[clang-tools-extra] [clang-tidy] Fix handling --driver-mode= (PR #66553)

[Julian Schmidt via cfe-commits]

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@@ -550,9 +555,91 @@ static llvm::IntrusiveRefCntPtr<vfs::OverlayFileSystem> createBaseFS() {
   return BaseFS;
 }
 
+static void recreateOptionsParserIfNeeded(
+    llvm::Expected<CommonOptionsParser> &OptionsParser,
+    llvm::ArrayRef<const char *> Args,
+    const ClangTidyOptions &EffectiveOptions) {
+
+  auto DoubleDashIt = std::find(Args.begin(), Args.end(), StringRef("--"));
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5chmidti wrote:

Use `llvm::find` and `const auto DoubleDashIt`

https://github.com/llvm/llvm-project/pull/66553