On win32 we use lit's executeBuiltinEcho to implement the echo command and this version only currently supports flags that are separate. llvm-svn: 333495
This should address some of the assert failures the fuzzer has been finding such as: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=6719 Differential Revision: https://reviews.llvm.org/D47086 llvm-svn: 333459