Remove comments in macro invocations

Just breaks to much.

src/libclang/preprocessor.cpp

@@ -36,9 +36,9 @@ namespace
         // -x c++: force C++ as input language
         // -I.: add current working directory to include search path
         // -E: print preprocessor output
-        // -CC: keep comments, even in macro
+        // -C: keep comments
         // -dD: print macro definitions as well
-        auto flags = std::string("-x c++ -I. -E -CC -dD");
+        auto flags = std::string("-x c++ -I. -E -C -dD");
         if (detail::libclang_compile_config_access::clang_version(c) >= 40000)
             // -Xclang -dI: print include directives as well (clang >= 4.0.0)
             flags += " -Xclang -dI";
@@ -735,7 +735,7 @@ detail::preprocessor_output detail::preprocess(const libclang_compile_config& co
             {
             case linemarker::line_directive:
                 break; // ignore
-            // no need to handle it, preprocessed output doesn't need to match line numbers precisely
+                // no need to handle it, preprocessed output doesn't need to match line numbers precisely
 
             case linemarker::enter_new:
                 if (file_depth == 0u && lm.value().file.front() != '<')

test/cpp_preprocessor.cpp

@@ -173,23 +173,20 @@ f **/
 #define g(name) \
 class name \
 { \
-    /** i
-        i */ \
-    void i(); \
 };
 
 /// h
 /// h
 g(h)
 
-/// j
+/// i
-/// j
+/// i
-using j = int;
+using i = int;
 
-/// k
+/// j
-/// k
+/// j
 template <typename T/**/>
-void k();
+void j();
 )";
 
     auto file = parse({}, "comment-matching.cpp", code);