Under MSVC regex objects are multiline by default and there is no apparant way of changing this behaviour. Under clang/gcc regex is singleline unless std::regeX_constants::multiline is specificied.
This behaviour is assumed in Gen-ZAM.cc when auto-generating header files.
Example: https://godbolt.org/z/aP59x3EhT
1491335: AUTO_CAUSES_COPY due to a for loop using auto& instead of const auto&
1491338: AUTO_CAUSES_COPY due to a for loop using auto& instead of const auto&
