diff --git a/playground/implicit_order/wscript b/playground/implicit_order/wscript
index 3949a51f..2d4905c1 100644
--- a/playground/implicit_order/wscript
+++ b/playground/implicit_order/wscript
@@ -41,9 +41,9 @@ def are_implicit_nodes_ready(self):
 		bld.dct_implicit_nodes = cache = {}
 
 	try:
-		dct = cache[bld.cur]
+		dct = cache[bld.current_group]
 	except KeyError:
-		dct = cache[bld.cur] = {}
+		dct = cache[bld.current_group] = {}
 		for tsk in bld.cur_tasks:
 			for x in tsk.outputs:
 				dct[x] = tsk
diff --git a/waflib/Build.py b/waflib/Build.py
index 5127e33d..1e61e15f 100644
--- a/waflib/Build.py
+++ b/waflib/Build.py
@@ -716,11 +716,11 @@ class BuildContext(Context.Context):
 
 	def post_group(self):
 		"""
-		Post task generators from the group indexed by self.cur; used internally
+		Post task generators from the group indexed by self.current_group; used internally
 		by :py:meth:`waflib.Build.BuildContext.get_build_iterator`
 		"""
 		if self.targets == '*':
-			for tg in self.groups[self.cur]:
+			for tg in self.groups[self.current_group]:
 				try:
 					f = tg.post
 				except AttributeError:
@@ -728,8 +728,8 @@ class BuildContext(Context.Context):
 				else:
 					f()
 		elif self.targets:
-			if self.cur < self._min_grp:
-				for tg in self.groups[self.cur]:
+			if self.current_group < self._min_grp:
+				for tg in self.groups[self.current_group]:
 					try:
 						f = tg.post
 					except AttributeError:
@@ -747,7 +747,7 @@ class BuildContext(Context.Context):
 			elif not ln.is_child_of(self.srcnode):
 				Logs.warn('CWD %s is not under %s, forcing --targets=* (run distclean?)', ln.abspath(), self.srcnode.abspath())
 				ln = self.srcnode
-			for tg in self.groups[self.cur]:
+			for tg in self.groups[self.current_group]:
 				try:
 					f = tg.post
 				except AttributeError:
@@ -778,25 +778,25 @@ class BuildContext(Context.Context):
 		:return: tasks which can be executed immediately
 		:rtype: generator returning lists of :py:class:`waflib.Task.Task`
 		"""
-		self.cur = 0
+		self.current_group = 0
 
 		if self.targets and self.targets != '*':
 			(self._min_grp, self._exact_tg) = self.get_targets()
 
 		global lazy_post
 		if self.post_mode != POST_LAZY:
-			while self.cur < len(self.groups):
+			while self.current_group < len(self.groups):
 				self.post_group()
-				self.cur += 1
-			self.cur = 0
+				self.current_group += 1
+			self.current_group = 0
 
-		while self.cur < len(self.groups):
+		while self.current_group < len(self.groups):
 			# first post the task generators for the group
 			if self.post_mode != POST_AT_ONCE:
 				self.post_group()
 
 			# then extract the tasks
-			tasks = self.get_tasks_group(self.cur)
+			tasks = self.get_tasks_group(self.current_group)
 			# if the constraints are set properly (ext_in/ext_out, before/after)
 			# the call to set_file_constraints may be removed (can be a 15% penalty on no-op rebuilds)
 			# (but leave set_file_constraints for the installation step)
@@ -807,7 +807,7 @@ class BuildContext(Context.Context):
 			Task.set_precedence_constraints(tasks)
 
 			self.cur_tasks = tasks
-			self.cur += 1
+			self.current_group += 1
 			if not tasks: # return something else the build will stop
 				continue
 			yield tasks
diff --git a/waflib/Task.py b/waflib/Task.py
index 34504894..c0858569 100644
--- a/waflib/Task.py
+++ b/waflib/Task.py
@@ -797,9 +797,9 @@ class Task(evil):
 
 		# one cache per build group
 		try:
-			dct = cache[bld.cur]
+			dct = cache[bld.current_group]
 		except KeyError:
-			dct = cache[bld.cur] = {}
+			dct = cache[bld.current_group] = {}
 			for tsk in bld.cur_tasks:
 				for x in tsk.outputs:
 					dct[x] = tsk
diff --git a/waflib/extras/xcode6.py b/waflib/extras/xcode6.py
index 5357110b..83dd5c50 100644
--- a/waflib/extras/xcode6.py
+++ b/waflib/extras/xcode6.py
@@ -664,10 +664,10 @@ class xcode(Build.BuildContext):
 
 		# post all task generators
 		# the process_xcode method above will be called for each target
-		self.cur = 0
-		while self.cur < len(self.groups):
+		self.current_group = 0
+		while self.current_group < len(self.groups):
 			self.post_group()
-			self.cur += 1
+			self.current_group += 1
 
 		node = self.bldnode.make_node('%s.xcodeproj' % appname)
 		node.mkdir()