owenpan added a comment. In D134853#3829433 <https://reviews.llvm.org/D134853#3829433>, @rymiel wrote:
> So, after some investigation, it turns out the clang lexer only combines an > underscore-less UDL to a single `string_literal` token if it's a valid > standard library UDL (in the given standard library version) And only if there are no spaces between `""` and the identifier. Otherwise, it's invalid. See https://en.cppreference.com/w/cpp/language/user_literal. > Which means only single-token `string_literal`s should be considered We don't want to merge e.g. `"" _foo` or `"" if` into a single token `""_foo` or `""if`. With the former, the user may want clang-format to keep the space. With the latter, I'm not sure if it's ok for clang-format to fix the syntax error. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D134853/new/ https://reviews.llvm.org/D134853 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
