RE: isearch region or thing at point.

[Drew Adams]

It's not about Isearch+.  It's about `M-w' in Isearch.

This is all there is to `isearchp-kill-ring-save'.  I think this (or similar) 
is what vanilla Isearch should bind to `M-w' (renaming to 
`isearch-kill-ring-save', for example).

(defun isearchp-kill-ring-save ()
  "Copy the current search string to the kill ring."
  (interactive)
  (kill-new isearch-string)
  (let ((message-log-max  nil))
    (message "Copied search string as kill"))
  (sit-for 1)
  (isearch-update))