[clang] [clang-format] Added unittest of TableGen formatting w.r.t. block type calculation. (PR #87924)

[Hirofumi Nakamura via cfe-commits]

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@@ -290,6 +290,16 @@ TEST_F(FormatTestTableGen, MultiClass) {
                "}\n");
 }
 
+TEST_F(FormatTestTableGen, MultiClassesWithPasteOperator) {
+  // This is a sensitive example for the handling of the paste operators in
+  // brace type calculation.
+  verifyFormat("multiclass MultiClass1<int i> {\n"
+               "  def : Def#x<i>;\n"
+               "  def : Def#y<i>;\n"
+               "}\n"
+               "multiclass MultiClass2<int i> { def : Def#x<i>; }\n");
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hnakamura5 wrote:

I come to notice that they are not required. I will make a patch for whole this file later.

https://github.com/llvm/llvm-project/pull/87924