The command whose name is written in this script shall die

This note will not take effect unless the writer has the command’s face in their mind when writing his/her name.

If the cause of death is written within the next 40 seconds of writing the command’s name, it will happen. If not specified, split will simply die of a heart attack

mmmh... could I suggest that simply ignore the lines with "|", or maybe emit a warning (or warn)?

TOGETHER WE CAN SAVE A LIFE!, (or at least several hours of strained compilation)