[clang-tools-extra] [clang-tidy] Extend `performance-prefer-single-char-overloads` to handle ternary operator arguments (PR #187069)

[Yanzuo Liu via cfe-commits]

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@@ -55,8 +61,7 @@ void FasterStringFindCheck::storeOptions(ClangTidyOptions::OptionMap &Opts) {
 }
 
 void FasterStringFindCheck::registerMatchers(MatchFinder *Finder) {
-  const auto SingleChar =
-      ignoringParenCasts(stringLiteral(hasSize(1)).bind("literal"));
+  const auto SingleChar = expr().bind("literal");
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zwuis wrote:

+1 on making it a custom matcher.

https://github.com/llvm/llvm-project/pull/187069