please find my latest diffs attached. contains various goodies and it also contains the proposed new repl behaviour with which i'm satisfied now.

2006-11-01  Attila Lendvai  < attila.lendvai@gmail.com>
   
    * slime.el (sldb-sexp-highlight-mode): New custom.
    (slime-handle-repl-shortcut): Trigger slime-lookup-shortcut when
    the point is anywhere before slime-repl-input-start-mark.  IOW,
    you can press "," anywhere before the prompt.
    (slime-edit-definition): Handle the case when there are only such
    entries returned from swank that have errors.
    (slime-read-from-minibuffer): Allow overriding of the keymap.
    (slime-repl-previous-matching-input): Similar behaviour like
    isearch-forward.
    (slime-repl-next-matching-input): Ditto. In more details: You can
    freely navigate with slime-repl-previous/next-input with M-p and
    M-n at any time among the history entries.  When M-r is pressed,
    which invokes slime-repl-previous-matching-input, the the
    minibuffer is activated to read the regexp to search for and the
    contents will default to the current repl input.  Pressing M-r
    again will start searching with the last pattern used no matter
    what the content of the minibuffer is. Subsequent invocations of
    M-r get the next match, and of course the same applies for M-s,
    which is slime-repl-previous-matching-input.

    * swank.lisp (fuzzy-completion-set): Fix on clisp.
    (convert-fuzzy-completion-result): Fix symbol fbound
    and other annotations.
    (slot-value-using-class-for-inspector): New.
    (slot-boundp-using-class-for-inspector): New.
    (inspect-for-emacs): Use the special slot access methods
    so that it's possible to customize the inspecting of
    complex slots (e.g. computed-class at
    http://common-lisp.net/project/computed-class/).
    (all-slots-for-inspector): Converted to generic method.