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

[David Goldman via cfe-commits]

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@@ -508,24 +513,46 @@ static bool mayBeValidIdentifier(llvm::StringRef Ident) {
       !isAsciiIdentifierStart(Ident.front(), AllowDollar))
     return false;
   for (char C : Ident) {
+    if (AllowColon && C == ':')
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DavidGoldman wrote:

This doesn't check the entire selector - only a fragment, so I don't think there's a need to check spaces here. AFAIK selectors can have an empty first fragment too - any idea where that restriction is from?

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