[clang] [clang-format] Recognize TableGen paste operator on separate line (PR #133722)

[Owen Pan via cfe-commits]

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@@ -2832,6 +2832,23 @@ TEST_F(TokenAnnotatorTest, UnderstandTableGenTokens) {
   Tokens = Annotate("!cond");
   EXPECT_TOKEN(Tokens[0], tok::identifier, TT_TableGenCondOperator);
 
+  // The paste operator should not be treated as a preprocessor directive even
+  // if it is on a separate line.
+  Tokens = Annotate("def x\n"
+                    "#embed {}");
+  ASSERT_EQ(Tokens.size(), 7u) << Tokens;
+  EXPECT_TOKEN(Tokens[1], tok::identifier, TT_StartOfName);
+  EXPECT_TOKEN(Tokens[2], tok::hash, TT_Unknown);
+  EXPECT_EQ(Tokens[1]->Next, Tokens[2]);
+  Tokens = Annotate("def x\n"
+                    "#define x\n"
+                    "#embed {}");
+  ASSERT_EQ(Tokens.size(), 10u) << Tokens;
+  EXPECT_TOKEN(Tokens[1], tok::identifier, TT_StartOfName);
+  EXPECT_TOKEN(Tokens[2], tok::hash, TT_Unknown);
+  EXPECT_TOKEN(Tokens[5], tok::hash, TT_Unknown);
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owenca wrote:

Delete both lines?

https://github.com/llvm/llvm-project/pull/133722