🚀 go-pugleaf

roland@ai.mit.edu (Roland McGrath) suggests the following code as a
way to have certain actions taken when a search fails:

>   (if (re-search-forward "String" nil t)
>       ;; Search matched.
>       (...)
>      ;; Search failed.
>      ...)

This isn't quite how I'd do it, and there is another point to make.  

(if (re-search-forward "string" search-limit t)
   (do-this-on-match)
 (do-this-on-failure))

Search-limit is a point.  If you want the search to examine the entire
file, then search-limit should be (point-max). 

In this version, do-this-on-match will commence with the point at the
end of the match, but do-this-on-failure will commence with the point
where it was when the search began.  If you want do-this-on-failure to
commence at search-limit, then you would write:

(if (re-search-forward "string" search-limit 'AnythingOtherThanNilorT)
   (do-this-on-match)
 (do-this-on-failure))
-- 

------------------------------------------------------------------------------
Joshua Mittleman (mittle@ibm.com or joshua@paul.rutgers.edu)
J2-C28 T.J. Watson Research Institute, PO Box 704, Yorktown Heights, NY  10598