Flush the input buffer when we leave input mode but found nothing

[fangpenlin]

When you type something like this

:)

and press ESC or enter, it would be nice to flush the input buffer instead of reset it

[fangpenlin]

Thought about this feature, ESC is for cancelOperation command, and it usually means user wanting to cancel the operation literally, so I think it's better to drop the input buffer.

Instead, when you press Enter, that means you want to submit it. So I change the key to Enter instead.

/cc @lg

[lg]

hm. i'm pressing ESC to close the dialog and keep the ":)" that i already typed. i think ESC would make sense here. what about both ESC an Enter?

[fangpenlin]

@lg yo, problem fixed 😎

[lg]

:) :) :)