[clang-tools-extra] Add support for renaming objc methods, even those with multiple selector pieces (PR #76466)

[kadir çetinkaya via cfe-commits]

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@@ -569,8 +571,43 @@ renameWithinFile(ParsedAST &AST, const NamedDecl &RenameDecl,
     //   }
     if (!isInsideMainFile(RenameLoc, SM))
       continue;
+    Locs.push_back(RenameLoc);
+  }
+  if (const auto *MD = dyn_cast<ObjCMethodDecl>(&RenameDecl)) {
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kadircet wrote:

let's extract this branch into a separate function?

https://github.com/llvm/llvm-project/pull/76466