diff --git a/clang-tools-extra/clangd/ClangdServer.cpp b/clang-tools-extra/clangd/ClangdServer.cpp
--- a/clang-tools-extra/clangd/ClangdServer.cpp
+++ b/clang-tools-extra/clangd/ClangdServer.cpp
@@ -637,8 +637,8 @@
       Effect = T.takeError();
     }
     assert(Effect.hasValue() && "Expected at least one selection");
-    if (*Effect) {
-      // Tweaks don't apply clang-format, do that centrally here.
+    if (*Effect && (*Effect)->FormatEdits) {
+      // Format tweaks that require it centrally here.
       for (auto &It : (*Effect)->ApplyEdits) {
         Edit &E = It.second;
         format::FormatStyle Style =
diff --git a/clang-tools-extra/clangd/refactor/Tweak.h b/clang-tools-extra/clangd/refactor/Tweak.h
--- a/clang-tools-extra/clangd/refactor/Tweak.h
+++ b/clang-tools-extra/clangd/refactor/Tweak.h
@@ -78,6 +78,9 @@
     /// A message to be displayed to the user.
     llvm::Optional<std::string> ShowMessage;
     FileEdits ApplyEdits;
+    /// Whether the edits should be formatted before presenting to the client.
+    /// Note that it applies to all files.
+    bool FormatEdits = true;
 
     static Effect showMessage(StringRef S) {
       Effect E;