Re: Suggestion for C-h f, describe-function

[Richard Stallman]

    Would be usable except that setting it up stops the tracking of
    further load-path changes, and it requires converting _all_
    corresponding directories in the current load-path to their respective
    source directory.

Do you actually change load-path during your editing session?  If so,
why?  If not, wouldn't it be fine to set find-function-source-path
once in .emacs?