End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

class method

Readline.vi_editing_mode

Readline.vi_editing_mode → nil

ext/readline/readline.c View on GitHub ↗

static VALUE
readline_s_vi_editing_mode(VALUE self)
{
    rl_vi_editing_mode(1,0);
    return Qnil;
}

Specifies VI editing mode. See the manual of GNU Readline for details of VI editing mode.

Raises NotImplementedError if the using readline library does not support.

See also .vi_editing_mode? .special_prefixes= .special_prefixes also in 3.2 · 3.0