Here are some examples that are not demangled by
std.demangle.demangle :
_D13libd_demangle12__ModuleInfoZ
_D15TypeInfo_Struct6__vtblZ
_D3std5stdio12__ModuleInfoZ
_D3std6traits15__T8DemangleTkZ8Demangle6__initZ
_D47TypeInfo_S3std6traits15__T8DemangleTkZ8Demangle6__initZ
demangle is currently designed to demangle functions names,
while the strings above are types. During parsing, demangle
sees the string as a qualified name and then expects a type,
and when it doesn't find one it figures the symbol isn't valid.
It sounds like we either need a separate function for
demangling types or if the demangle function encounters a 'Z'
when it expects a type name it should realize it's demangling a
type name, back up, and try again according to that logic.
OK, so as a practical matter, I'd like to be able to demangle
these types that appear as symbols in object &c. files. Is there
a simple way I can modify a mangled type such as
_D47TypeInfo_S3std6traits15__T8DemangleTkZ8Demangle6__initZ
into a mangled qualified name so it can be demangled by the
existing demangle function and the result then modified into a
string representing a type?