Save Undo/Redo History (integrate Revision control system)

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Please make sure to try out the latest version of Inkscape
before requesting new features as Inkscape is improving all
the time and the feature requested may already be available.

Rather than trying to build a revision control system into
Inkscape you probably need to commit your files into an
external revision control system such as CVS or Subversion.
 Even a more document management system running over WebDAV
would probably be a good idea (this is roughly what Adobe
Illustrator provides)

> a very good one, btw - how many operations does it remember?)

as much as the computer memory will allow
i expect your system would warn you about a shortage of
memory if there was a problem.

I've added "(integrate Revision control system)" to the
summary as it is really the best way to achieve the end
result you want without reinventing the wheel and creating
huge amounts of extra work for inksape developers.

The roadmap includes WebDAV support for Milestone 11 and
although it might not happen as soon as planned it should be
reassuring for to know the developers are thinking of
solving the problems you bring up.

http://wiki.inkscape.org/wiki/index.php/Roadmap#Milestone_11_-_Import.2FExport_Feature_Enhancements_-_Inkscape_0.45

hm WebDAV support is actually in the Milestone 14 now.

Some interesting implementation ideas from duplicate Bug #1158237:

"It would be nice if in addition to the History we could have the ability to define "versions" perhaps implemented as Checkpoints/Snapshots of the History stack. At checkpointing time the file is branched or copied as a separate file in the filesystem with appropriate naming/tagging to be able to process it later as a "version" of the original rather than an unrelated file. Another idea is to define a new file format which is an archive of all the versions together. Inkscape should load this extracting the latest version, and all versions could be exposed either via the History pane or a new Version Manager component. IMHO, this shouldn't be too complicated to implement and would perhaps be a good candidate for GSOC."