instance method
IO#echo=
(bool flag) -> bool
io.echo = flag
ext/io/console/console.c
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static VALUE
console_set_echo(VALUE io, VALUE f)
{
conmode t;
int fd = GetReadFD(io);
if (!getattr(fd, &t)) sys_fail(io);
if (RTEST(f))
set_echo(&t, NULL);
else
set_noecho(&t, NULL);
if (!setattr(fd, &t)) sys_fail(io);
return io;
}
Enables/disables echo back. On some platforms, all combinations of this flags and raw/cooked mode may not be valid.
You must require ‘io/console’ to use this method.