How would I undo or edit the last line of a multi-line query in mysql?

I often make mistakes when entering multi-line queries in mysql. Is there an easier way to undo the last line instead of retyping the entire query?

mysql> SELECT age, name
    -> FROM people
    -> WHERE age > 20
    ->

For example, I meant to type age < 20, is there a way to quicky fix that? Normally I would ctrl + C and use the up arrow key to re-enter first two lines quickly, but I feel like there should be an easier way.

I tried reading documentation and read some forums but I couldn't find anything. It should be a new feature if it doesn't exist.

Type edit.

mysql> edit

It would open a vi editor. You can make any number of mistakes and undo them.
Once done with your multiline query, exit(:wq) out the editor.
Type ; to execute your query.

mysql> ;

StackExchange Database Administrators Q#232764, answer score: 2