We are evaluating data.table version 1.9.3 to benefit from a number of bug fixes. But one significant change for us is the new feature 5 in the changelog:

"X[Y] now names non-join columns from i (...) with an i. prefix (...)"

The new naming scheme implies a substantial number of changes in our code. Can this feature be considered "stable", i.e. can we already migrate our code? Or is there the possibility that the naming scheme might change again until the release of 1.9.4?

Thanks,
Christian
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