(_POSIX_VDISABLE): Remove unnecessary cast.
(struct control_info, visible): Use cc_t for control chars.
(struct control_info): Use size_t for sizes.
(recover_mode, set_mode, display_speed, display_window_size,
valid_options, main, display_changed):
Use bool for booleans.
(integer_arg): Return unsigned long int, not long int.
Accept new max arg; all callers changed, to specify a maximum
value for integer parameters instead of silently overflowing.
(wrap): Do not overrun the stack buffer if the output contains
more than 1024 bytes. Instead, malloc a buffer.
(main): Remove a "what is this?!?" FIXME. Nobody knows what it is.
Remove unnecessary casts.
(set_control_char): Allow int values only up to cc_t range.
(screen_columns): Don't reject INT_MAX.
(display_changed, display_all, display_speed, recover_mode):
Don't assume cc_t fits in int.
Paul Eggert
cee6afd01e