Index: clang-tools-extra/trunk/clangd/ClangdUnit.cpp
===================================================================
--- clang-tools-extra/trunk/clangd/ClangdUnit.cpp
+++ clang-tools-extra/trunk/clangd/ClangdUnit.cpp
@@ -265,6 +265,8 @@
   llvm::Optional<tidy::ClangTidyContext> CTContext;
   {
     trace::Span Tracer("ClangTidyInit");
+    vlog("ClangTidy configuration for file {0}: {1}", MainInput.getFile(),
+         tidy::configurationAsText(ClangTidyOpts));
     tidy::ClangTidyCheckFactories CTFactories;
     for (const auto &E : tidy::ClangTidyModuleRegistry::entries())
       E.instantiate()->addCheckFactories(CTFactories);