Remove M-S-<backspace> binding: too close to C-M-<backspace>.
;(define-key global-map [delete] 'backward-delete-char)
;; natural bindings for terminal keycaps --- defined in X keysym order
-(define-key global-map [M-S-backspace] 'kill-whole-line)
+(define-key global-map [C-S-backspace] 'kill-whole-line)
(define-key global-map [home] 'beginning-of-line)
(define-key global-map [C-home] 'beginning-of-buffer)
(define-key global-map [M-home] 'beginning-of-buffer-other-window)