Use the first created cursor

mc-mark-more.el

@@ -396,7 +396,7 @@ With zero ARG, skip the last one and mark next."
         (while (search-forward search end t)
           (push-mark (match-beginning 0))
           (mc/create-fake-cursor-at-point))
-        (let ((first (mc/furthest-cursor-before-point)))
+        (let ((first (car (last (mc/all-fake-cursors)))))
           (if (not first)
               (error "Search failed for %S" search)
             (mc/pop-state-from-overlay first)))
@@ -704,30 +704,6 @@ already there."
   (save-excursion
     (not (null (sgml-get-context)))))
 
-(defun mc/split-region (beg end search)
-  "Split region each time SEARCH occurs in the buffer.
-
-This can be thought of as an inverse to `mc/mark-all-in-region'."
-  (interactive "r\nsSplit on: ")
-  (let ((case-fold-search nil))
-    (if (string= search "")
-        (user-error "Empty search term")
-      (progn
-        (mc/remove-fake-cursors)
-        (goto-char beg)
-        (push-mark beg)
-        (while (search-forward search end t)
-          (save-excursion
-            (goto-char (match-beginning 0))
-            (mc/create-fake-cursor-at-point))
-          (push-mark (match-end 0)))
-        (unless (= (point) end)
-          (goto-char end))
-        (mc/create-fake-cursor-at-point)
-        (if (> (mc/num-cursors) 1)
-            (multiple-cursors-mode 1)
-          (multiple-cursors-mode 0))))))
-
 (provide 'mc-mark-more)
 
 ;;; mc-mark-more.el ends here