[clang] [clang-format] Allow open brace with trailing comment (no line break) (PR #89956)

[via cfe-commits]

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@@ -1429,6 +1429,37 @@ TEST_F(FormatTestComments, CommentsInStaticInitializers) {
                "    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
                "    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // comment\n"
                "    0x00, 0x00, 0x00, 0x00};            // comment");
+
+  // The usual 'open brace with trailing comment' behaviour is to forcibly
+  // break the trailing comment onto onto a new line -
+  FormatStyle Style = getLLVMStyle();
+  Style.AlignAfterOpenBracket = FormatStyle::BAS_BlockIndent;
+  StringRef Input = "int a[2][2] = {\n"
+                    "    { // a\n"
+                    "        0, // x\n"
+                    "        1,\n"
+                    "    },\n"
+                    "    {\n"
+                    "        2,\n"
+                    "        3, // y\n"
+                    "    }\n"
+                    "};";
+  verifyFormat("int a[2][2] = {\n"
+               "    {\n"
+               "        // a\n"
+               "        0, // x\n"
+               "        1,\n"
+               "    },\n"
+               "    {\n"
+               "        2,\n"
+               "        3, // y\n"
+               "    }\n"
+               "};",
+               Input, Style);
+  // But, especially for nested, multi-dimensional initialization, allowing
+  // open braces with trailing comments can be desirable -
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mydeveloperday wrote:

extraneous - normally we end with a period (.)

https://github.com/llvm/llvm-project/pull/89956