diff --git a/cfg/googletest.cfg b/cfg/googletest.cfg
index 8fa199cec..bbcaf109c 100644
--- a/cfg/googletest.cfg
+++ b/cfg/googletest.cfg
@@ -1,5 +1,30 @@
 <?xml version="1.0"?>
 <def format="2">
+  <!-- see https://github.com/google/googletest/blob/master/googletest/docs/primer.md -->
+  <define name="ASSERT_TRUE(cond)" value=""/>
+  <define name="EXPECT_TRUE(cond)" value=""/>
+  <define name="ASSERT_FALSE(cond)" value=""/>
+  <define name="EXPECT_FALSE(cond)" value=""/>
+  <define name="ASSERT_EQ(val1,val2)" value=""/>
+  <define name="EXPECT_EQ(val1,val2)" value=""/>
+  <define name="ASSERT_NE(val1,val2)" value=""/>
+  <define name="EXPECT_NE(val1,val2)" value=""/>
+  <define name="ASSERT_LT(val1,val2)" value=""/>
+  <define name="EXPECT_LT(val1,val2)" value=""/>
+  <define name="ASSERT_LE(val1,val2)" value=""/>
+  <define name="EXPECT_LE(val1,val2)" value=""/>
+  <define name="ASSERT_GT(val1,val2)" value=""/>
+  <define name="EXPECT_GT(val1,val2)" value=""/>
+  <define name="ASSERT_GE(val1,val2)" value=""/>
+  <define name="EXPECT_GE(val1,val2)" value=""/>
+  <define name="ASSERT_STREQ(str1,str2)" value=""/>
+  <define name="EXPECT_STREQ(str1,str2)" value=""/>
+  <define name="ASSERT_STRNE(str1,str2)" value=""/>
+  <define name="EXPECT_STRNE(str1,str2)" value=""/>
+  <define name="ASSERT_STRCASEEQ(str1,str2)" value=""/>
+  <define name="EXPECT_STRCASEEQ(str1,str2)" value=""/>
+  <define name="ASSERT_STRCASENE(str1,str2)" value=""/>
+  <define name="EXPECT_STRCASENE(str1,str2)" value=""/>
   <define name="TEST(A,B)" value="void __ ## A ## _ ## B ( )"/>
   <define name="TEST_F(A,B)" value="void __ ## A ## _ ## B ( )"/>
   <define name="TEST_P(A,B)" value="void __ ## A ## _ ## B ( )"/>
diff --git a/cfg/python.cfg b/cfg/python.cfg
index f06e44639..7daa52d11 100644
--- a/cfg/python.cfg
+++ b/cfg/python.cfg
@@ -108,6 +108,7 @@
     <returnValue type="PyObject *"/>
     <noreturn>false</noreturn>
     <leak-ignore/>
+    <use-retval/>
     <arg nr="1">
       <not-uninit/>
       <formatstr/>
@@ -130,6 +131,21 @@
     </arg>
     <arg nr="3"/>
   </function>
+  <function name="PyArg_VaParse">
+    <returnValue type="int"/>
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- int PyInt_Check(PyObject *o) -->
   <function name="PyInt_Check">
     <returnValue type="int"/>
diff --git a/cfg/ruby.cfg b/cfg/ruby.cfg
index 6c9ead349..67dd19522 100644
--- a/cfg/ruby.cfg
+++ b/cfg/ruby.cfg
@@ -34,6 +34,21 @@
       <not-uninit/>
     </arg>
   </function>
+  <function name="rb_intern">
+    <leak-ignore/>
+    <noreturn>false</noreturn>
+    <returnValue type="ID"/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
+  <function name="rb_str_new2">
+    <leak-ignore/>
+    <noreturn>false</noreturn>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+  </function>
   <!-- void rb_raise(rb_eRuntimeError, const char *fmt, …)  -->
   <function name="rb_raise">
     <leak-ignore/>
@@ -50,4 +65,5 @@
       <not-uninit/>
     </arg>
   </function>
+  <podtype name="ID"/>
 </def>