[Cin] Backup in CinGG

[Andrew Randrianasulu]

В сообщении от Wednesday 10 February 2021 23:07:23 Phyllis Smith via Cin написал(а):
> Does anyone have any objections to checking in the Autosave Backup code to
> GIT?  Does it seem to be safe enough?  I know Andrew had suggested to "test
> with caution" so is there any concern?  I have not encountered any
> anomalies in my tests and you know I always log in as root.

I was  concerned about, well plain bad copypasta on my side, or 
system time going back and forth during editing session ...

> 
> On Wed, Feb 10, 2021 at 1:51 AM Andrea paz via Cin <
> cin at lists.cinelerra-gg.org> wrote:
> 
> > I was thinking of adding a section in the manual about how backup
> > works in CinGG.
> > Please correct me if I am wrong:
> > if I don't enable the new option (default), a backup is created at
> > each editing action (see below the list of actions suggested by
> > Andràs) but this overwrites the previous backup.prev so in .bcast5
> > there will be only one backup file (plus backup.xml whose function I
> > don't understand). The same when we manually create a backup via File
> > --> save backup. When we make a File --> Load backup, in addition to
> > bring on the timeline the backup.prev we also create a new
> > backup.prev.
> >
> > If I enable "Autosaves continuous backups" the backup.prev file is not
> > overwritten, but a new backup.prev_xxxxxxxx_xxxxxx (with data and
> > clock time) is created. These are small files so their number is not a
> > problem. In any case when you exit CinGG the various backups are
> > deleted except for the last 50, which will still be available at the
> > next restart. The new option is put in Settings --> Preferences -->
> > Appearance Tab under the Dangerous section because if you have a crash
> > or anyway you don't exit CinGG correctly, the delete phase doesn't
> > happen and the risk is the increase of the backup files inside .bcast5
> > but, as said, their size is very small and so not a big problem.
> > With this option enabled, how does File --> save/load backup work?
> > Is there anything I didn't understand? Is there anything to add?
> >
> >
> >
> > There are a few parts where save_backup() is called (Reuss Andràs):
> >
> > cinelerra/cwindowgui.C:2
> > cinelerra/swindow.C:1
> > cinelerra/keyframepopup.C:2
> > cinelerra/pluginpopup.C:1
> > cinelerra/mwindowedit.C:87
> > cinelerra/presetsgui.C.sav1:1
> > cinelerra/assetpopup.C:1
> > cinelerra/cwindowtool.C:1
> > cinelerra/render.C:1
> > cinelerra/setformat.C:1
> > cinelerra/mwindow.C:9
> > cinelerra/keyframegui.C:2
> > cinelerra/mwindowgui.C:1
> > cinelerra/mainmenu.C:1
> > cinelerra/loadfile.C:2
> > cinelerra/savefile.C:2
> > cinelerra/menueffects.C:1
> > cinelerra/main.C:1
> > cinelerra/presetsgui.C.sav:1
> > cinelerra/record.C:1
> > cinelerra/plugindialog.C:1
> > --
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> >
>