user5@system:/etc/apt$ sudo dpkg -P emacs24
dpkg: dependency problems prevent removal of emacs24:
 emacs depends on emacs24 | emacs24-lucid | emacs24-nox; however:
  Package emacs24 is to be removed.
  Package emacs24-lucid is not installed.
  Package emacs24-nox is not installed.

dpkg: error processing package emacs24 (--purge):
 dependency problems - not removing
Errors were encountered while processing:
 emacs24