emerge-quit-hook is a variable defined in `emerge.el'.
Its value is
nil
Automatically becomes permanently buffer-local when set.
This variable may be risky if used as a file-local variable.
Documentation:
Hooks to run in the merge buffer after the merge has been finished.
`emerge-prefix-argument' will hold the prefix argument of the `emerge-quit'
command.
This is *not* a user option, since Emerge uses it for its own processing.