UnDecorateName is still a stub, while our winedump has some a good framework for UnDecorateName, also translating into a GCC way and not in a VC++ way. How should these things go together?
See the comment in dbghelp.c !! My first thouhgt would be to make a .a lib out of winedump code, and use it in winedump and msvcrt and / or dbghelp. I haven't studied yet the best way to share the code between msvcrt and dbghelp A+