[clang] [clang-format] Add new option: WrapNamespaceBodyWithNewlines (PR #106145)

[Björn Schäpers via cfe-commits]

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@@ -32,6 +32,24 @@ bool isRecordLBrace(const FormatToken &Tok) {
                      TT_StructLBrace, TT_UnionLBrace);
 }
 
+bool LineStartsNamespaceScope(const AnnotatedLine* Line,
+                              const AnnotatedLine* PreviousLine,
+                              const AnnotatedLine* PrevPrevLine) {
+  return PreviousLine && PreviousLine->Last->is(tok::l_brace) &&
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HazardyKnusperkeks wrote:

The existence of `PrevPrevLine` suggest that `PreviousLine` has to exist. Just assert on that.

https://github.com/llvm/llvm-project/pull/106145