How to Override Backup Control to Implement File Versioning?

Hi, I've read through the manual and checked out the FAQ, but I can't see how to implement file versioning in Vim. What I'd like to do is mimic the VMS file versioning feature wherein if you edit a file (say, file.txt) , the original is saved as file.txt.1. Subsequent backups of the same file

How to Override Backup Control to Implement File Versioning?

Hi, I've read through the manual and checked out the FAQ, but I can't see how to implement file versioning in Vim. What I'd like to do is mimic the VMS file versioning feature wherein if you edit a file (say, file.txt) , the original is saved as file.txt.1. Subsequent backups of the same file