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

instance method

LocalJumpError#reason

local_jump_error.reason → symbol

static VALUE
localjump_reason(VALUE exc)
{
    return rb_iv_get(exc, "@reason");
}

The reason this block was terminated: :break, :redo, :retry, :next, :return, or :noreason.

See also #exit_value also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0