add a new handle sudden.rb

＿人人人人人人＿
＞　sudden.rb　＜
￣ＹＹＹＹＹＹ￣
突然の〜に反応するようにしてみました。
Line is too long. [110/80]<br>Surrounding space missing for operator '*'.<br>Surrounding space missing for operator '/'.<br>Surrounding space missing for operator '+'.<br>Prefer double-quoted strings unless you need single quotes to avoid extra backslashes for escaping.