junos config commit question

On an EX4300 switch running JunOS 14.1 let's imagine I typed config delete interfaces before coming to my senses. How am I supposed to back out of that mess? For the life of me, after a week of reading the 3000 page reference manual, and endless DuckDuckGoing, I cannot see a simple way of just abandoning the commit. I've got to be missing something stunningly obvious here because it's unthinkable that this functionality doesn't exist. Help?!? The only way out I can see is to drop into the shell, make an uncompressed copy of juniper.conf.gz, then pop back into the config editor and load that over top of the editor's config view. Surely there's a saner way of dealing with this. --lyndon