Comment 25 for bug 679917

> On Unix, if you open a file, and then rename (or delete) the file,
> it will remain linked to the file you originally opened.

Are you sure that you can delete a file during you are working on it in an other program? This does definitely not work on windows, as I wrote already.

It seems you are mixing 2 issues/features: One is auto save to prevent data loss when hugin crashes. The second one is to provide a history or backup function.

The patch implements an autosave, because only the last project is saved. (Even if you are working on different projects in one session, only the last one is finally kept on disc. The older autosaves are overwritten.) But it needs more fixing, currently the patch does not work with 2 instances. Also the time intervall is too short. It saves every 10 seconds, which create too much disc activity for me. This is too short and can not changed by the user (or even deactivated).

Your proposed name schemes in the comments are more dealing with history/backup.