Documentation bug for isearch?

[Matthieu Lemerre]

Hello,

I use Emacs for more than 7 year and I just found out that C-s sets
the mark automatically when you start an isearch. The problem with
Emacs is that it's so long to use it optimally, that you get used to
bad automatisms :)

This fact is not written in the documentation string for
isearch-forward; there is a hint "Mark saved where search started",
but I tend not to see them using emacs in full-screen;

I think I would have found it earlier if I could have read it in the
doc string of isearch; my suggestion is to put it in the doc string.

Thanks,

Matthieu