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Stefan Monnier authored
* lisp/emacs-lisp/byte-opt.el (byte-optimize-zerop): Remove. * src/data.c (Fzerop): Move to Elisp. (syms_of_data): Don't defsubr it. * src/keyboard.c (echo_keystrokes_p): New function. (read_char, record_menu_key, read_key_sequence): Use it. Fixes: debbugs:17475
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