From a bug report, receiving the
message "Your body rises from the dead as an <undead>..." gives away
the fact that bones are being created (and its absence when applicable
undead kills the hero gives away the fact that bones aren't being
created). Not very interesting for single player installations where
5-10 seconds later the player is going to check the playground for new
files, but matters on multi-user installations where players don't have
access to the directory and sometimes race each other to juicy bones,
such as nethack.alt.org.
At the end of disclosure, give the message whether bones are being
saved or not (for cases where it would have happened when bones are
created). Player won't know whether new bones are becoming available.
Also, prevent risen undead-from-hero from being given random monster
inventory, but explicitly give mummy-from-hero a mummy wrapping if the
hero isn't already carrying one. It will end up being worn; that's
the only armor mummies are allowed to put on.