Re: query-replace-interactive not documented

[Richard Stallman]

    `query-replace-interactive' is not a user option.  It is defined using
    defvar in replace.el.  Its docstring does not start with a `*' either.
    Of course, we can not document every single defvar either.

    Should it be a defcustom?

Yes.

      Is it something one would want to set
    permanently to t?

Some people might.