| daniel added a comment. |
I'm not sure the transitional format is useful. What client would use it, and what for? A client that wants to process the transitional format would need to implement handling for two different XML structures, and actually use both in parallel. A client that still relies on the old format doesn't benefit from the new tags begin present.
I see two ways for fully backwards compatible transition:
- duplicate the contents of the main slot, using the old and the new format.
- generate old-style and new-style dumps in parallel.
But both are probably impractical, because they need too much space.
So, in practice, I suggest to make a hard breaking change immediately, forcing clients that want to process new dumps to use the new structure. This could be made easier though, see my next comment.
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