RE: RFC: [PATCH] isearch enhancements: symbol mode; syntactic filtering

[Drew Adams]

> While we are thinking about this: I think sometimes it would be good
> to search only visible text. (Especially in org-mode.)

I thought Juri already mentioned that as one of the filtering possibilities.

Anyway, FWIW, in Isearch+, `C-+' toggles searching invisible text.  So yes, I
agree with you.  Trivial to do, and useful IMO.

(defun isearchp-toggle-invisible ()
  "Toggle `search-invisible'."
  (interactive)
  (when search-invisible
   (setq isearchp-last-non-nil-invisible  search-invisible))
  (setq search-invisible
        (if search-invisible nil isearchp-last-non-nil-invisible))
  (if search-invisible
      (message "Searching invisible text is now ON")
    (message "Searching invisible text is now OFF")))

http://www.emacswiki.org/emacs/download/isearch%2b.el