ConfHandler: Require whitespace between export and variable name

index f7d0cf74..24a0db0b 100644
@@ -32,7 +32,7 @@ from bb.parse import ParseError, resolve_file, ast, logger, handle
 
 __config_regexp__  = re.compile( r"""
     ^
-    (?P<exp>export\s*)?
+    (?P<exp>export\s+)?
     (?P<var>[a-zA-Z0-9\-_+.${}/~]+?)
     (\[(?P<flag>[a-zA-Z0-9\-_+.]+)\])?
 

@@ -110,7 +110,7 @@ def include(parentfn, fn, lineno, data, error_out):
 # We have an issue where a UI might want to enforce particular settings such as
 # an empty DISTRO variable. If configuration files do something like assigning
 # a weak default, it turns out to be very difficult to filter out these changes,
-# particularly when the weak default might appear half way though parsing a chain 
+# particularly when the weak default might appear half way though parsing a chain
 # of configuration files. We therefore let the UIs hook into configuration file
 # parsing. This turns out to be a hard problem to solve any other way.
 confFilters = []

index ab6ca903..7ad2a624 100644
@@ -83,7 +83,28 @@ unset B[flag]
         self.assertEqual(d.getVar("A"), None)
         self.assertEqual(d.getVarFlag("A","flag"), None)
         self.assertEqual(d.getVar("B"), "2")
-        
+
+    exporttest = """
+A = "a"
+export B = "b"
+export C
+exportD = "d"
+"""
+
+    def test_parse_exports(self):
+        f = self.parsehelper(self.exporttest)
+        d = bb.parse.handle(f.name, self.d)['']
+        self.assertEqual(d.getVar("A"), "a")
+        self.assertIsNone(d.getVarFlag("A", "export"))
+        self.assertEqual(d.getVar("B"), "b")
+        self.assertEqual(d.getVarFlag("B", "export"), 1)
+        self.assertIsNone(d.getVar("C"))
+        self.assertEqual(d.getVarFlag("C", "export"), 1)
+        self.assertIsNone(d.getVar("D"))
+        self.assertIsNone(d.getVarFlag("D", "export"))
+        self.assertEqual(d.getVar("exportD"), "d")
+        self.assertIsNone(d.getVarFlag("exportD", "export"))
+
 
     overridetest = """
 RRECOMMENDS_${PN} = "a"

@@ -145,10 +166,11 @@ python () {
 }
 """
 
+
     #
     # Test based upon a real world data corruption issue. One
     # data store changing a variable poked through into a different data
-    # store. This test case replicates that issue where the value 'B' would 
+    # store. This test case replicates that issue where the value 'B' would
     # become unset/disappear.
     #
     def test_parse_classextend_contamination(self):

@@ -161,4 +183,3 @@ python () {
         d2 = alldata[cls.name]
         self.assertEqual(d1.getVar("VAR_var"), "B")
         self.assertEqual(d2.getVar("VAR_var"), None)
-