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Juanma Barranquero authored
* play/tetris.el (tetris, tetris-update-speed-function) (tetris-tty-colors, tetris-x-colors, tetris-move-bottom) (tetris-move-left, tetris-move-right, tetris-rotate-prev) (tetris-rotate-next, tetris-end-game, tetris-start-game) (tetris-pause-game): Fix typos in docstrings. (tetris-mode-map, tetris-null-map): Move initialization into declaration. (tetris-mode): Define with `define-derived-mode'; set show-trailing-whitespace to nil. (tetris): Prefer window already displaying the "*Tetris*" buffer.
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