[clang-tools-extra] [clang-doc] Flatten repeated @return and @brief comment arrays (PR #188739)

[Paul Kirth via cfe-commits]

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@@ -150,11 +153,26 @@ static void insertComment(Object &Description, json::Value &Comment,
   auto DescriptionIt = Description.find(Key);
 
   if (DescriptionIt == Description.end()) {
-    auto CommentsArray = json::Array();
-    CommentsArray.push_back(Comment);
-    Description[Key] = std::move(CommentsArray);
+    // For FlattenArray mode, if Comment is an array, use it directly
+    if (FlattenArray && Comment.getAsArray()) {
+      Description[Key] = Comment;
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ilovepi wrote:

doesn't this overwrite the exiting comments if the array was already there...

https://github.com/llvm/llvm-project/pull/188739