Here is the next version of savehist, after no less than eight years.
New features:
- autosaving of histories
- reliable handling of non-printable items in variables
- attempt to use a re-readable coding system under Mule (minibuffer
histories can easily contain characters other than those handlable
by the user's language environment), with the possibility of
affecting the coding system used.
Please let me know if it works for you.