andreascreten/wp-cli — comment on commit 0a3b579c14407fa75d8a41230d06f361c5b65cfc
File: src/php/wp-cli/class-wp-cli.php line 47
By willmot:

It would be nice if the exit we're optional for situations where you want to fire an error but continue.

For example, in our wpunit wp-cli command (wp test) we fire an error on a test failure, in that instance we don't want to stop the script.