Dig straight down like an idiot

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Dig straight down like an idiot or DSDLAI is just Dig but you have 20% to 90% chance per program to fall into lava when using the dig command. Idiot.

Example

Hello, world!

>$H:e:l:l:$o:%:W:o:$r:l:d:!:@
 8        8  0     8

Side effect: 20% to 90% chance to cause an error because the digger is melted and vaporized.

Implementations

A Python interpreter by User:Bangyen.