[clang] Add 'enum_select' diagnostic selection to clang. (PR #122505)

[Aaron Ballman via cfe-commits]

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@@ -886,6 +909,11 @@ struct DiagTextDocPrinter : DiagTextVisitor<DiagTextDocPrinter> {
       makeRowSeparator(RST[I]);
   }
 
+  void VisitEnumSelect(EnumSelectPiece *P) {
+    // For now, document this as if it were a 'select'.
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AaronBallman wrote:

I think that makes sense -- let's drop the "for now" in the comment and just explain that in terms of documentation, there's no difference between select and enum_select.

https://github.com/llvm/llvm-project/pull/122505