diffu[pdate] dr[op] echoe[rr] el[se] endfo[r] endw[hile] f[ile] fin[d] fo[ld] foldo[pen] gr[ep] his[tory] il[ist] iuna[bbrev] keepalt lad[dexpr] later lcl[ose] lf[ile] lg[etfile] ll lmapc[lear] lnf[ile] lockv[ar] lp[revious] lv[imgrep] ma[rk] mk[exrc] mkv[imrc] mz[scheme] new noh[lsearch] on[ly] ped[it] popu prev[ious] prof[ile] pta[g] ptn[ext] pts[elect] py[thon] py3 r[ead] redr[aw] ret[ab] rightb[elow] rundo san[dbox] sbf[irst] sbN[ext] scripte[ncoding] setg[lobal] sh[ell] sla[st] sme sni[ff] sor[t] spelli[nfo] sp[lit] startg[replace] st[op] sunme syncbind tabd[o] tabl[ast] tabN[ext] tabs tcld[o] th[row] tm[enu] tp[revious] tu undoj[oin] uns[ilent] vert[ical] vi[sual] wa[ll] winp[os] wp[revious] ws[verb] xa[ll] xmenu xnoremenu
 syn keyword vimCommand contained	abo[veleft] arge[dit] as[cii] bf[irst] bo[tright] breakl[ist] buffers cad[dexpr] cc cf[ile] c[hange] cla[st] cn[ext] colo[rscheme] cope[n] cr[ewind] d[elete] diffpatch dig[raphs] ds[earch] echom[sg] elsei[f] endf[unction] ene[w] files fini[sh] foldc[lose] for grepa[dd] iabc[lear] imapc[lear] j[oin] keepj[umps] laddf[ile] lb[uffer] le[ft] lfir[st] lgr[ep] lla[st] lnew[er] lNf[ile] lol[der] lr[ewind] lvimgrepa[dd] marks mks[ession] mod[e] nbc[lose] n[ext] nu[mber] o[pen] pe[rl] popu[p] p[rint] promptf[ind] ptf[irst] ptN[ext] pu[t] qa[ll] rec[over] redraws[tatus] retu[rn] rub[y] ru[ntime] sa[rgument] sbl[ast] sbp[revious] scrip[tnames] setl[ocal] sign sl[eep] smenu sno[magic] so[urce] spellr[epall] spr[evious] star[tinsert] stopi[nsert] sunmenu t tabe[dit] tabm[ove] tabo[nly] ta[g] tclf[ile] tj[ump] tn[ext] tr[ewind] tu[nmenu] undol[ist] up[date] vie[w] vmapc[lear] wh[ile] win[size] wq wundo x[it] XMLent xunme
 syn keyword vimCommand contained	al[l] argg[lobal] bad[d] bl[ast] bp[revious] br[ewind] bun[load] caddf[ile] ccl[ose] cfir[st] changes cl[ist] cN[ext] comc[lear] co[py] cuna[bbrev] delf[unction] diffpu[t] di[splay] dsp[lit] echon em[enu] en[dif] ex filetype fir[st] folddoc[losed] fu[nction] ha[rdcopy] if is[earch] ju[mps] kee[pmarks] lan[guage] lc[d] lefta[bove] lgetb[uffer] lgrepa[dd] lli[st] lne[xt] lo[adview] lop[en] ls lw[indow] mat[ch] mksp[ell] m[ove] nb[key] N[ext] ol[dfiles] opt[ions] perld[o] pp[op] P[rint] promptr[epl] ptj[ump] ptp[revious] pw[d] q[uit] redi[r] reg[isters] rew[ind] rubyd[o] rv[iminfo] sav[eas] sbm[odified] sbr[ewind] se[t] sf[ind] sil[ent] sm[agic] sn[ext] snoreme spelld[ump] spellu[ndo] sre[wind] startr[eplace] sts[elect] sus[pend] tab tabf[ind] tabnew tabp[revious] tags te[aroff] tl[ast] tN[ext] try una[bbreviate] unh[ide] verb[ose] vim[grep] vne[w] winc[md] wn[ext] wqa[ll] wv[iminfo] xmapc[lear] XMLns xunmenu
 syn keyword vimCommand contained	arga[dd] argl[ocal] ba[ll] bm[odified] brea[k] bro[wse] bw[ipeout] cal[l] cd cgetb[uffer] chd[ir] clo[se] cnf[ile] comp[iler] cpf[ile] cw[indow] delm[arks] diffsplit dj[ump] earlier e[dit] emenu* endt[ry] exi[t] fina[lly] fix[del] foldd[oopen] go[to] hid[e] ij[ump] isp[lit] k laddb[uffer] la[st] lch[dir] lex[pr] lgete[xpr] l[ist] lmak[e] lN[ext] loc[kmarks] lpf[ile] lt[ag] mak[e] menut[ranslate] mkvie[w] mzf[ile] nbs[tart] nmapc[lear] omapc[lear] pc[lose] po[p] pre[serve] profd[el] ps[earch] ptl[ast] ptr[ewind] pyf[ile] quita[ll] red[o] res[ize] ri[ght] rubyf[ile] sal[l] sba[ll] sbn[ext] sb[uffer] setf[iletype] sfir[st] sim[alt] sm[ap] sN[ext] snoremenu spe[llgood] spellw[rong] sta[g] stj[ump] sun[hide] sv[iew] tabc[lose] tabfir[st] tabn[ext] tabr[ewind] tc[l] tf[irst] tm to[pleft] ts[elect] u[ndo] unlo[ckvar] ve[rsion] vimgrepa[dd] vs[plit] windo wN[ext] w[rite] X xme xnoreme y[ank]
@@ -594,16 +594,16 @@ if (g:vimsyn_embed =~ 'P' && has("python")) && filereadable(s:pythonpath)
  unlet! b:current_syntax
  exe "syn include @vimPythonScript ".s:pythonpath
  if exists("g:vimsyn_folding") && g:vimsyn_folding =~ 'P'
-  syn region vimPythonRegion fold matchgroup=vimScriptDelim start=+py\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimPythonScript
-  syn region vimPythonRegion fold matchgroup=vimScriptDelim start=+py\%[thon]\s*<<\s*$+ end=+\.$+	contains=@vimPythonScript
+  syn region vimPythonRegion fold matchgroup=vimScriptDelim start=+py[3]\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimPythonScript
+  syn region vimPythonRegion fold matchgroup=vimScriptDelim start=+py[3]\%[thon]\s*<<\s*$+ end=+\.$+	contains=@vimPythonScript
  else
-  syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimPythonScript
-  syn region vimPythonRegion matchgroup=vimScriptDelim start=+py\%[thon]\s*<<\s*$+ end=+\.$+	contains=@vimPythonScript
+  syn region vimPythonRegion matchgroup=vimScriptDelim start=+py[3]\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+	contains=@vimPythonScript
+  syn region vimPythonRegion matchgroup=vimScriptDelim start=+py[3]\%[thon]\s*<<\s*$+ end=+\.$+	contains=@vimPythonScript
  endif
  syn cluster vimFuncBodyList	add=vimPythonRegion
 else
- syn region vimEmbedError start=+py\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+
- syn region vimEmbedError start=+py\%[thon]\s*<<\s*$+ end=+\.$+
+ syn region vimEmbedError start=+py[3]\%[thon]\s*<<\s*\z(.*\)$+ end=+^\z1$+
+ syn region vimEmbedError start=+py[3]\%[thon]\s*<<\s*$+ end=+\.$+
 endif
 unlet s:pythonpath
 
diff --git a/src/Make_bc5.mak b/src/Make_bc5.mak
index c3ddf00f62..739fc62ed1 100644
--- a/src/Make_bc5.mak
+++ b/src/Make_bc5.mak
@@ -44,6 +44,9 @@
 # PYTHON	define to path to Python dir to get PYTHON support (not defined)
 #   PYTHON_VER	    define to version of Python being used (22)
 #   DYNAMIC_PYTHON  no or yes: use yes to load the Python DLL dynamically (no)
+# PYTHON3	define to path to Python3 dir to get PYTHON3 support (not defined)
+#   PYTHON3_VER	    define to version of Python3 being used (31)
+#   DYNAMIC_PYTHON3  no or yes: use yes to load the Python3 DLL dynamically (no)
 # TCL		define to path to TCL dir to get TCL support (not defined)