allow-void-return-safe as_cpp-for-enums as_cpp_int_LGLSXP avoid-cpp-unwind-protect banch1 branch2 bugfix/macro-typo clang-format-always const-operator-star construction-of-logicals conversion_traits decay-in-wrapping disallow_smart_ptr enable_if-traits enable_if_is_SEXP enum_char explicit_is_constructible_from_sexp header-guard jeroen-patch-1 linker-error-workaround list_iterator_star logicals_proxy_operator_equal_bool master no_using_namespace_cpp11 pak-CI parameter-pack-to-tuple-for-gcc4.8 patch-1 preserved-list-refactor r_bool remove-unwind_protect_sexp ricfitz/quiet-register richfitz/no-trailing-semicolon rstring_char_array stop_no_return support-any-return-in-unwind_protect use-preserve-xptr verify-gcc4.8-in-CI win-oldrel