[clang-tools-extra] feat: highlight for import, export keyword of CXX Module (PR #204511)

[Aleksandr Platonov via cfe-commits]

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@@ -1123,6 +1123,18 @@ sizeof...($TemplateParameter[[Elements]]);
   )cpp"}},
                      ~ScopeModifierMask);
 
+  checkHighlightings(R"cpp(
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ArcsinX wrote:

> I want to, but checkHighlightings cannot import the module.. so I do not know how to test
> 
> in order to make it compile with
> 
> import ABC;
> I need to make clang++ also compile imp.cxx and use the module, but I do not know how to do

Can we use "import std;"? If it's not possible, maybe we can add a lit test to test this

https://github.com/llvm/llvm-project/pull/204511