[clang] [clang-format] Break trailing comment alignment at non-trailing comments (PR #208324)

[via cfe-commits]

================
@@ -3007,6 +3007,130 @@ TEST_F(FormatTestComments, AlignTrailingCommentsAcrossEmptyLines) {
                Style);
 }
 
+TEST_F(FormatTestComments, NonTrailingCommentBreaksAlignment) {
+  // Regression test for https://llvm.org/PR208266
+  FormatStyle Style = getGoogleStyle(FormatStyle::LK_Proto);
+  Style.AlignConsecutiveAssignments.Enabled = true;
+  Style.AlignTrailingComments.Kind = FormatStyle::TCAS_Always;
+  Style.AlignTrailingComments.OverEmptyLines = 4;
+  Style.ColumnLimit = 0;
+
+  verifyNoChange("enum E {\n"
+                 "  A = 0; /* e */\n"
+                 "}\n"
+                 "/* c */\n"
+                 "message M {\n"
+                 "  int32 a    = 1; /* f */\n"
+                 "  int32 abcd = 2; /* g */\n"
+                 "}",
+                 Style);
+
+  Style = getLLVMStyle();
+  Style.AlignConsecutiveAssignments.Enabled = true;
+  Style.AlignTrailingComments.Kind = FormatStyle::TCAS_Always;
+  Style.AlignTrailingComments.OverEmptyLines = 4;
+  Style.ColumnLimit = 0;
----------------
owenca wrote:

```suggestion
  auto Style = getLLVMStyle();
  EXPECT_EQ(Style.AlignTrailingComments.Kind, FormatStyle::TCAS_Always);
  Style.AlignTrailingComments.OverEmptyLines = 2;
```

https://github.com/llvm/llvm-project/pull/208324