Hi,

TL;DR: the patch being trivial, maybe it's quicker to just skip to that.

Samuel Wales (X-Debbugs-CC'd) reported a problem with a recipe :
http://lists.gnu.org/archive/html/emacs-orgmode/2014-11/msg00795.html

For the record, here's the message:
> === call

> emacs -Q --geometry -0+0 --geometry 80x30 --eval '(setq load-path
> (append (list    (substitute-in-file-name "$delorgsrc/lisp")
> (substitute-in-file-name "$delorgsrc/contrib/lisp")) load-path))'
> bug-isearch.org

> ===

> here is the org file to use:

> === bug-isearch.org
> * NAKA lorem
> *** REF lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> lorem
> *** NAKA lorem
> ***** reproduce isearch bug
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf asdfasfdasdfasdfasdf
> search for lightly org
> ===

> all those asdf lines should be concatenated into a single line in case
> gmail corrupted it.
(Additionnal note : the "search for lightly org" should be on that line too.)

From there, hit C-s lightly org RET, then you your window should
consist of just the ellipsis, instead of showing the text you just
searched for.

IMO this recipe shows two problems :
- one is in isearch
- the other was reported as bug#18197 and I'm still not sure what to do
  with it.

For the first, I think the following trivial patch is a fix (if ok to
apply, should it be on the emacs-24 branch?),