In Vim I can :set wrapscan so that when I do an incremental search, the cursor jumps to the first match whether the first match is above or below the cursor.
In Emacs, if I start a search via C-s, the search fails saying Failing I-search if the first match is above the cursor. If I hit C-s again it then wraps the search, saying Wrapped I-search. How do I wrap and jump the cursor by default as in Vim, without having to C-s a second time?
The easiest way to do this is to use the following defadvice:
(defadvice isearch-repeat (after isearch-no-fail activate)
(unless isearch-success
(ad-disable-advice 'isearch-repeat 'after 'isearch-no-fail)
(ad-activate 'isearch-repeat)
(isearch-repeat (if isearch-forward 'forward))
(ad-enable-advice 'isearch-repeat 'after 'isearch-no-fail)
(ad-activate 'isearch-repeat)))
When Isearch fails, it immediately tries again with wrapping. Note that it is important to temporarily disable this defadvice to prevent an infinite loop when there are no matches.