Avoids unnecessary printing of call into to internal buffers;

Made the universal value printer safer when printing char[];
Removed duplicated code in InvokeWith;
Improved gmock_doctor.py.

test/gmock-spec-builders_test.cc

@@ -1612,6 +1612,53 @@ TEST_F(GMockVerboseFlagTest, InvalidFlagIsTreatedAsWarning) {
 
 #endif  // 0
 
+// A helper class that generates a failure when printed.  We use it to
+// ensure that Google Mock doesn't print a value (even to an internal
+// buffer) when it is not supposed to do so.
+class PrintMeNot {};
+
+void PrintTo(PrintMeNot /* dummy */, ::std::ostream* /* os */) {
+  ADD_FAILURE() << "Google Mock is printing a value that shouldn't be "
+                << "printed even to an internal buffer.";
+}
+
+class LogTestHelper {
+ public:
+  MOCK_METHOD1(Foo, PrintMeNot(PrintMeNot));
+};
+
+class GMockLogTest : public ::testing::Test {
+ protected:
+  virtual void SetUp() { original_verbose_ = GMOCK_FLAG(verbose); }
+  virtual void TearDown() { GMOCK_FLAG(verbose) = original_verbose_; }
+
+  LogTestHelper helper_;
+  string original_verbose_;
+};
+
+TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsWarning) {
+  GMOCK_FLAG(verbose) = kWarningVerbosity;
+  EXPECT_CALL(helper_, Foo(_))
+      .WillOnce(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This is an expected call.
+}
+
+TEST_F(GMockLogTest, DoesNotPrintGoodCallInternallyIfVerbosityIsError) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  EXPECT_CALL(helper_, Foo(_))
+      .WillOnce(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This is an expected call.
+}
+
+TEST_F(GMockLogTest, DoesNotPrintWarningInternallyIfVerbosityIsError) {
+  GMOCK_FLAG(verbose) = kErrorVerbosity;
+  ON_CALL(helper_, Foo(_))
+      .WillByDefault(Return(PrintMeNot()));
+  helper_.Foo(PrintMeNot());  // This should generate a warning.
+}
+
+// Tests Mock::AllowLeak().
+
 TEST(AllowLeakTest, AllowsLeakingUnusedMockObject) {
   MockA* a = new MockA;
   Mock::AllowLeak(a);