We can require cl-lib, and then use cl-sort.
1 files changed, 1 insertions(+), 1 deletions(-)

M minesweeper.el
M minesweeper.el +1 -1
@@ 48,7 48,7 @@ 
 
 ;;; Code:
 
-(require 'cl)
+(require 'cl-lib)
 
 (define-derived-mode minesweeper-mode special-mode "minesweeper-mode"
   (define-key minesweeper-mode-map (kbd "SPC") 'minesweeper-choose)