Backup Custom Template?

If you turn on local editing through the 'Edit template locally' link on the sidebar of the template editor, you'll get a folder full of template files which should be easy to backup. Does that help?

Yea, learned this the hard way. No backup of my template customizations 😞

It's not possible right now beyond turning on local editing and copying the files. However, I plan to use git to store revisions to custom templates, making it possible to undo, etc. Once this is deployed versioning, backups, etc will be much easier